'.PLUGINMEMORYUSAGE_VERSION.'', 'pluginmemoryusage_display_memory_usage_dashboard' ); } // Hook to add the widget to the dashboard add_action('wp_dashboard_setup', 'pluginmemoryusage_memory_usage_widget', 1); // Get supported PHP versions with caching function wpmem_get_supported_php_versions() { $supported_versions = get_transient('wpmem_supported_php_versions'); if (false === $supported_versions) { $response = wp_remote_get('https://www.php.net/supported-versions.php', array( 'sslverify' => false, 'timeout' => 5 )); if (!is_wp_error($response) && 200 === wp_remote_retrieve_response_code($response)) { $html = wp_remote_retrieve_body($response); $supported_versions = wpmem_parse_supported_versions($html); set_transient('wpmem_supported_php_versions', $supported_versions, WEEK_IN_SECONDS); } } return is_array($supported_versions) ? $supported_versions : []; } // Parse HTML response from PHP.net function wpmem_parse_supported_versions($html) { $versions = []; $dom = new DOMDocument(); @$dom->loadHTML($html); $tables = $dom->getElementsByTagName('table'); foreach ($tables as $table) { $rows = $table->getElementsByTagName('tr'); foreach ($rows as $row) { $cells = $row->getElementsByTagName('td'); if ($cells->length >= 5) { $version = trim($cells->item(0)->textContent); $eol_date = DateTime::createFromFormat('d M Y', trim($cells->item(3)->textContent)); if ($eol_date) { $versions[$version] = [ 'eol' => $eol_date->format('Y-m-d'), 'status' => (new DateTime() < $eol_date) ? 'supported' : 'eol' ]; } } } } return $versions; } function wpmem_get_php_status($current_version) { $supported_versions = wpmem_get_supported_php_versions(); $current_branch = preg_replace('/^(\d+\.\d+).*$/', '$1', $current_version); // Check if current branch is supported foreach ($supported_versions as $version => $data) { if (version_compare($current_branch, $version, '>=') && $data['status'] === 'supported') { return 'supported'; } } return 'eol'; } // to be shown in several places function pluginmemoryusage_render_system_info() { global $wpdb; // Get PHP version and status $php_version = phpversion(); $php_status = wpmem_get_php_status($php_version); // Dashicons for PHP version status $icons = [ 'supported' => '', 'eol' => '' ]; // Get latest PHP version (from transient) $latest_php_version = get_transient('wpmem_latest_php_version'); if (!$latest_php_version) { $latest_php_version = 'Unknown'; } $is_latest = ($latest_php_version !== 'Unknown') ? version_compare($php_version, $latest_php_version, '>=') : false; // Get MySQL version (with caching) $mysql_version = wp_cache_get('wpmem_mysql_version'); if (false === $mysql_version) { // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery -- No WP API for MySQL version; safe, read-only query and result is cached. $mysql_version = $wpdb->get_var("SELECT VERSION()"); wp_cache_set('wpmem_mysql_version', $mysql_version, '', 12 * HOUR_IN_SECONDS); } // Get max upload size $max_upload = ini_get('upload_max_filesize'); $max_post = ini_get('post_max_size'); $memory_limit = ini_get('memory_limit'); $upload_mb = min( wp_convert_hr_to_bytes($max_upload), wp_convert_hr_to_bytes($max_post), wp_convert_hr_to_bytes($memory_limit) ); // Get WP and PHP memory limits $wp_memory_limit = wp_convert_hr_to_bytes(WP_MEMORY_LIMIT); $php_memory_limit = ini_get('memory_limit'); echo '

WordPress Version: ' . esc_html(get_bloginfo('version')) . '

'; echo '

PHP Version: ' . esc_html($php_version); echo wp_kses_post($icons[$php_status]); if ('Unknown' !== $latest_php_version) { $label = $is_latest ? 'Latest' : 'Latest: ' . esc_html($latest_php_version); $class = $is_latest ? 'php-version-latest' : 'php-version-outdated'; echo ' ' . esc_html($label) . ''; } else { echo ' (Version check failed)'; } echo '

'; echo '

MySQL Version: ' . esc_html($mysql_version) . '

'; echo '

Max Upload Size: ' . esc_html(size_format($upload_mb)) . '

'; echo '

WordPress Memory Limit: ' . esc_html(size_format($wp_memory_limit)) . '

'; echo '

PHP Memory Limit: ' . esc_html($php_memory_limit) . '

