From 45436bc48869b06ec96a274e3d611b3fc1763a2f Mon Sep 17 00:00:00 2001
From: Abdus Fauzi <cola.sced@gmail.com>
Date: Sun, 31 Mar 2024 15:28:13 +0800
Subject: [PATCH 1/2] Update class-purger.php

Introduce a hook "nginx_helper_unlink_recursive" to run a function "run_cron_unlink_recursive()" which will run the "unlink_recursive()" function and delete all directory
---
 admin/class-purger.php | 738 ++++++++++++++++++++---------------------
 1 file changed, 366 insertions(+), 372 deletions(-)

diff --git a/admin/class-purger.php b/admin/class-purger.php
index ee07019..329ca58 100644
--- a/admin/class-purger.php
+++ b/admin/class-purger.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * The admin-specific functionality of the plugin.
  *
@@ -14,7 +15,13 @@
  *
  * @author     rtCamp
  */
-abstract class Purger {
+abstract class Purger
+{
+
+	public function __construct()
+	{
+		add_action('nginx_helper_unlink_recursive', [$this, 'run_cron_unlink_recursive'], 10, 2);
+	}
 
 	/**
 	 * Purge cache for url.
@@ -24,7 +31,7 @@ abstract class Purger {
 	 *
 	 * @return mixed
 	 */
-	abstract public function purge_url( $url, $feed = true );
+	abstract public function purge_url($url, $feed = true);
 
 	/**
 	 * Purge cache for custom url.
@@ -46,27 +53,27 @@ abstract public function purge_all();
 	 * @param int    $comment_id Comment id.
 	 * @param object $comment Comment data.
 	 */
-	public function purge_post_on_comment( $comment_id, $comment ) {
+	public function purge_post_on_comment($comment_id, $comment)
+	{
 
 		$oldstatus = '';
 		$approved  = $comment->comment_approved;
 
-		if ( null === $approved ) {
+		if (null === $approved) {
 			$newstatus = false;
-		} elseif ( '1' === $approved ) {
+		} elseif ('1' === $approved) {
 			$newstatus = 'approved';
-		} elseif ( '0' === $approved ) {
+		} elseif ('0' === $approved) {
 			$newstatus = 'unapproved';
-		} elseif ( 'spam' === $approved ) {
+		} elseif ('spam' === $approved) {
 			$newstatus = 'spam';
-		} elseif ( 'trash' === $approved ) {
+		} elseif ('trash' === $approved) {
 			$newstatus = 'trash';
 		} else {
 			$newstatus = false;
 		}
 
-		$this->purge_post_on_comment_change( $newstatus, $oldstatus, $comment );
-
+		$this->purge_post_on_comment_change($newstatus, $oldstatus, $comment);
 	}
 
 	/**
@@ -76,49 +83,46 @@ public function purge_post_on_comment( $comment_id, $comment ) {
 	 * @param string $oldstatus Old status.
 	 * @param object $comment Comment data.
 	 */
-	public function purge_post_on_comment_change( $newstatus, $oldstatus, $comment ) {
+	public function purge_post_on_comment_change($newstatus, $oldstatus, $comment)
+	{
 
 		global $nginx_helper_admin, $blog_id;
 
-		if ( ! $nginx_helper_admin->options['enable_purge'] ) {
+		if (!$nginx_helper_admin->options['enable_purge']) {
 			return;
 		}
 
 		$_post_id    = $comment->comment_post_ID;
 		$_comment_id = $comment->comment_ID;
 
-		$this->log( '* * * * *' );
-		$this->log( '* Blog :: ' . addslashes( get_bloginfo( 'name' ) ) . ' ( ' . $blog_id . ' ). ' );
-		$this->log( '* Post :: ' . get_the_title( $_post_id ) . ' ( ' . $_post_id . ' ) ' );
-		$this->log( "* Comment :: $_comment_id." );
-		$this->log( "* Status Changed from $oldstatus to $newstatus" );
+		$this->log('* * * * *');
+		$this->log('* Blog :: ' . addslashes(get_bloginfo('name')) . ' ( ' . $blog_id . ' ). ');
+		$this->log('* Post :: ' . get_the_title($_post_id) . ' ( ' . $_post_id . ' ) ');
+		$this->log("* Comment :: $_comment_id.");
+		$this->log("* Status Changed from $oldstatus to $newstatus");
 
-		switch ( $newstatus ) {
+		switch ($newstatus) {
 
 			case 'approved':
-				if ( 1 === (int) $nginx_helper_admin->options['purge_page_on_new_comment'] ) {
-
-					$this->log( '* Comment ( ' . $_comment_id . ' ) approved. Post ( ' . $_post_id . ' ) purging...' );
-					$this->log( '* * * * *' );
-					$this->purge_post( $_post_id );
+				if (1 === (int) $nginx_helper_admin->options['purge_page_on_new_comment']) {
 
+					$this->log('* Comment ( ' . $_comment_id . ' ) approved. Post ( ' . $_post_id . ' ) purging...');
+					$this->log('* * * * *');
+					$this->purge_post($_post_id);
 				}
 				break;
 
 			case 'spam':
 			case 'unapproved':
 			case 'trash':
-				if ( 'approved' === $oldstatus && 1 === (int) $nginx_helper_admin->options['purge_page_on_deleted_comment'] ) {
-
-					$this->log( '* Comment ( ' . $_comment_id . ' ) removed as ( ' . $newstatus . ' ). Post ( ' . $_post_id . ' ) purging...' );
-					$this->log( '* * * * *' );
-					$this->purge_post( $_post_id );
+				if ('approved' === $oldstatus && 1 === (int) $nginx_helper_admin->options['purge_page_on_deleted_comment']) {
 
+					$this->log('* Comment ( ' . $_comment_id . ' ) removed as ( ' . $newstatus . ' ). Post ( ' . $_post_id . ' ) purging...');
+					$this->log('* * * * *');
+					$this->purge_post($_post_id);
 				}
 				break;
-
 		}
-
 	}
 
 	/**
@@ -126,30 +130,31 @@ public function purge_post_on_comment_change( $newstatus, $oldstatus, $comment )
 	 *
 	 * @param int $post_id Post id.
 	 */
-	public function purge_post( $post_id ) {
+	public function purge_post($post_id)
+	{
 
 		global $nginx_helper_admin, $blog_id;
 
-		if ( ! $nginx_helper_admin->options['enable_purge'] ) {
+		if (!$nginx_helper_admin->options['enable_purge']) {
 			return;
 		}
 
-		switch ( current_filter() ) {
+		switch (current_filter()) {
 
 			case 'publish_post':
-				$this->log( '* * * * *' );
-				$this->log( '* Blog :: ' . addslashes( get_bloginfo( 'name' ) ) . ' ( ' . $blog_id . ' ).' );
-				$this->log( '* Post :: ' . get_the_title( $post_id ) . ' ( ' . $post_id . ' ).' );
-				$this->log( '* Post ( ' . $post_id . ' ) published or edited and its status is published' );
-				$this->log( '* * * * *' );
+				$this->log('* * * * *');
+				$this->log('* Blog :: ' . addslashes(get_bloginfo('name')) . ' ( ' . $blog_id . ' ).');
+				$this->log('* Post :: ' . get_the_title($post_id) . ' ( ' . $post_id . ' ).');
+				$this->log('* Post ( ' . $post_id . ' ) published or edited and its status is published');
+				$this->log('* * * * *');
 				break;
 
 			case 'publish_page':
-				$this->log( '* * * * *' );
-				$this->log( '* Blog :: ' . addslashes( get_bloginfo( 'name' ) ) . ' ( ' . $blog_id . ' ).' );
-				$this->log( '* Page :: ' . get_the_title( $post_id ) . ' ( ' . $post_id . ' ).' );
-				$this->log( '* Page ( ' . $post_id . ' ) published or edited and its status is published' );
-				$this->log( '* * * * *' );
+				$this->log('* * * * *');
+				$this->log('* Blog :: ' . addslashes(get_bloginfo('name')) . ' ( ' . $blog_id . ' ).');
+				$this->log('* Page :: ' . get_the_title($post_id) . ' ( ' . $post_id . ' ).');
+				$this->log('* Page ( ' . $post_id . ' ) published or edited and its status is published');
+				$this->log('* * * * *');
 				break;
 
