447 lines
16 KiB
PHP
447 lines
16 KiB
PHP
|
<?php
|
|||
|
|
namespace WpAssetCleanUp;
|
|||
|
|
|
|||
|
|
use WpAssetCleanUp\OptimiseAssets\OptimizeCommon;
|
|||
|
|
use WpAssetCleanUp\OptimiseAssets\OptimizeCss;
|
|||
|
|
use WpAssetCleanUp\OptimiseAssets\OptimizeJs;
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Class Plugin
|
|||
|
|
* @package WpAssetCleanUp
|
|||
|
|
*/
|
|||
|
|
class Plugin
|
|||
|
|
{
|
|||
|
|
/**
|
|||
|
|
*
|
|||
|
|
*/
|
|||
|
|
const RATE_URL = 'https://wordpress.org/support/plugin/wp-asset-clean-up/reviews/#new-post';
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Plugin constructor.
|
|||
|
|
*/
|
|||
|
|
public function __construct()
|
|||
|
|
{
|
|||
|
|
register_activation_hook(WPACU_PLUGIN_FILE, array($this, 'whenActivated'));
|
|||
|
|
register_deactivation_hook(WPACU_PLUGIN_FILE, array($this, 'whenDeactivated'));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
*
|
|||
|
|
*/
|
|||
|
|
public function init()
|
|||
|
|
{
|
|||
|
|
// After fist time activation or in specific situations within the Dashboard
|
|||
|
|
add_action('admin_init', array($this, 'adminInit'));
|
|||
|
|
|
|||
|
|
// [wpacu_lite]
|
|||
|
|
// Admin footer text: Ask the user to review the plugin
|
|||
|
|
add_filter('admin_footer_text', array($this, 'adminFooterText'), 1, 1);
|
|||
|
|
// [/wpacu_lite]
|
|||
|
|
|
|||
|
|
// Show default action links: "Getting Started", "Settings"
|
|||
|
|
add_filter('plugin_action_links_'.WPACU_PLUGIN_BASE, array($this, 'addActionLinksInPluginsPage'));
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// [wpacu_lite]
|
|||
|
|
/**
|
|||
|
|
* @param $text
|
|||
|
|
*
|
|||
|
|
* @return string
|
|||
|
|
*/
|
|||
|
|
public function adminFooterText($text)
|
|||
|
|
{
|
|||
|
|
if (Menu::isPluginPage()) {
|
|||
|
|
$text = sprintf(__('Thank you for using %s', 'wp-asset-clean-up'), WPACU_PLUGIN_TITLE.' v'.WPACU_PLUGIN_VERSION)
|
|||
|
|
. ' <span class="dashicons dashicons-smiley"></span> ';
|
|||
|
|
|
|||
|
|
$text .= sprintf(
|
|||
|
|
__('If you like it, please %s<strong>rate</strong> %s%s %s on WordPress.org to help me spread the word to the community.', 'wp-asset-clean-up'),
|
|||
|
|
'<a target="_blank" href="'.self::RATE_URL.'">',
|
|||
|
|
WPACU_PLUGIN_TITLE,
|
|||
|
|
'</a>',
|
|||
|
|
'<a target="_blank" href="'.self::RATE_URL.'"><span class="dashicons dashicons-wpacu dashicons-star-filled"></span><span class="dashicons dashicons-wpacu dashicons-star-filled"></span><span class="dashicons dashicons-wpacu dashicons-star-filled"></span><span class="dashicons dashicons-wpacu dashicons-star-filled"></span><span class="dashicons dashicons-wpacu dashicons-star-filled"></span></a>'
|
|||
|
|
);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return $text;
|
|||
|
|
}
|
|||
|
|
// [/wpacu_lite]
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Actions taken when the plugin is activated
|
|||
|
|
*/
|
|||
|
|
public function whenActivated()
|
|||
|
|
{
|
|||
|
|
if (WPACU_WRONG_PHP_VERSION === 'true') {
|
|||
|
|
$recordMsg = __( '"Asset CleanUp" plugin has not been activated because the PHP version used on this server is below 5.6.',
|
|||
|
|