'; } // Function to display content in the dashboard widget function pluginmemoryusage_display_memory_usage_dashboard() { global $wpdb; // Get WordPress memory limit $wp_memory_limit = wp_convert_hr_to_bytes(WP_MEMORY_LIMIT); // Get current memory usage $current_memory_usage = memory_get_usage(true); // Calculate percentage used $percentage_used = ($current_memory_usage / $wp_memory_limit) * 100; // Display the data - In seperate function for reusability pluginmemoryusage_render_system_info(); // Display memory usage echo '

Current Memory Usage: '; echo esc_html(size_format($current_memory_usage)) . ' of ' . esc_html(size_format($wp_memory_limit)) . '

'; echo '

' . esc_html(round($percentage_used, 1)) . '%

'; // Message to increase memory limit if usage is high if ($current_memory_usage > $wp_memory_limit * 0.8) { echo 'You are using more than 80% of allocated memory. Please go to Memory Control Panel to try to increase memory limit '; echo '

'; } // Add button to Plugin Memory Control Panel echo '

Plugin Memory Control Panel

'; } function wpmem_memory_usage_admin_page() { ?>

Plugin Memory Usage - Control Panel

System Information

Current Memory Usage

Using of

%

Memory fluctuate. Please press button once after entering panel. $wp_memory_limit * 0.8) { echo '

You are using more than 80% of allocated memory. Please click button below to try to increase memory limit.

'; echo '

'; echo '

'; } ?>

Memory Usage History

This plugin measures changes in WordPress memory usage as you activate and deactivate plugins. Here's how it works:

It records the current memory usage of WordPress.
When you activate or deactivate a plugin, it measures the memory usage again.
The difference between these measurements gives an estimate of the plugin's memory impact.
This process is repeated each time you toggle a plugin.

Note: These measurements are estimates and may vary. Factors like caching, other active plugins, and WordPress itself can influence memory usage. For the most accurate results, consider testing in a controlled environment.

To begin, try activating or deactivating plugins using the buttons provided. The memory usage history will appear here.

Plugins

'; foreach ($all_plugins as $plugin_path => $plugin_data) { $is_active = in_array($plugin_path, $active_plugins); $plugin_id = sanitize_title($plugin_data['Name']); $is_memory_usage_plugin = (strpos($plugin_path, 'plugin-memory-usage') !== false); $li_class = $is_active ? 'plugin-active' : 'plugin-inactive'; if ($is_memory_usage_plugin) { $li_class .= ' memory-usage-plugin'; } $avg_memory = wpmem_get_average_memory_usage($plugin_path); echo '

'; echo '

'; echo '' . esc_html($plugin_data['Name']) . ' (' . esc_html($avg_memory) . ' MB)'; echo '

'; echo '

'; echo '

'; if ($is_memory_usage_plugin) { echo ''; } else { echo ''; } echo '

'; echo '