 			case 'comment_post':
@@ -157,23 +162,22 @@ public function purge_post( $post_id ) {
 				break;
 
 			default:
-				$_post_type = get_post_type( $post_id );
-				$this->log( '* * * * *' );
-				$this->log( '* Blog :: ' . addslashes( get_bloginfo( 'name' ) ) . ' ( ' . $blog_id . ' ).' );
-				$this->log( "* Custom post type '" . $_post_type . "' :: " . get_the_title( $post_id ) . ' ( ' . $post_id . ' ).' );
-				$this->log( "* CPT '" . $_post_type . "' ( " . $post_id . ' ) published or edited and its status is published' );
-				$this->log( '* * * * *' );
+				$_post_type = get_post_type($post_id);
+				$this->log('* * * * *');
+				$this->log('* Blog :: ' . addslashes(get_bloginfo('name')) . ' ( ' . $blog_id . ' ).');
+				$this->log("* Custom post type '" . $_post_type . "' :: " . get_the_title($post_id) . ' ( ' . $post_id . ' ).');
+				$this->log("* CPT '" . $_post_type . "' ( " . $post_id . ' ) published or edited and its status is published');
+				$this->log('* * * * *');
 				break;
-
 		}
 
-		$this->log( 'Function purge_post BEGIN ===' );
+		$this->log('Function purge_post BEGIN ===');
 
-		if ( 1 === (int) $nginx_helper_admin->options['purge_homepage_on_edit'] ) {
+		if (1 === (int) $nginx_helper_admin->options['purge_homepage_on_edit']) {
 			$this->_purge_homepage();
 		}
 
-		if ( 'comment_post' === current_filter() || 'wp_set_comment_status' === current_filter() ) {
+		if ('comment_post' === current_filter() || 'wp_set_comment_status' === current_filter()) {
 
 			$this->_purge_by_options(
 				$post_id,
@@ -182,7 +186,6 @@ public function purge_post( $post_id ) {
 				$nginx_helper_admin->options['purge_archive_on_new_comment'],
 				$nginx_helper_admin->options['purge_archive_on_new_comment']
 			);
-
 		} else {
 
 			$this->_purge_by_options(
@@ -192,12 +195,11 @@ public function purge_post( $post_id ) {
 				$nginx_helper_admin->options['purge_archive_on_edit'],
 				$nginx_helper_admin->options['purge_archive_on_edit']
 			);
-
 		}
 
 		$this->custom_purge_urls();
 
-		$this->log( 'Function purge_post END ^^^' );
+		$this->log('Function purge_post END ^^^');
 	}
 
 	/**
@@ -209,124 +211,120 @@ public function purge_post( $post_id ) {
 	 * @param bool $_purge_archive Purge archive or not.
 	 * @param bool $_purge_custom_taxa Purge taxonomy or not.
 	 */
-	private function _purge_by_options( $post_id, $blog_id, $_purge_page, $_purge_archive, $_purge_custom_taxa ) {
+	private function _purge_by_options($post_id, $blog_id, $_purge_page, $_purge_archive, $_purge_custom_taxa)
+	{
 
-		$_post_type = get_post_type( $post_id );
+		$_post_type = get_post_type($post_id);
 
-		if ( $_purge_page ) {
+		if ($_purge_page) {
 
-			if ( 'post' === $_post_type || 'page' === $_post_type ) {
-				$this->log( 'Purging ' . $_post_type . ' ( id ' . $post_id . ', blog id ' . $blog_id . ' ) ' );
+			if ('post' === $_post_type || 'page' === $_post_type) {
+				$this->log('Purging ' . $_post_type . ' ( id ' . $post_id . ', blog id ' . $blog_id . ' ) ');
 			} else {
-				$this->log( "Purging custom post type '" . $_post_type . "' ( id " . $post_id . ', blog id ' . $blog_id . ' )' );
+				$this->log("Purging custom post type '" . $_post_type . "' ( id " . $post_id . ', blog id ' . $blog_id . ' )');
 			}
 
-			$post_status = get_post_status( $post_id );
+			$post_status = get_post_status($post_id);
 
-			if ( 'publish' !== $post_status ) {
+			if ('publish' !== $post_status) {
 
-				if ( ! function_exists( 'get_sample_permalink' ) ) {
+				if (!function_exists('get_sample_permalink')) {
 					require_once ABSPATH . '/wp-admin/includes/post.php';
 				}
 
-				$url = get_sample_permalink( $post_id );
+				$url = get_sample_permalink($post_id);
 
-				if ( ! empty( $url[0] ) && ! empty( $url[1] ) ) {
-					$url = str_replace( array('%postname%', '%pagename%'), $url[1], $url[0] );
+				if (!empty($url[0]) && !empty($url[1])) {
+					$url = str_replace(array('%postname%', '%pagename%'), $url[1], $url[0]);
 				} else {
 					$url = '';
 				}
 			} else {
-				$url = get_permalink( $post_id );
+				$url = get_permalink($post_id);
 			}
 
-			if ( empty( $url ) && ! is_array( $url ) ) {
+			if (empty($url) && !is_array($url)) {
 				return;
 			}
 
-			if ( 'trash' === get_post_status( $post_id ) ) {
-				$url = str_replace( '__trashed', '', $url );
+			if ('trash' === get_post_status($post_id)) {
+				$url = str_replace('__trashed', '', $url);
 			}
 
-			$this->purge_url( $url );
-
+			$this->purge_url($url);
 		}
 
-		if ( $_purge_archive ) {
+		if ($_purge_archive) {
 
-			$_post_type_archive_link = get_post_type_archive_link( $_post_type );
+			$_post_type_archive_link = get_post_type_archive_link($_post_type);
 
-			if ( function_exists( 'get_post_type_archive_link' ) && $_post_type_archive_link ) {
-
-				$this->log( 'Purging post type archive ( ' . $_post_type . ' )' );
-				$this->purge_url( $_post_type_archive_link );
+			if (function_exists('get_post_type_archive_link') && $_post_type_archive_link) {
 
+				$this->log('Purging post type archive ( ' . $_post_type . ' )');
+				$this->purge_url($_post_type_archive_link);
 			}
 
-			$post_types = get_post_types( array( 'public' => true ) );
+			$post_types = get_post_types(array('public' => true));
 
-			if ( in_array( $_post_type, $post_types, true ) ) {
+			if (in_array($_post_type, $post_types, true)) {
 
-				$this->log( 'Purging date' );
+				$this->log('Purging date');
 
-				$day   = get_the_time( 'd', $post_id );
-				$month = get_the_time( 'm', $post_id );
-				$year  = get_the_time( 'Y', $post_id );
+				$day   = get_the_time('d', $post_id);
+				$month = get_the_time('m', $post_id);
+				$year  = get_the_time('Y', $post_id);
 
-				if ( $year ) {
+				if ($year) {
 
-					$this->purge_url( get_year_link( $year ) );
+					$this->purge_url(get_year_link($year));
 
-					if ( $month ) {
+					if ($month) {
 
-						$this->purge_url( get_month_link( $year, $month ) );
+						$this->purge_url(get_month_link($year, $month));
 
-						if ( $day ) {
-							$this->purge_url( get_day_link( $year, $month, $day ) );
+						if ($day) {
+							$this->purge_url(get_day_link($year, $month, $day));
 						}
 					}
 				}
 			}
 
-			$categories = wp_get_post_categories( $post_id );
-
-			if ( ! is_wp_error( $categories ) ) {
+			$categories = wp_get_post_categories($post_id);
 
-				$this->log( 'Purging category archives' );
+			if (!is_wp_error($categories)) {
 
-				foreach ( $categories as $category_id ) {
+				$this->log('Purging category archives');
 
-					$this->log( 'Purging category ' . $category_id );
-					$this->purge_url( get_category_link( $category_id ) );
+				foreach ($categories as $category_id) {
 