'wp-asset-clean-up' );
|
|||
|
|
deactivate_plugins( WPACU_PLUGIN_BASE );
|
|||
|
|
error_log( $recordMsg );
|
|||
|
|
wp_die($recordMsg);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Prepare for the redirection to the WPACU_ADMIN_PAGE_ID_START plugin page
|
|||
|
|
// If there is no record that the plugin was already activated at least once
|
|||
|
|
if ( ! get_option(WPACU_PLUGIN_ID.'_first_usage') ) {
|
|||
|
|
set_transient(WPACU_PLUGIN_ID . '_redirect_after_activation', 1, 15);
|
|||
|
|
|
|||
|
|
// Make a record when Asset CleanUp (Pro) is used for the first time
|
|||
|
|
// In case this is the first time the plugin is activated
|
|||
|
|
self::triggerFirstUsage();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Note: Could be /wp-content/uploads/ if constant WPACU_CACHE_DIR was used
|
|||
|
|
*
|
|||
|
|
* /wp-content/cache/asset-cleanup/
|
|||
|
|
* /wp-content/cache/asset-cleanup/index.php
|
|||
|
|
* /wp-content/cache/asset-cleanup/.htaccess
|
|||
|
|
*
|
|||
|
|
* /wp-content/cache/asset-cleanup/css/
|
|||
|
|
* /wp-content/cache/asset-cleanup/css/item/
|
|||
|
|
* /wp-content/cache/asset-cleanup/css/index.php
|
|||
|
|
*
|
|||
|
|
* /wp-content/cache/asset-cleanup/js/
|
|||
|
|
* /wp-content/cache/asset-cleanup/js/item/
|
|||
|
|
* /wp-content/cache/asset-cleanup/js/index.php
|
|||
|
|
*
|
|||
|
|
*/
|
|||
|
|
self::createCacheFoldersFiles(array('css','js'));
|
|||
|
|
|
|||
|
|
// Do not apply plugin's settings/rules on WooCommerce/EDD Checkout/Cart pages
|
|||
|
|
if (function_exists('wc_get_page_id')) {
|
|||
|
|
if ($wooCheckOutPageId = wc_get_page_id('checkout')) {
|
|||
|
|
Misc::doNotApplyOptimizationOnPage($wooCheckOutPageId);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if ($wooCartPageId = wc_get_page_id('cart')) {
|
|||
|
|
Misc::doNotApplyOptimizationOnPage($wooCartPageId);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (function_exists('edd_get_option') && $eddPurchasePage = edd_get_option('purchase_page', '')) {
|
|||
|
|
Misc::doNotApplyOptimizationOnPage($eddPurchasePage);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Actions taken when the plugin is deactivated
|
|||
|
|
*/
|
|||
|
|
public function whenDeactivated()
|
|||
|
|
{
|
|||
|
|
// Clear traces of the plugin which are re-generated once the plugin is enabled
|
|||
|
|
// This is good when the admin wants to completely uninstall the plugin
|
|||
|
|
self::clearAllTransients();
|
|||
|
|
self::removeCacheDirWithoutAssets();
|
|||
|
|
|
|||
|
|
// Clear other plugin's cache (if they are active)
|
|||
|
|
OptimizeCommon::clearOtherPluginsCache();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Removes all plugin's transients, this is usually done when the plugin is deactivated
|
|||
|
|
*/
|
|||
|
|
public static function clearAllTransients()
|
|||
|
|
{
|
|||
|
|
global $wpdb;
|
|||
|
|
|
|||
|
|
// Remove all transients
|
|||
|
|
$transientLikes = array(
|
|||
|
|
'_transient_wpacu_',
|
|||
|
|
'_transient_'.WPACU_PLUGIN_ID.'_'
|
|||
|
|
);
|
|||
|
|
|
|||
|
|
$transientLikesSql = '';
|
|||
|
|
|
|||
|
|
foreach ($transientLikes as $transientLike) {
|
|||
|
|
$transientLikesSql .= " option_name LIKE '".$transientLike."%' OR ";