'; } echo ''; ?>

get_error_message()); } else { wp_send_json_success(); } } add_action('wp_ajax_toggle_plugin', 'wpmem_toggle_plugin'); function wpmem_table_exists($table_name) { global $wpdb; $full_table_name = $wpdb->prefix . $table_name; // Create a unique cache key $cache_key = 'wpmem_table_exists_' . md5($full_table_name); // Try to get the result from cache $table_exists = wp_cache_get($cache_key); if (false === $table_exists) { // Cache miss, perform the database query // There isn't a reliable way to check if a table exists in WordPress without making a direct database call $result = $wpdb->get_var( // phpcs:ignore WordPress.DB.DirectDatabaseQuery $wpdb->prepare( "SHOW TABLES LIKE %s", $full_table_name ) ); $table_exists = ($result === $full_table_name); // Cache the result for future use (cache for 1 hour) wp_cache_set($cache_key, $table_exists, '', 3600); } return $table_exists; } function wpmem_refresh_memory_usage() { check_ajax_referer('wp_memory_usage_nonce', 'nonce'); global $wpdb; $table_name = $wpdb->prefix . 'wpmem_plugin_history'; // Check if the table exists if (!wpmem_table_exists('wpmem_plugin_history')) { wpmem_create_history_table(); } $current_memory = memory_get_usage(true); $formatted_memory = size_format($current_memory, 2); $percentage = round(($current_memory / wp_convert_hr_to_bytes(WP_MEMORY_LIMIT)) * 100, 2); // Save the measurement if a plugin was toggled if (isset($_POST['plugin']) && isset($_POST['toggle_action'])) { $plugin = sanitize_text_field(wp_unslash($_POST['plugin'])); $previous_memory = isset($_POST['previous_memory']) ? intval($_POST['previous_memory']) : 0; $memory_change = $current_memory - $previous_memory; wpmem_save_plugin_measurement($plugin, $memory_change); } wp_send_json_success(array( 'current_memory' => $formatted_memory, 'current_memory_bytes' => $current_memory, 'percentage' => $percentage, )); } add_action('wp_ajax_refresh_memory_usage', 'wpmem_refresh_memory_usage'); add_action('admin_enqueue_scripts', 'wp_memory_usage_enqueue_styles'); function wp_memory_usage_enqueue_styles($hook) { // Load on all admin pages where the dashboard widget appears wp_enqueue_style('wp-memory-usage-styles', plugins_url('plugin-memory-usage.css', __FILE__), array(), filemtime(plugin_dir_path(__FILE__) . 'plugin-memory-usage.css') ); } function wpmem_enqueue_scripts($hook) { if ($hook != 'toplevel_page_wp_plugin_memory_usage') { return; } wp_enqueue_script('wpmem-script', plugins_url('plugin-memory-usage.js', __FILE__), array(), '1.0', true); $nonce = wp_create_nonce('wp_memory_usage_nonce'); wp_localize_script('wpmem-script', 'wpmemData', array( 'wpmem_ajaxurl' => admin_url('admin-ajax.php'), 'nonce' => $nonce, 'initialMemoryUsage' => memory_get_usage(true), 'pluginHistory' => wpmem_get_all_plugin_history() )); } add_action('admin_enqueue_scripts', 'wpmem_enqueue_scripts'); function wpmem_create_history_table() { global $wpdb; $table_name = $wpdb->prefix . 'wpmem_plugin_history'; $charset_collate = $wpdb->get_charset_collate(); $sql = "CREATE TABLE $table_name ( id mediumint(9) NOT NULL AUTO_INCREMENT, plugin_path varchar(255) NOT NULL, memory_change bigint(20) NOT NULL, zero_count int(11) NOT NULL DEFAULT 0, timestamp datetime DEFAULT CURRENT_TIMESTAMP NOT NULL, PRIMARY KEY (id) ) $charset_collate;"; require_once(ABSPATH . 'wp-admin/includes/upgrade.php'); $result = dbDelta($sql); if (!empty($wpdb->last_error)) { return false; } return true; } register_activation_hook(__FILE__, 'wpmem_create_history_table'); function wpmem_save_plugin_measurement($plugin_path, $memory_change) { global $wpdb; $table_name = $wpdb->prefix . 'wpmem_plugin_history'; // Convert memory_change to its absolute value $memory_change = abs($memory_change); if ($memory_change == 0) { // Increment zero count for the most recent entry $wpdb->query( // phpcs:ignore WordPress.DB.DirectDatabaseQuery $wpdb->prepare( "UPDATE `" . esc_sql($table_name) . "` SET zero_count = zero_count + 1 WHERE plugin_path = %s ORDER BY timestamp DESC LIMIT 1", $plugin_path ) ); } else { // Insert new non-zero measurement $wpdb->insert( // phpcs:ignore WordPress.DB.DirectDatabaseQuery $table_name, array( 'plugin_path' => $plugin_path, 'memory_change' => $memory_change, 'zero_count' => 0, ) ); } // Clear caches wpmem_clear_plugin_history_cache($plugin_path); wpmem_clear_all_plugin_history_cache(); wpmem_clear_average_memory_cache($plugin_path); } function wpmem_get_plugin_history($plugin_path) { global $wpdb; $table_name = $wpdb->prefix . 