+					$this->log('Purging category ' . $category_id);
+					$this->purge_url(get_category_link($category_id));
 				}
 			}
 
-			$tags = get_the_tags( $post_id );
+			$tags = get_the_tags($post_id);
 
-			if ( ! is_wp_error( $tags ) && ! empty( $tags ) ) {
+			if (!is_wp_error($tags) && !empty($tags)) {
 
-				$this->log( 'Purging tag archives' );
+				$this->log('Purging tag archives');
 
-				foreach ( $tags as $tag ) {
-
-					$this->log( 'Purging tag ' . $tag->term_id );
-					$this->purge_url( get_tag_link( $tag->term_id ) );
+				foreach ($tags as $tag) {
 
+					$this->log('Purging tag ' . $tag->term_id);
+					$this->purge_url(get_tag_link($tag->term_id));
 				}
 			}
 
-			$author_id = get_post( $post_id )->post_author;
-
-			if ( ! empty( $author_id ) ) {
+			$author_id = get_post($post_id)->post_author;
 
-				$this->log( 'Purging author archive' );
-				$this->purge_url( get_author_posts_url( $author_id ) );
+			if (!empty($author_id)) {
 
+				$this->log('Purging author archive');
+				$this->purge_url(get_author_posts_url($author_id));
 			}
 		}
 
-		if ( $_purge_custom_taxa ) {
+		if ($_purge_custom_taxa) {
 
 			$custom_taxonomies = get_taxonomies(
 				array(
@@ -335,24 +333,24 @@ private function _purge_by_options( $post_id, $blog_id, $_purge_page, $_purge_ar
 				)
 			);
 
-			if ( ! empty( $custom_taxonomies ) ) {
+			if (!empty($custom_taxonomies)) {
 
-				$this->log( 'Purging custom taxonomies related' );
+				$this->log('Purging custom taxonomies related');
 
-				foreach ( $custom_taxonomies as $taxon ) {
+				foreach ($custom_taxonomies as $taxon) {
 
-					if ( ! in_array( $taxon, array( 'category', 'post_tag', 'link_category' ), true ) ) {
+					if (!in_array($taxon, array('category', 'post_tag', 'link_category'), true)) {
 
-						$terms = get_the_terms( $post_id, $taxon );
+						$terms = get_the_terms($post_id, $taxon);
 
-						if ( ! is_wp_error( $terms ) && ! empty( $terms ) ) {
+						if (!is_wp_error($terms) && !empty($terms)) {
 
-							foreach ( $terms as $term ) {
-								$this->purge_url( get_term_link( $term, $taxon ) );
+							foreach ($terms as $term) {
+								$this->purge_url(get_term_link($term, $taxon));
 							}
 						}
 					} else {
-						$this->log( "Your built-in taxonomy '" . $taxon . "' has param '_builtin' set to false.", 'WARNING' );
+						$this->log("Your built-in taxonomy '" . $taxon . "' has param '_builtin' set to false.", 'WARNING');
 					}
 				}
 			}
@@ -369,35 +367,34 @@ private function _purge_by_options( $post_id, $blog_id, $_purge_page, $_purge_ar
 	 *
 	 * @return bool
 	 */
-	protected function delete_cache_file_for( $url ) {
+	protected function delete_cache_file_for($url)
+	{
 
 		// Verify cache path is set.
-		if ( ! defined( 'RT_WP_NGINX_HELPER_CACHE_PATH' ) ) {
+		if (!defined('RT_WP_NGINX_HELPER_CACHE_PATH')) {
 
-			$this->log( 'Error purging because RT_WP_NGINX_HELPER_CACHE_PATH was not defined. URL: ' . $url, 'ERROR' );
+			$this->log('Error purging because RT_WP_NGINX_HELPER_CACHE_PATH was not defined. URL: ' . $url, 'ERROR');
 			return false;
-
 		}
 
 		// Verify URL is valid.
-		$url_data = wp_parse_url( $url );
-		if ( ! $url_data ) {
+		$url_data = wp_parse_url($url);
+		if (!$url_data) {
 
-			$this->log( 'Error purging because specified URL did not appear to be valid. URL: ' . $url, 'ERROR' );
+			$this->log('Error purging because specified URL did not appear to be valid. URL: ' . $url, 'ERROR');
 			return false;
-
 		}
 
 		// Build a hash of the URL.
-		$url_path = isset( $url_data['path'] ) ? $url_data['path'] : '';
-		$hash = md5( $url_data['scheme'] . 'GET' . $url_data['host'] . $url_path );
+		$url_path = isset($url_data['path']) ? $url_data['path'] : '';
+		$hash = md5($url_data['scheme'] . 'GET' . $url_data['host'] . $url_path);
 
 		// Ensure trailing slash.
 		$cache_path = RT_WP_NGINX_HELPER_CACHE_PATH;
-		$cache_path = ( '/' === substr( $cache_path, -1 ) ) ? $cache_path : $cache_path . '/';
+		$cache_path = ('/' === substr($cache_path, -1)) ? $cache_path : $cache_path . '/';
 
 		// Set path to cached file.
-		$cached_file = $cache_path . substr( $hash, -1 ) . '/' . substr( $hash, -3, 2 ) . '/' . $hash;
+		$cached_file = $cache_path . substr($hash, -1) . '/' . substr($hash, -3, 2) . '/' . $hash;
 
 		/**
 		 * Filters the cached file name.
@@ -408,19 +405,18 @@ protected function delete_cache_file_for( $url ) {
 		 * @param string $cached_file Cached file name.
 		 * @param string $url         URL to be purged.
 		 */
-		$cached_file = apply_filters( 'rt_nginx_helper_purge_cached_file', $cached_file, $url );
+		$cached_file = apply_filters('rt_nginx_helper_purge_cached_file', $cached_file, $url);
 
 		// Verify cached file exists.
-		if ( ! file_exists( $cached_file ) ) {
+		if (!file_exists($cached_file)) {
 
-			$this->log( '- - ' . $url . ' is currently not cached ( checked for file: ' . $cached_file . ' )' );
+			$this->log('- - ' . $url . ' is currently not cached ( checked for file: ' . $cached_file . ' )');
 			return false;
-
 		}
 
 		// Delete the cached file.
-		if ( unlink( $cached_file ) ) {
-			$this->log( '- - ' . $url . ' *** PURGED ***' );
+		if (unlink($cached_file)) {
+			$this->log('- - ' . $url . ' *** PURGED ***');
 
 			/**
 			 * Fire an action after deleting file from cache.
@@ -430,11 +426,10 @@ protected function delete_cache_file_for( $url ) {
 			 * @param string $url         URL to be purged.
 			 * @param string $cached_file Cached file name.
 			 */
-			do_action( 'rt_nginx_helper_purged_file', $url, $cached_file );
+			do_action('rt_nginx_helper_purged_file', $url, $cached_file);
 		} else {
-			$this->log( '- - An error occurred deleting the cache file. Check the server logs for a PHP warning.', 'ERROR' );
+			$this->log('- - An error occurred deleting the cache file. Check the server logs for a PHP warning.', 'ERROR');
 		}
-
 	}
 
 	/**
@@ -442,7 +437,8 @@ protected function delete_cache_file_for( $url ) {
 	 *
 	 * @param string $url URL to do remote request.
 	 */
-	protected function do_remote_get( $url ) {
+	protected function do_remote_get($url)
+	{
 		/**
 		 * Filters the URL to be purged.
 		 *
@@ -450,7 +446,7 @@ protected function do_remote_get( $url ) {
 		 *
 		 * @param string $url URL to be purged.
 		 */
-		$url = apply_filters( 'rt_nginx_helper_remote_purge_url', $url );
+		$url = apply_filters('rt_nginx_helper_remote_purge_url', $url);
 
 		/**
 		 * Fire an action before purging URL.
@@ -459,30 +455,28 @@ protected function do_remote_get( $url ) {
 		 *
 		 * @param string $url URL to be purged.
 		 */
-		do_action( 'rt_nginx_helper_before_remote_purge_url', $url );
+		do_action('rt_nginx_helper_before_remote_purge_url', $url);
 