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
$transientLikesSql = rtrim($transientLikesSql, ' OR ');
|
|||
|
|
|
|||
|
|
$sqlQuery = <<<SQL
|
|||
|
|
SELECT option_name FROM `{$wpdb->prefix}options` WHERE {$transientLikesSql}
|
|||
|
|
SQL;
|
|||
|
|
$transientsToClear = $wpdb->get_col($sqlQuery);
|
|||
|
|
|
|||
|
|
if (! empty($transientsToClear)) {
|
|||
|
|
foreach ( $transientsToClear as $transientToClear ) {
|
|||
|
|
$transientNameToClear = str_replace( '_transient_', '', $transientToClear );
|
|||
|
|
delete_transient( $transientNameToClear );
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* This is usually triggered when the plugin is deactivated
|
|||
|
|
* If the caching directory doesn't have any CSS/JS left, it will clear itself
|
|||
|
|
* The admin might want to clear all traces of the plugin
|
|||
|
|
* If the plugin is re-activated, the caching directory will be re-created automatically
|
|||
|
|
*/
|
|||
|
|
public static function removeCacheDirWithoutAssets()
|
|||
|
|
{
|
|||
|
|
$pathToCacheDir = WP_CONTENT_DIR . OptimizeCommon::getRelPathPluginCacheDir();
|
|||
|
|
|
|||
|
|
if (! is_dir($pathToCacheDir)) {
|
|||
|
|
return;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
$pathToCacheDirCss = WP_CONTENT_DIR . OptimizeCss::getRelPathCssCacheDir();
|
|||
|
|
$pathToCacheDirJs = WP_CONTENT_DIR . OptimizeJs::getRelPathJsCacheDir();
|
|||
|
|
|
|||
|
|
$allCssFiles = glob( $pathToCacheDirCss . '**/*.css' );
|
|||
|
|
$allJsFiles = glob( $pathToCacheDirJs . '**/*.js' );
|
|||
|
|
|
|||
|
|
// Only valid when there's no CSS or JS (not one single file) there
|
|||
|
|
if ( count( $allCssFiles ) === 0 && count( $allJsFiles ) === 0 ) {
|
|||
|
|
$dirItems = new \RecursiveDirectoryIterator( $pathToCacheDir );
|
|||
|
|
|
|||
|
|
$allDirs = array($pathToCacheDir);
|
|||
|
|
|
|||
|
|
// First, remove the files
|
|||
|
|
foreach ( new \RecursiveIteratorIterator( $dirItems, \RecursiveIteratorIterator::SELF_FIRST,
|
|||
|
|
\RecursiveIteratorIterator::CATCH_GET_CHILD ) as $item) {
|
|||
|
|
if (is_dir($item)) {
|
|||
|
|
$allDirs[] = $item;
|
|||
|
|
} else {
|
|||
|
|
@unlink($item);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if ( ! empty($allDirs) ) {
|
|||
|
|
usort( $allDirs, static function( $a, $b ) {
|
|||
|
|
return strlen( $b ) - strlen( $a );
|
|||
|
|
} );
|
|||
|
|
|
|||
|
|
// Then, remove the empty dirs in descending order (up to the root)
|
|||
|
|
foreach ($allDirs as $dir) {
|
|||
|
|
Misc::rmDir($dir);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* @param $assetTypes
|
|||
|
|
*/
|
|||
|
|
public static function createCacheFoldersFiles($assetTypes)
|
|||
|
|
{
|
|||
|
|
foreach ($assetTypes as $assetType) {
|
|||
|
|
if ($assetType === 'css') {
|
|||
|
|
$cacheDir = WP_CONTENT_DIR . OptimiseAssets\OptimizeCss::getRelPathCssCacheDir();
|
|||
|
|
} elseif ($assetType === 'js') {
|
|||
|
|
$cacheDir = WP_CONTENT_DIR . OptimiseAssets\OptimizeJs::getRelPathJsCacheDir();
|
|||
|
|
} else {
|
|||
|
|
return;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
$emptyPhpFileContents = <<<TEXT
|
|||
|
|
<?php
|
|||
|
|
// Silence is golden.