-		$response = wp_remote_get( $url );
+		$response = wp_remote_get($url);
 
-		if ( is_wp_error( $response ) ) {
-
-			$_errors_str = implode( ' - ', $response->get_error_messages() );
-			$this->log( 'Error while purging URL. ' . $_errors_str, 'ERROR' );
+		if (is_wp_error($response)) {
 
+			$_errors_str = implode(' - ', $response->get_error_messages());
+			$this->log('Error while purging URL. ' . $_errors_str, 'ERROR');
 		} else {
 
-			if ( $response['response']['code'] ) {
+			if ($response['response']['code']) {
 
-				switch ( $response['response']['code'] ) {
+				switch ($response['response']['code']) {
 
 					case 200:
-						$this->log( '- - ' . $url . ' *** PURGED ***' );
+						$this->log('- - ' . $url . ' *** PURGED ***');
 						break;
 					case 404:
-						$this->log( '- - ' . $url . ' is currently not cached' );
+						$this->log('- - ' . $url . ' is currently not cached');
 						break;
 					default:
-						$this->log( '- - ' . $url . ' not found ( ' . $response['response']['code'] . ' )', 'WARNING' );
-
+						$this->log('- - ' . $url . ' not found ( ' . $response['response']['code'] . ' )', 'WARNING');
 				}
 			}
 
@@ -494,9 +488,8 @@ protected function do_remote_get( $url ) {
 			 * @param string $url      URL to be purged.
 			 * @param array  $response Array of results including HTTP headers.
 			 */
-			do_action( 'rt_nginx_helper_after_remote_purge_url', $url, $response );
+			do_action('rt_nginx_helper_after_remote_purge_url', $url, $response);
 		}
-
 	}
 
 	/**
@@ -504,17 +497,17 @@ protected function do_remote_get( $url ) {
 	 *
 	 * @return string
 	 */
-	public function check_http_connection() {
+	public function check_http_connection()
+	{
 
-		$purge_url = plugins_url( 'nginx-manager/check-proxy.php' );
-		$response  = wp_remote_get( $purge_url );
+		$purge_url = plugins_url('nginx-manager/check-proxy.php');
+		$response  = wp_remote_get($purge_url);
 
-		if ( ! is_wp_error( $response ) && ( 'HTTP Connection OK' === $response['body'] ) ) {
+		if (!is_wp_error($response) && ('HTTP Connection OK' === $response['body'])) {
 			return 'OK';
 		}
 
 		return 'KO';
-
 	}
 
 	/**
@@ -525,11 +518,12 @@ public function check_http_connection() {
 	 *
 	 * @return bool|void
 	 */
-	public function log( $msg, $level = 'INFO' ) {
+	public function log($msg, $level = 'INFO')
+	{
 
 		global $nginx_helper_admin;
 
-		if ( ! $nginx_helper_admin->is_nginx_log_enabled() ) {
+		if (!$nginx_helper_admin->is_nginx_log_enabled()) {
 			return;
 		}
 
@@ -540,53 +534,52 @@ public function log( $msg, $level = 'INFO' ) {
 			'NONE'    => 3,
 		);
 
-		if ( $log_levels[ $level ] >= $log_levels[ $nginx_helper_admin->options['log_level'] ] ) {
+		if ($log_levels[$level] >= $log_levels[$nginx_helper_admin->options['log_level']]) {
 
-			$fp = fopen( $nginx_helper_admin->functional_asset_path() . 'nginx.log', 'a+' );
-			if ( $fp ) {
-
-				fwrite( $fp, "\n" . gmdate( 'Y-m-d H:i:s ' ) . ' | ' . $level . ' | ' . $msg );
-				fclose( $fp );
+			$fp = fopen($nginx_helper_admin->functional_asset_path() . 'nginx.log', 'a+');
+			if ($fp) {
 
+				fwrite($fp, "\n" . gmdate('Y-m-d H:i:s ') . ' | ' . $level . ' | ' . $msg);
+				fclose($fp);
 			}
 		}
 
 		return true;
-
 	}
 
 	/**
 	 * Check and truncate log file.
 	 */
-	public function check_and_truncate_log_file() {
+	public function check_and_truncate_log_file()
+	{
 
 		global $nginx_helper_admin;
 
-		if ( ! $nginx_helper_admin->is_nginx_log_enabled() ) {
+		if (!$nginx_helper_admin->is_nginx_log_enabled()) {
 			return;
 		}
 
 		$nginx_asset_path = $nginx_helper_admin->functional_asset_path() . 'nginx.log';
 
-		if ( ! file_exists( $nginx_asset_path ) ) {
+		if (!file_exists($nginx_asset_path)) {
 			return;
 		}
 
-		$max_size_allowed = ( is_numeric( $nginx_helper_admin->options['log_filesize'] ) ) ? $nginx_helper_admin->options['log_filesize'] * 1048576 : 5242880;
+		$max_size_allowed = (is_numeric($nginx_helper_admin->options['log_filesize'])) ? $nginx_helper_admin->options['log_filesize'] * 1048576 : 5242880;
 
-		$file_size = filesize( $nginx_asset_path );
+		$file_size = filesize($nginx_asset_path);
 
-		if ( $file_size > $max_size_allowed ) {
+		if ($file_size > $max_size_allowed) {
 
 			$offset       = $file_size - $max_size_allowed;
-			$file_content = file_get_contents( $nginx_asset_path, null, null, $offset );
-			$file_content = empty( $file_content ) ? '' : strstr( $file_content, "\n" );
+			$file_content = file_get_contents($nginx_asset_path, false, null, $offset);
+			$file_content = empty($file_content) ? '' : strstr($file_content, "\n");
 
-			$fp = fopen( $nginx_asset_path, 'w+' );
-			if ( $file_content && $fp ) {
+			$fp = fopen($nginx_asset_path, 'w+');
+			if ($file_content && $fp) {
 
-				fwrite( $fp, $file_content );
-				fclose( $fp );
+				fwrite($fp, $file_content);
+				fclose($fp);
 			}
 		}
 	}
@@ -596,42 +589,41 @@ public function check_and_truncate_log_file() {
 	 *
 	 * @param int $attachment_id Attachment id.
 	 */
-	public function purge_image_on_edit( $attachment_id ) {
+	public function purge_image_on_edit($attachment_id)
+	{
 
 		global $nginx_helper_admin;
 
 		// Do not purge if not enabled.
-		if ( ! $nginx_helper_admin->options['enable_purge'] ) {
+		if (!$nginx_helper_admin->options['enable_purge']) {
 			return;
 		}
 
-		$this->log( 'Purging media on edit BEGIN ===' );
+		$this->log('Purging media on edit BEGIN ===');
 
-		if ( wp_attachment_is_image( $attachment_id ) ) {
+		if (wp_attachment_is_image($attachment_id)) {
 
-			$this->purge_url( wp_get_attachment_url( $attachment_id ), false );
-			$attachment = wp_get_attachment_metadata( $attachment_id );
+			$this->purge_url(wp_get_attachment_url($attachment_id), false);
+			$attachment = wp_get_attachment_metadata($attachment_id);
 
-			if ( ! empty( $attachment['sizes'] ) && is_array( $attachment['sizes'] ) ) {
+			if (!empty($attachment['sizes']) && is_array($attachment['sizes'])) {
 
-				foreach ( array_keys( $attachment['sizes'] ) as $size_name ) {
+				foreach (array_keys($attachment['sizes']) as $size_name) {
 
-					$resize_image = wp_get_attachment_image_src( $attachment_id, $size_name );
+					$resize_image = wp_get_attachment_image_src($attachment_id, $size_name);
 
-					if ( $resize_image ) {
-						$this->purge_url( $resize_image[0], false );
+					if ($resize_image) {
+						$this->purge_url($resize_image[0], false);
 					}
 				}
 			}
 
-			$this->purge_url( get_attachment_link( $attachment_id ) );
-
+			$this->purge_url(get_attachment_link($attachment_id));
 		} else {
-			$this->log( 'Media ( id ' . $attachment_id . ') edited: no image', 'WARNING' );
+			$this->log('Media ( id ' . $attachment_id . ') edited: no image', 'WARNING');
 		}
 
-		$this->log( 'Purging media on edit END ^^^' );
-
+		$this->log('Purging media on edit END ^^^');
 	}
 
 	/**
@@ -643,22 +635,23 @@ public function purge_image_on_edit( $attachment_id ) {
 	 *
 	 * @return bool|void
 	 */
-	public function purge_on_post_moved_to_trash( $new_status, $old_status, $post ) {
+	public function purge_on_post_moved_to_trash($new_status, $old_status, $post)
+	{
 
 		global $nginx_helper_admin, $blog_id;
 
-		if ( ! $nginx_helper_admin->options['enable_purge'] ) {
+		if (!$nginx_helper_admin->options['enable_purge']) {
 			return;
 		}
 
-		if ( 'trash' === $new_status ) {
+		if ('trash' === $new_status) {
 
-			$this->log( '# # # # #' );
-			$this->log( "# Post '$post->post_title' (  id " . $post->ID . ' ) moved to the trash.' );
-			$this->log( '# # # # #' );
-			$this->log( 'Function purge_on_post_moved_to_trash ( post id ' . $post->ID . ' ) BEGIN ===' );
+			$this->log('# # # # #');
+			$this->log("# Post '$post->post_title' (  id " . $post->ID . ' ) moved to the trash.');
+			$this->log('# # # # #');
+			$this->log('Function purge_on_post_moved_to_trash ( post id ' . $post->ID . ' ) BEGIN ===');
 
-			if ( 1 === (int) $nginx_helper_admin->options['purge_homepage_on_del'] ) {
+			if (1 === (int) $nginx_helper_admin->options['purge_homepage_on_del']) {
 				$this->_purge_homepage();
 			}
 
@@ -670,11 +663,10 @@ public function purge_on_post_moved_to_trash( $new_status, $old_status, $post )
 				$nginx_helper_admin->options['purge_archive_on_del']
 			);
 
-			$this->log( 'Function purge_on_post_moved_to_trash ( post id ' . $post->ID . ' ) END ===' );
+			$this->log('Function purge_on_post_moved_to_trash ( post id ' . $post->ID . ' ) END ===');
 		}
 
 		return true;
-
 	}
 
 	/**
@@ -682,25 +674,23 @@ public function purge_on_post_moved_to_trash( $new_status, $old_status, $post )
 	 *
 	 * @return bool
 	 */
-	private function _purge_homepage() {
+	private function _purge_homepage()
+	{
 
 		// WPML installetd?.
-		if ( function_exists( 'icl_get_home_url' ) ) {
-
-			$homepage_url = trailingslashit( icl_get_home_url() );
-			$this->log( sprintf( __( 'Purging homepage (WPML) ', 'nginx-helper' ) . '%s', $homepage_url ) );
-
+		if (function_exists('icl_get_home_url')) {
+			/** @disregard P1010 */
+			$homepage_url = trailingslashit(icl_get_home_url());
+			$this->log(sprintf(__('Purging homepage (WPML) ', 'nginx-helper') . '%s', $homepage_url));
 		} else {
 
-			$homepage_url = trailingslashit( home_url() );
-			$this->log( sprintf( __( 'Purging homepage ', 'nginx-helper' ) . '%s', $homepage_url ) );
-
+			$homepage_url = trailingslashit(home_url());
+			$this->log(sprintf(__('Purging homepage ', 'nginx-helper') . '%s', $homepage_url));
 		}
 
-		$this->purge_url( $homepage_url );
+		$this->purge_url($homepage_url);
 
 		return true;
-
 	}
 
 	/**
@@ -708,23 +698,23 @@ private function _purge_homepage() {
 	 *
 	 * @return bool
 	 */
-	private function _purge_personal_urls() {
+	private function _purge_personal_urls()
+	{
 
 		global $nginx_helper_admin;
 
-		$this->log( __( 'Purging personal urls', 'nginx-helper' ) );
+		$this->log(__('Purging personal urls', 'nginx-helper'));
 
-		if ( isset( $nginx_helper_admin->options['purgeable_url']['urls'] ) ) {
+		if (isset($nginx_helper_admin->options['purgeable_url']['urls'])) {
 
-			foreach ( $nginx_helper_admin->options['purgeable_url']['urls'] as $url ) {
-				$this->purge_url( $url, false );
+			foreach ($nginx_helper_admin->options['purgeable_url']['urls'] as $url) {
+				$this->purge_url($url, false);
 			}
 		} else {
-			$this->log( '- ' . __( 'No personal urls available', 'nginx-helper' ) );
+			$this->log('- ' . __('No personal urls available', 'nginx-helper'));
 		}
 
 		return true;
-
 	}
 
 	/**
@@ -734,20 +724,20 @@ private function _purge_personal_urls() {
 	 *
 	 * @return bool
 	 */
-	private function _purge_post_categories( $_post_id ) {
+	private function _purge_post_categories($_post_id)
+	{
 
-		$this->log( __( 'Purging category archives', 'nginx-helper' ) );
+		$this->log(__('Purging category archives', 'nginx-helper'));
 
-		$categories = wp_get_post_categories( $_post_id );
+		$categories = wp_get_post_categories($_post_id);
 
-		if ( ! is_wp_error( $categories ) && ! empty( $categories ) ) {
+		if (!is_wp_error($categories) && !empty($categories)) {
 
-			foreach ( $categories as $category_id ) {
+			foreach ($categories as $category_id) {
 
 				// translators: %d: Category ID.
-				$this->log( sprintf( __( "Purging category '%d'", 'nginx-helper' ), $category_id ) );
-				$this->purge_url( get_category_link( $category_id ) );
-
+				$this->log(sprintf(__("Purging category '%d'", 'nginx-helper'), $category_id));
+				$this->purge_url(get_category_link($category_id));
 			}
 		}
 
@@ -761,24 +751,23 @@ private function _purge_post_categories( $_post_id ) {
 	 *
 	 * @return bool
 	 */
-	private function _purge_post_tags( $_post_id ) {
+	private function _purge_post_tags($_post_id)
+	{
 
-		$this->log( __( 'Purging tags archives', 'nginx-helper' ) );
+		$this->log(__('Purging tags archives', 'nginx-helper'));
 
-		$tags = get_the_tags( $_post_id );
+		$tags = get_the_tags($_post_id);
 
-		if ( ! is_wp_error( $tags ) && ! empty( $tags ) ) {
+		if (!is_wp_error($tags) && !empty($tags)) {
 
-			foreach ( $tags as $tag ) {
-
-				$this->log( sprintf( __( "Purging tag '%1\$s' ( id %2\$d )", 'nginx-helper' ), $tag->name, $tag->term_id ) );
-				$this->purge_url( get_tag_link( $tag->term_id ) );
+			foreach ($tags as $tag) {
 
+				$this->log(sprintf(__("Purging tag '%1\$s' ( id %2\$d )", 'nginx-helper'), $tag->name, $tag->term_id));
+				$this->purge_url(get_tag_link($tag->term_id));
 			}
 		}
 
 		return true;
-
 	}
 
 	/**
@@ -788,9 +777,10 @@ private function _purge_post_tags( $_post_id ) {
 	 *
 	 * @return bool
 	 */
-	private function _purge_post_custom_taxa( $_post_id ) {
+	private function _purge_post_custom_taxa($_post_id)
+	{
 
-		$this->log( __( 'Purging post custom taxonomies related', 'nginx-helper' ) );
+		$this->log(__('Purging post custom taxonomies related', 'nginx-helper'));
 
 		$custom_taxonomies = get_taxonomies(
 			array(
@@ -799,30 +789,30 @@ private function _purge_post_custom_taxa( $_post_id ) {
 			)
 		);
 
-		if ( ! empty( $custom_taxonomies ) ) {
+		if (!empty($custom_taxonomies)) {
 
-			foreach ( $custom_taxonomies as $taxon ) {
+			foreach ($custom_taxonomies as $taxon) {
 