|
|||
|
|
TEXT;
|
|||
|
|
|
|||
|
|
$htAccessContents = <<<HTACCESS
|
|||
|
|
<IfModule mod_autoindex.c>
|
|||
|
|
Options -Indexes
|
|||
|
|
</IfModule>
|
|||
|
|
HTACCESS;
|
|||
|
|
|
|||
|
|
if ( ! is_dir( $cacheDir ) ) {
|
|||
|
|
@mkdir( $cacheDir, FS_CHMOD_DIR, true );
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if ( ! is_file( $cacheDir . 'index.php' ) ) {
|
|||
|
|
// /wp-content/cache/asset-cleanup/cache/(css|js)/index.php
|
|||
|
|
FileSystem::filePutContents( $cacheDir . 'index.php', $emptyPhpFileContents );
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if ( ! is_dir( $cacheDir . OptimizeCommon::$optimizedSingleFilesDir ) ) {
|
|||
|
|
// /wp-content/cache/asset-cleanup/cache/(css|js)/item/
|
|||
|
|
@mkdir( $cacheDir . OptimizeCommon::$optimizedSingleFilesDir, FS_CHMOD_DIR );
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// For large inline STYLE & SCRIPT tags
|
|||
|
|
if ( ! is_dir( $cacheDir . OptimizeCommon::$optimizedSingleFilesDir.'/inline' ) ) {
|
|||
|
|
// /wp-content/cache/asset-cleanup/cache/(css|js)/item/inline/
|
|||
|
|
@mkdir( $cacheDir . OptimizeCommon::$optimizedSingleFilesDir.'/inline', FS_CHMOD_DIR );
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if ( ! is_file( $cacheDir . OptimizeCommon::$optimizedSingleFilesDir.'/inline/index.php' ) ) {
|
|||
|
|
// /wp-content/cache/asset-cleanup/cache/(css|js)/item/inline/index.php
|
|||
|
|
FileSystem::filePutContents( $cacheDir . OptimizeCommon::$optimizedSingleFilesDir.'/inline/index.php', $emptyPhpFileContents );
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
$htAccessFilePath = dirname( $cacheDir ) . '/.htaccess';
|
|||
|
|
|
|||
|
|
if ( ! is_file( $htAccessFilePath ) ) {
|
|||
|
|
// /wp-content/cache/asset-cleanup/.htaccess
|
|||
|
|
FileSystem::filePutContents( $htAccessFilePath, $htAccessContents );
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if ( ! is_file( dirname( $cacheDir ) . '/index.php' ) ) {
|
|||
|
|
// /wp-content/cache/asset-cleanup/index.php
|
|||
|
|
FileSystem::filePutContents( dirname( $cacheDir ) . '/index.php', $emptyPhpFileContents );
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Storage directory for JSON/TEXT files (information purpose)
|
|||
|
|
$storageDir = WP_CONTENT_DIR . OptimiseAssets\OptimizeCommon::getRelPathPluginCacheDir() . '_storage/';
|
|||
|
|
|
|||
|
|
if ( ! is_dir($storageDir . OptimizeCommon::$optimizedSingleFilesDir) ) {
|
|||
|
|
@mkdir( $storageDir . OptimizeCommon::$optimizedSingleFilesDir, FS_CHMOD_DIR, true );
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
$siteStorageCache = $storageDir.'/'.str_replace(array('https://', 'http://', '//'), '', site_url());
|
|||
|
|
|
|||
|
|
if ( ! is_dir($storageDir) ) {
|
|||
|
|
@mkdir( $siteStorageCache, FS_CHMOD_DIR, true );
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
*
|
|||
|
|
*/
|
|||
|
|
public function adminInit()
|
|||
|
|
{
|
|||
|
|
if ( // If this condition does not match, do not make the extra DB calls to "options" table to save resources
|
|||
|
|
isset($_SERVER['HTTP_REFERER']) && strpos($_SERVER['HTTP_REFERER'], '/plugins.php') !== false &&