 				// translators: %s: Post taxonomy name.
-				$this->log( sprintf( '+ ' . __( "Purging custom taxonomy '%s'", 'nginx-helper' ), $taxon ) );
+				$this->log(sprintf('+ ' . __("Purging custom taxonomy '%s'", 'nginx-helper'), $taxon));
 
-				if ( ! in_array( $taxon, array( 'category', 'post_tag', 'link_category' ), true ) ) {
+				if (!in_array($taxon, array('category', 'post_tag', 'link_category'), true)) {
 
-					$terms = get_the_terms( $_post_id, $taxon );
+					$terms = get_the_terms($_post_id, $taxon);
 
-					if ( ! is_wp_error( $terms ) && ! empty( $terms ) && is_array( $terms ) ) {
+					if (!is_wp_error($terms) && !empty($terms) && is_array($terms)) {
 
-						foreach ( $terms as $term ) {
-							$this->purge_url( get_term_link( $term, $taxon ) );
+						foreach ($terms as $term) {
+							$this->purge_url(get_term_link($term, $taxon));
 						}
 					}
 				} else {
 					// translators: %s: Post taxonomy name.
-					$this->log( sprintf( '- ' . __( "Your built-in taxonomy '%s' has param '_builtin' set to false.", 'nginx-helper' ), $taxon ), 'WARNING' );
+					$this->log(sprintf('- ' . __("Your built-in taxonomy '%s' has param '_builtin' set to false.", 'nginx-helper'), $taxon), 'WARNING');
 				}
 			}
 		} else {
-			$this->log( '- ' . __( 'No custom taxonomies', 'nginx-helper' ) );
+			$this->log('- ' . __('No custom taxonomies', 'nginx-helper'));
 		}
 
 		return true;
@@ -833,24 +823,23 @@ private function _purge_post_custom_taxa( $_post_id ) {
 	 *
 	 * @return bool
 	 */
-	private function _purge_all_categories() {
+	private function _purge_all_categories()
+	{
 
-		$this->log( __( 'Purging all categories', 'nginx-helper' ) );
+		$this->log(__('Purging all categories', 'nginx-helper'));
 
 		$_categories = get_categories();
 
-		if ( ! empty( $_categories ) ) {
+		if (!empty($_categories)) {
 
-			foreach ( $_categories as $c ) {
-
-				$this->log( sprintf( __( "Purging category '%1\$s' ( id %2\$d )", 'nginx-helper' ), $c->name, $c->term_id ) );
-				$this->purge_url( get_category_link( $c->term_id ) );
+			foreach ($_categories as $c) {
 
+				$this->log(sprintf(__("Purging category '%1\$s' ( id %2\$d )", 'nginx-helper'), $c->name, $c->term_id));
+				$this->purge_url(get_category_link($c->term_id));
 			}
 		} else {
 
-			$this->log( __( 'No categories archives', 'nginx-helper' ) );
-
+			$this->log(__('No categories archives', 'nginx-helper'));
 		}
 
 		return true;
@@ -861,26 +850,25 @@ private function _purge_all_categories() {
 	 *
 	 * @return bool
 	 */
-	private function _purge_all_posttags() {
+	private function _purge_all_posttags()
+	{
 
-		$this->log( __( 'Purging all tags', 'nginx-helper' ) );
+		$this->log(__('Purging all tags', 'nginx-helper'));
 
 		$_posttags = get_tags();
 
-		if ( ! empty( $_posttags ) ) {
+		if (!empty($_posttags)) {
 
-			foreach ( $_posttags as $t ) {
-
-				$this->log( sprintf( __( "Purging tag '%1\$s' ( id %2\$d )", 'nginx-helper' ), $t->name, $t->term_id ) );
-				$this->purge_url( get_tag_link( $t->term_id ) );
+			foreach ($_posttags as $t) {
 
+				$this->log(sprintf(__("Purging tag '%1\$s' ( id %2\$d )", 'nginx-helper'), $t->name, $t->term_id));
+				$this->purge_url(get_tag_link($t->term_id));
 			}
 		} else {
-			$this->log( __( 'No tags archives', 'nginx-helper' ) );
+			$this->log(__('No tags archives', 'nginx-helper'));
 		}
 
 		return true;
-
 	}
 
 	/**
@@ -888,9 +876,10 @@ private function _purge_all_posttags() {
 	 *
 	 * @return bool
 	 */
-	private function _purge_all_customtaxa() {
+	private function _purge_all_customtaxa()
+	{
 
-		$this->log( __( 'Purging all custom taxonomies', 'nginx-helper' ) );
+		$this->log(__('Purging all custom taxonomies', 'nginx-helper'));
 
 		$custom_taxonomies = get_taxonomies(
 			array(
@@ -899,32 +888,31 @@ private function _purge_all_customtaxa() {
 			)
 		);
 
-		if ( ! empty( $custom_taxonomies ) ) {
+		if (!empty($custom_taxonomies)) {
 
-			foreach ( $custom_taxonomies as $taxon ) {
+			foreach ($custom_taxonomies as $taxon) {
 
 				// translators: %s: Taxonomy name.
-				$this->log( sprintf( '+ ' . __( "Purging custom taxonomy '%s'", 'nginx-helper' ), $taxon ) );
+				$this->log(sprintf('+ ' . __("Purging custom taxonomy '%s'", 'nginx-helper'), $taxon));
 
-				if ( ! in_array( $taxon, array( 'category', 'post_tag', 'link_category' ), true ) ) {
+				if (!in_array($taxon, array('category', 'post_tag', 'link_category'), true)) {
 
-					$terms = get_terms( $taxon );
+					$terms = get_terms($taxon);
 
-					if ( ! is_wp_error( $terms ) && ! empty( $terms ) ) {
+					if (!is_wp_error($terms) && !empty($terms)) {
 
-						foreach ( $terms as $term ) {
-
-							$this->purge_url( get_term_link( $term, $taxon ) );
+						foreach ($terms as $term) {
 
+							$this->purge_url(get_term_link($term, $taxon));
 						}
 					}
 				} else {
 					// translators: %s: Taxonomy name.
-					$this->log( sprintf( '- ' . esc_html__( "Your built-in taxonomy '%s' has param '_builtin' set to false.", 'nginx-helper' ), $taxon ), 'WARNING' );
+					$this->log(sprintf('- ' . esc_html__("Your built-in taxonomy '%s' has param '_builtin' set to false.", 'nginx-helper'), $taxon), 'WARNING');
 				}
 			}
 		} else {
-			$this->log( '- ' . __( 'No custom taxonomies', 'nginx-helper' ) );
+			$this->log('- ' . __('No custom taxonomies', 'nginx-helper'));
 		}
 
 		return true;
@@ -935,7 +923,8 @@ private function _purge_all_customtaxa() {
 	 *
 	 * @return bool
 	 */
-	private function _purge_all_taxonomies() {
+	private function _purge_all_taxonomies()
+	{
 
 		$this->_purge_all_categories();
 		$this->_purge_all_posttags();
@@ -949,9 +938,10 @@ private function _purge_all_taxonomies() {
 	 *
 	 * @return bool
 	 */
-	private function _purge_all_posts() {
+	private function _purge_all_posts()
+	{
 
-		$this->log( __( 'Purging all posts, pages and custom post types.', 'nginx-helper' ) );
+		$this->log(__('Purging all posts, pages and custom post types.', 'nginx-helper'));
 
 		$args = array(
 			'posts_per_page' => 0,
@@ -960,22 +950,20 @@ private function _purge_all_posts() {
 		);
 
 		$get_posts = new WP_Query();
-		$_posts    = $get_posts->query( $args );
-
-		if ( ! empty( $_posts ) ) {
+		$_posts    = $get_posts->query($args);
 
-			foreach ( $_posts as $p ) {
+		if (!empty($_posts)) {
 
-				$this->log( sprintf( '+ ' . __( "Purging post id '%1\$d' ( post type '%2\$s' )", 'nginx-helper' ), $p->ID, $p->post_type ) );
-				$this->purge_url( get_permalink( $p->ID ) );
+			foreach ($_posts as $p) {
 