|
|||
|
|
get_transient(WPACU_PLUGIN_ID . '_redirect_after_activation') ) {
|
|||
|
|
// Remove it as only one redirect is needed (first time the plugin is activated)
|
|||
|
|
delete_transient(WPACU_PLUGIN_ID . '_redirect_after_activation');
|
|||
|
|
|
|||
|
|
// Do the 'first activation time' redirection
|
|||
|
|
wp_redirect(admin_url('admin.php?page=' . WPACU_ADMIN_PAGE_ID_START));
|
|||
|
|
exit();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* @param $links
|
|||
|
|
*
|
|||
|
|
* @return mixed
|
|||
|
|
*/
|
|||
|
|
public function addActionLinksInPluginsPage($links)
|
|||
|
|
{
|
|||
|
|
$links['getting_started'] = '<a href="admin.php?page=' . WPACU_PLUGIN_ID . '_getting_started">'.__('Getting Started', 'wp-asset-clean-up').'</a>';
|
|||
|
|
$links['settings'] = '<a href="admin.php?page=' . WPACU_PLUGIN_ID . '_settings">'.__('Settings', 'wp-asset-clean-up').'</a>';
|
|||
|
|
|
|||
|
|
// [wpacu_lite]
|
|||
|
|
$allPlugins = get_plugins();
|
|||
|
|
|
|||
|
|
// If the Pro version is not installed (active or not), show the upgrade link
|
|||
|
|
if (! array_key_exists('wp-asset-clean-up-pro/wpacu.php', $allPlugins)) {
|
|||
|
|
$links['go_pro'] = '<a target="_blank" style="font-weight: bold;" href="'.apply_filters('wpacu_go_pro_affiliate_link', WPACU_PLUGIN_GO_PRO_URL).'">'.__('Go Pro', 'wp-asset-clean-up').'</a>';
|
|||
|
|
}
|
|||
|
|
// [/wpacu_lite]
|
|||
|
|
|
|||
|
|
return $links;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Make a record when Asset CleanUp (Pro) is used for the first time (if it's not there already)
|
|||
|
|
*/
|
|||
|
|
public static function triggerFirstUsage()
|
|||
|
|
{
|
|||
|
|
Misc::addUpdateOption(WPACU_PLUGIN_ID . '_first_usage', time());
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* This works like /?wpacu_no_load with a fundamental difference:
|
|||
|
|
* It needs to be triggered through a very early 'init' / 'setup_theme' action hook after all plugins are loaded, thus it can't be used in /early-triggers.php
|
|||
|
|
* e.g. in situations when the page is an AMP one, prevent any changes to the HTML source by Asset CleanUp (Pro)
|
|||
|
|
*
|
|||
|
|
* @param string $tagActionName
|
|||
|
|
* @param string $htmlSource
|
|||
|
|
*
|
|||
|
|
* @return bool
|
|||
|
|
*/
|
|||
|
|
public static function preventAnyFrontendOptimization($tagActionName = '', $htmlSource = '')
|
|||
|
|
{
|
|||
|
|
// Only relevant if all the plugins are already loaded
|
|||
|
|
// and in the front-end view
|
|||
|
|
if (! defined('WPACU_ALL_ACTIVE_PLUGINS_LOADED') || is_admin()) {
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Perhaps the editor from "Pro" (theme.co) is on
|
|||
|
|
if (apply_filters('wpacu_prevent_any_frontend_optimization', false)) {
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// e.g. /amp/ - /amp? - /amp/? - /?amp or ending in /amp
|
|||
|
|
$isAmpInRequestUri = ( (isset($_SERVER['REQUEST_URI']) && (preg_match('/(\/amp$|\/amp\?)|(\/amp\/|\/amp\/\?)/', $_SERVER['REQUEST_URI'])))
|
|||
|
|
|| isset($_GET['amp']) );
|
|||
|
|
|
|||
|
|
// Is it an AMP endpoint?
|
|||
|
|
if ( ($isAmpInRequestUri && Misc::isPluginActive('accelerated-mobile-pages/accelerated-mobile-pages.php')) // "AMP for WP – Accelerated Mobile Pages"
|
|||
|
|
|| ($isAmpInRequestUri && Misc::isPluginActive('amp/amp.php')) // "AMP – WordPress plugin"
|
|||
|
|
|| ((function_exists('is_wp_amp') && Misc::isPluginActive('wp-amp/wp-amp.php') && is_wp_amp())) // "WP AMP — Accelerated Mobile Pages for WordPress and WooCommerce" (Premium plugin)
|
|||
|
|
) {
|
|||
|
|
return true; // do not print anything on an AMP page
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Some pages are AMP but their URI does not end in /amp
|
|||
|
|
if ( ! defined('WPACU_DO_EXTRA_CHECKS_FOR_AMP') &&
|
|||
|
|
( Misc::isPluginActive('accelerated-mobile-pages/accelerated-mobile-pages.php')
|
|||
|
|
|| Misc::isPluginActive('amp/amp.php')
|
|||
|
|
|| Misc::isPluginActive('wp-amp/wp-amp.php') )
|
|||
|
|
) {
|
|||
|
|
define('WPACU_DO_EXTRA_CHECKS_FOR_AMP', true);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if ( isset($_GET['wpacu_clean_load']) ) {
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// $tagActionName needs to be different from 'parse_query' because is_singular() would trigger too soon and cause notice errors
|
|||
|
|
// Has the following page option set: "Do not apply any front-end optimization on this page (this includes any changes related to CSS/JS files)"
|
|||
|
|
if ($tagActionName !== 'parse_query' && MetaBoxes::hasNoFrontendOptimizationPageOption()) {
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// e.g. it could be JS content loaded dynamically such as /?wpml-app=ate-widget
|
|||
|
|
// in this case, any Asset CleanUp alteration of the content should be avoided
|
|||
|
|
// often, the code below is not reached as extra measures are taken before if well known plugins are used
|
|||
|
|
if ($htmlSource !== '') {
|
|||
|
|
$startsWithPassed = $endsWithPassed = false;
|
|||
|
|
|
|||
|
|
// More common delimiters can be added with time
|
|||
|
|
// This is just an extra measure to prevent possible empty pages due to lots of memory used in case a possible JavaScript output is too large
|
|||
|
|
$startsWithAnyFromTheList = array(
|
|||
|
|
'/*!',
|
|||
|
|
'(function()'
|
|||
|
|
);
|
|||
|
|
|
|||
|
|
$endsWithAnyFromTheList = array(
|
|||
|
|
');',
|
|||
|
|
')'
|
|||
|
|
);
|
|||
|
|
|
|||
|
|
// Possible JS content
|
|||
|
|
foreach ($startsWithAnyFromTheList as $startsWithString) {
|
|||
|
|
if (substr(trim($htmlSource), 0, strlen($startsWithString)) === $startsWithString) {
|
|||
|
|
$startsWithPassed = true;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if ($startsWithPassed) {
|
|||
|
|
foreach ($endsWithAnyFromTheList as $endsWithString) {
|
|||
|
|
if (substr(trim($htmlSource), -strlen($endsWithString)) === $endsWithString) {
|
|||
|
|
$endsWithPassed = true;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if ($startsWithPassed && $endsWithPassed) {
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
}
|