+				$this->log(sprintf('+ ' . __("Purging post id '%1\$d' ( post type '%2\$s' )", 'nginx-helper'), $p->ID, $p->post_type));
+				$this->purge_url(get_permalink($p->ID));
 			}
 		} else {
-			$this->log( '- ' . __( 'No posts', 'nginx-helper' ) );
+			$this->log('- ' . __('No posts', 'nginx-helper'));
 		}
 
 		return true;
-
 	}
 
 	/**
@@ -983,26 +971,27 @@ private function _purge_all_posts() {
 	 *
 	 * @return bool
 	 */
-	private function _purge_all_date_archives() {
+	private function _purge_all_date_archives()
+	{
 
-		$this->log( __( 'Purging all date-based archives.', 'nginx-helper' ) );
+		$this->log(__('Purging all date-based archives.', 'nginx-helper'));
 
 		$this->_purge_all_daily_archives();
 		$this->_purge_all_monthly_archives();
 		$this->_purge_all_yearly_archives();
 
 		return true;
-
 	}
 
 	/**
 	 * Purge daily archives cache.
 	 */
-	private function _purge_all_daily_archives() {
+	private function _purge_all_daily_archives()
+	{
 
 		global $wpdb;
 
-		$this->log( __( 'Purging all daily archives.', 'nginx-helper' ) );
+		$this->log(__('Purging all daily archives.', 'nginx-helper'));
 
 		$_query_daily_archives = $wpdb->prepare(
 			"SELECT YEAR(post_date) AS %s, MONTH(post_date) AS %s, DAYOFMONTH(post_date) AS %s, count(ID) as posts
@@ -1017,42 +1006,41 @@ private function _purge_all_daily_archives() {
 			'publish'
 		);
 
-		$_daily_archives = $wpdb->get_results( $_query_daily_archives ); // phpcs:ignore
+		$_daily_archives = $wpdb->get_results($_query_daily_archives); // phpcs:ignore
 
-		if ( ! empty( $_daily_archives ) ) {
+		if (!empty($_daily_archives)) {
 
-			foreach ( $_daily_archives as $_da ) {
+			foreach ($_daily_archives as $_da) {
 
 				$this->log(
 					sprintf(
-						'+ ' . __( "Purging daily archive '%1\$s/%2\$s/%3\$s'", 'nginx-helper' ),
+						'+ ' . __("Purging daily archive '%1\$s/%2\$s/%3\$s'", 'nginx-helper'),
 						$_da->year,
 						$_da->month,
 						$_da->dayofmonth
 					)
 				);
 
-				$this->purge_url( get_day_link( $_da->year, $_da->month, $_da->dayofmonth ) );
-
+				$this->purge_url(get_day_link($_da->year, $_da->month, $_da->dayofmonth));
 			}
 		} else {
-			$this->log( '- ' . __( 'No daily archives', 'nginx-helper' ) );
+			$this->log('- ' . __('No daily archives', 'nginx-helper'));
 		}
-
 	}
 
 	/**
 	 * Purge all monthly archives.
 	 */
-	private function _purge_all_monthly_archives() {
+	private function _purge_all_monthly_archives()
+	{
 
 		global $wpdb;
 
-		$this->log( __( 'Purging all monthly archives.', 'nginx-helper' ) );
+		$this->log(__('Purging all monthly archives.', 'nginx-helper'));
 
-		$_monthly_archives = wp_cache_get( 'nginx_helper_monthly_archives', 'nginx_helper' );
+		$_monthly_archives = wp_cache_get('nginx_helper_monthly_archives', 'nginx_helper');
 
-		if ( empty( $_monthly_archives ) ) {
+		if (empty($_monthly_archives)) {
 
 			$_query_monthly_archives = $wpdb->prepare(
 				"SELECT YEAR(post_date) AS %s, MONTH(post_date) AS %s, count(ID) as posts
@@ -1066,38 +1054,36 @@ private function _purge_all_monthly_archives() {
 				'publish'
 			);
 
-			$_monthly_archives = $wpdb->get_results( $_query_monthly_archives ); // phpcs:ignore
-
-			wp_cache_set( 'nginx_helper_monthly_archives', $_monthly_archives, 'nginx_helper', 24 * 60 * 60 );
+			$_monthly_archives = $wpdb->get_results($_query_monthly_archives); // phpcs:ignore
 
+			wp_cache_set('nginx_helper_monthly_archives', $_monthly_archives, 'nginx_helper', 24 * 60 * 60);
 		}
 
-		if ( ! empty( $_monthly_archives ) ) {
-
-			foreach ( $_monthly_archives as $_ma ) {
+		if (!empty($_monthly_archives)) {
 
-				$this->log( sprintf( '+ ' . __( "Purging monthly archive '%1\$s/%2\$s'", 'nginx-helper' ), $_ma->year, $_ma->month ) );
-				$this->purge_url( get_month_link( $_ma->year, $_ma->month ) );
+			foreach ($_monthly_archives as $_ma) {
 
+				$this->log(sprintf('+ ' . __("Purging monthly archive '%1\$s/%2\$s'", 'nginx-helper'), $_ma->year, $_ma->month));
+				$this->purge_url(get_month_link($_ma->year, $_ma->month));
 			}
 		} else {
-			$this->log( '- ' . __( 'No monthly archives', 'nginx-helper' ) );
+			$this->log('- ' . __('No monthly archives', 'nginx-helper'));
 		}
-
 	}
 
 	/**
 	 * Purge all yearly archive cache.
 	 */
-	private function _purge_all_yearly_archives() {
+	private function _purge_all_yearly_archives()
+	{
 
 		global $wpdb;
 
-		$this->log( __( 'Purging all yearly archives.', 'nginx-helper' ) );
+		$this->log(__('Purging all yearly archives.', 'nginx-helper'));
 
-		$_yearly_archives = wp_cache_get( 'nginx_helper_yearly_archives', 'nginx_helper' );
+		$_yearly_archives = wp_cache_get('nginx_helper_yearly_archives', 'nginx_helper');
 
-		if ( empty( $_yearly_archives ) ) {
+		if (empty($_yearly_archives)) {
 
 			$_query_yearly_archives = $wpdb->prepare(
 				"SELECT YEAR(post_date) AS %s, count(ID) as posts
@@ -1110,25 +1096,22 @@ private function _purge_all_yearly_archives() {
 				'publish'
 			);
 
-			$_yearly_archives = $wpdb->get_results( $_query_yearly_archives ); // phpcs:ignore
-
-			wp_cache_set( 'nginx_helper_yearly_archives', $_yearly_archives, 'nginx_helper', 24 * 60 * 60 );
+			$_yearly_archives = $wpdb->get_results($_query_yearly_archives); // phpcs:ignore
 
+			wp_cache_set('nginx_helper_yearly_archives', $_yearly_archives, 'nginx_helper', 24 * 60 * 60);
 		}
 
-		if ( ! empty( $_yearly_archives ) ) {
+		if (!empty($_yearly_archives)) {
 
-			foreach ( $_yearly_archives as $_ya ) {
+			foreach ($_yearly_archives as $_ya) {
 
 				// translators: %s: Year to purge cache.
-				$this->log( sprintf( '+ ' . esc_html__( "Purging yearly archive '%s'", 'nginx-helper' ), $_ya->year ) );
-				$this->purge_url( get_year_link( $_ya->year ) );
-
+				$this->log(sprintf('+ ' . esc_html__("Purging yearly archive '%s'", 'nginx-helper'), $_ya->year));
+				$this->purge_url(get_year_link($_ya->year));
 			}
 		} else {
-			$this->log( '- ' . __( 'No yearly archives', 'nginx-helper' ) );
+			$this->log('- ' . __('No yearly archives', 'nginx-helper'));
 		}
-
 	}
 
 	/**
@@ -1136,18 +1119,18 @@ private function _purge_all_yearly_archives() {
 	 *
 	 * @return bool
 	 */
-	public function purge_them_all() {
+	public function purge_them_all()
+	{
 
-		$this->log( __( "Let's purge everything!", 'nginx-helper' ) );
+		$this->log(__("Let's purge everything!", 'nginx-helper'));
 		$this->_purge_homepage();
 		$this->_purge_personal_urls();
 		$this->_purge_all_posts();
 		$this->_purge_all_taxonomies();
 		$this->_purge_all_date_archives();
-		$this->log( __( 'Everything purged!', 'nginx-helper' ) );
+		$this->log(__('Everything purged!', 'nginx-helper'));
 
 		return true;
-
 	}
 
 	/**
@@ -1159,33 +1142,31 @@ public function purge_them_all() {
 	 *
 	 * @return bool
 	 */
-	public function purge_on_term_taxonomy_edited( $term_id, $tt_id, $taxon ) {
+	public function purge_on_term_taxonomy_edited($term_id, $tt_id, $taxon)
+	{
 
 		global $nginx_helper_admin;
 
-		if ( ! $nginx_helper_admin->options['enable_purge'] ) {
+		if (!$nginx_helper_admin->options['enable_purge']) {
 			return;
 		}
 
-		$this->log( __( 'Term taxonomy edited or deleted', 'nginx-helper' ) );
+		$this->log(__('Term taxonomy edited or deleted', 'nginx-helper'));
 
-		$term           = get_term( $term_id, $taxon );
+		$term           = get_term($term_id, $taxon);
 		$current_filter = current_filter();
 
-		if ( 'edit_term' === $current_filter && ! is_wp_error( $term ) && ! empty( $term ) ) {
-
-			$this->log( sprintf( __( "Term taxonomy '%1\$s' edited, (tt_id '%2\$d', term_id '%3\$d', taxonomy '%4\$s')", 'nginx-helper' ), $term->name, $tt_id, $term_id, $taxon ) );
+		if ('edit_term' === $current_filter && !is_wp_error($term) && !empty($term)) {
 
-		} elseif ( 'delete_term' === $current_filter ) {
-
-			$this->log( sprintf( __( "A term taxonomy has been deleted from taxonomy '%1\$s', (tt_id '%2\$d', term_id '%3\$d')", 'nginx-helper' ), $taxon, $term_id, $tt_id ) );
+			$this->log(sprintf(__("Term taxonomy '%1\$s' edited, (tt_id '%2\$d', term_id '%3\$d', taxonomy '%4\$s')", 'nginx-helper'), $term->name, $tt_id, $term_id, $taxon));
+		} elseif ('delete_term' === $current_filter) {
 
+			$this->log(sprintf(__("A term taxonomy has been deleted from taxonomy '%1\$s', (tt_id '%2\$d', term_id '%3\$d')", 'nginx-helper'), $taxon, $term_id, $tt_id));
 		}
 
 		$this->_purge_homepage();
 
 		return true;
-
 	}
 
 	/**
@@ -1195,28 +1176,27 @@ public function purge_on_term_taxonomy_edited( $term_id, $tt_id, $taxon ) {
 	 *
 	 * @return bool
 	 */
-	public function purge_on_check_ajax_referer( $action ) {
+	public function purge_on_check_ajax_referer($action)
+	{
 
 		global $nginx_helper_admin;
 
-		if ( ! $nginx_helper_admin->options['enable_purge'] ) {
+		if (!$nginx_helper_admin->options['enable_purge']) {
 			return;
 		}
 
-		switch ( $action ) {
+		switch ($action) {
 
 			case 'save-sidebar-widgets':
-				$this->log( __( 'Widget saved, moved or removed in a sidebar', 'nginx-helper' ) );
+				$this->log(__('Widget saved, moved or removed in a sidebar', 'nginx-helper'));
 				$this->_purge_homepage();
 				break;
 
 			default:
 				break;
-
 		}
 
 		return true;
-
 	}
 
 	/**
@@ -1228,35 +1208,49 @@ public function purge_on_check_ajax_referer( $action ) {
 	 *
 	 * @return void
 	 */
-	public function unlink_recursive( $dir, $delete_root_too ) {
+	public function unlink_recursive($dir, $delete_root_too)
+	{
+		$this->log($dir);
 
-		if ( ! is_dir( $dir ) ) {
+		if (!is_dir($dir)) {
+			$this->log("{$dir} is not available. Stopping.");
 			return;
 		}
 
-		$dh = opendir( $dir );
+		$dh = opendir($dir);
 
-		if ( ! $dh ) {
+		if (!$dh) {
+			$this->log("{$dir} resource not available. Stopping.");
 			return;
 		}
 
 		// phpcs:ignore -- WordPress.CodeAnalysis.AssignmentInCondition.FoundInWhileCondition -- Variable assignment required for recursion.
-		while ( false !== ( $obj = readdir( $dh ) ) ) {
+		while (false !== ($obj = readdir($dh))) {
 
-			if ( '.' === $obj || '..' === $obj ) {
+			if ('.' === $obj || '..' === $obj) {
 				continue;
 			}
 
-			if ( ! @unlink( $dir . '/' . $obj ) ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
-				$this->unlink_recursive( $dir . '/' . $obj, false );
+			if (!@unlink($dir . '/' . $obj)) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
+				$this->unlink_recursive($dir . '/' . $obj, false);
 			}
 		}
 
-		if ( $delete_root_too ) {
-			rmdir( $dir );
+		if ($delete_root_too) {
+			rmdir($dir);
 		}
 
-		closedir( $dh );
+		closedir($dh);
 	}
 
+	public function run_cron_unlink_recursive($dir, $delete_root_too)
+	{
+		$this->log('* * * * *');
+		$this->log('* Starting to purge everything..');
+
+		$this->unlink_recursive($dir, $delete_root_too);
+
+		$this->log('* Purged Everything done.');
+		$this->log('* * * * *');
+	}
 }

From 6728c8bc030fd6c868eac323423e99a9adec95fa Mon Sep 17 00:00:00 2001
From: Abdus Fauzi <cola.sced@gmail.com>
Date: Sun, 31 Mar 2024 15:31:44 +0800
Subject: [PATCH 2/2] Update class-fastcgi-purger.php

Refactor purge_all from running the `$this->unlink_recursive()` immediately, to being scheduled to offload this task to cron service and run as soon as possible.

This to avoid the overhead of buffering the response immediately to Nginx and trigger the error "upstream sent too big header while reading response header from upstream"
---
 admin/class-fastcgi-purger.php | 24 +++++++++++++++++-------
 1 file changed, 17 insertions(+), 7 deletions(-)

diff --git a/admin/class-fastcgi-purger.php b/admin/class-fastcgi-purger.php
index 687d862..2c921b1 100644
--- a/admin/class-fastcgi-purger.php
+++ b/admin/class-fastcgi-purger.php
@@ -162,21 +162,31 @@ public function custom_purge_urls() {
 	}
 
 	/**
-	 * Purge everything.
+	 * Schedule Purge everything.
 	 */
-	public function purge_all() {
+	public function purge_all()
+	{
+
+		// Schedule the action if it's not already scheduled
+		// This to avoid overhead of buffering when there are too many directories
+		if (!wp_next_scheduled("nginx_helper_unlink_recursive")) {
+			wp_schedule_single_event(
+				time(),
+				"nginx_helper_unlink_recursive",
+				[RT_WP_NGINX_HELPER_CACHE_PATH, false]
+			);
+		}
 
-		$this->unlink_recursive( RT_WP_NGINX_HELPER_CACHE_PATH, false );
-		$this->log( '* * * * *' );
-		$this->log( '* Purged Everything!' );
-		$this->log( '* * * * *' );
+		$this->log('* * * * *');
+		$this->log('* Purged Everything has been scheduled');
+		$this->log('* * * * *');
 
 		/**
 		 * Fire an action after the FastCGI cache has been purged.
 		 *
 		 * @since 2.1.0
 		 */
-		do_action( 'rt_nginx_helper_after_fastcgi_purge_all' );
+		do_action('rt_nginx_helper_after_fastcgi_purge_all');
 	}
 
 	/**