'wpmem_plugin_history'; // Create a unique cache key for this query $cache_key = 'wpmem_plugin_history_' . md5($plugin_path); // Try to get the results from cache $results = wp_cache_get($cache_key); // If the results are not in cache, query the database if (false === $results) { $results = $wpdb->get_results( // phpcs:ignore WordPress.DB.DirectDatabaseQuery $wpdb->prepare( "SELECT memory_change, timestamp FROM `" . esc_sql($table_name) . "` WHERE plugin_path = %s ORDER BY timestamp DESC LIMIT 5", $plugin_path ) ); // Cache the results for future use wp_cache_set($cache_key, $results, '', 3600); // Cache for 1 hour } return $results; } function wpmem_clear_plugin_history_cache($plugin_path) { $cache_key = 'wpmem_plugin_history_' . md5($plugin_path); wp_cache_delete($cache_key); } add_action('wp_ajax_get_plugin_history', 'wpmem_get_plugin_history_ajax'); function wpmem_get_plugin_history_ajax() { check_ajax_referer('wp_memory_usage_nonce', 'nonce'); if (!isset($_POST['plugin'])) { wp_send_json_error('Plugin not specified'); } $plugin = sanitize_text_field(wp_unslash($_POST['plugin'])); $history = wpmem_get_plugin_history($plugin); wp_send_json_success($history); } function wpmem_get_all_plugin_history() { global $wpdb; $table_name = $wpdb->prefix . 'wpmem_plugin_history'; // Create a unique cache key for this query $cache_key = 'wpmem_all_plugin_history'; // Try to get the results from cache $results = wp_cache_get($cache_key); // If the results are not in cache, query the database if (false === $results) { $results = $wpdb->get_results( // phpcs:ignore WordPress.DB.DirectDatabaseQuery $wpdb->prepare( "SELECT plugin_path, memory_change, timestamp FROM `" . esc_sql($table_name) . "` WHERE plugin_path IN (SELECT DISTINCT plugin_path FROM `" . esc_sql($table_name) . "`) ORDER BY timestamp DESC -- %d", 1 ) ); // Cache the results for future use wp_cache_set($cache_key, $results, '', 3600); // Cache for 1 hour } // Process results... $history = array(); foreach ($results as $row) { if (!isset($history[$row->plugin_path])) { $history[$row->plugin_path] = array(); } if (count($history[$row->plugin_path]) < 5) { $history[$row->plugin_path][] = array( 'memory_change' => $row->memory_change, 'timestamp' => $row->timestamp ); } } return $history; } function wpmem_clear_all_plugin_history_cache() { wp_cache_delete('wpmem_all_plugin_history'); } function wpmem_clear_table_exists_cache() { global $wpdb; $table_name = $wpdb->prefix . 'wpmem_plugin_history'; $cache_key = 'wpmem_table_exists_' . $table_name; wp_cache_delete($cache_key); } // Reset table verification cache when changing plugin state register_activation_hook(__FILE__, 'wpmem_clear_table_exists_cache'); // Pre-activation check register_deactivation_hook(__FILE__, 'wpmem_clear_table_exists_cache'); // Post-deactivation cleanup function wpmem_get_average_memory_usage($plugin_path) { global $wpdb; $table_name = $wpdb->prefix . 'wpmem_plugin_history'; // Create a unique cache key $cache_key = 'wpmem_avg_memory_' . md5($plugin_path); // Try to get the result from cache $avg_memory = wp_cache_get($cache_key); if (false === $avg_memory) { // Cache miss, perform the database query $result = $wpdb->get_row( // phpcs:ignore WordPress.DB.DirectDatabaseQuery $wpdb->prepare( "SELECT SUM(memory_change) as total_change, COUNT(*) as non_zero_count, SUM(zero_count) as zero_count FROM `" . esc_sql($table_name) . "` WHERE plugin_path = %s", $plugin_path ) ); if ($result) { $total_count = $result->non_zero_count + $result->zero_count; $avg_memory = $total_count > 0 ? ($result->total_change / $total_count) / (1024 * 1024) : 0; $avg_memory = round($avg_memory, 2); // Round to 2 decimal places } else { $avg_memory = 0; } // Cache the result for future use (cache for 5 minutes) wp_cache_set($cache_key, $avg_memory, '', 300); } return $avg_memory; } function wpmem_clear_average_memory_cache($plugin_path) { $cache_key = 'wpmem_avg_memory_' . md5($plugin_path); wp_cache_delete($cache_key); } add_action('wp_ajax_update_average_memory', 'wpmem_update_average_memory'); add_action('wp_ajax_nopriv_update_average_memory', 'wpmem_update_average_memory'); function wpmem_update_average_memory() { // Check nonce for security if (!isset($_POST['nonce'])) { wp_send_json_error('Security token not provided'); } $nonce = sanitize_text_field(wp_unslash($_POST['nonce'])); if (!wp_verify_nonce($nonce, 'wp_memory_usage_nonce')) { wp_send_json_error('Invalid security token'); } if (!isset($_POST['plugin_path'])) { wp_send_json_error('Plugin path not provided'); } $plugin_path = sanitize_text_field(wp_unslash($_POST['plugin_path'])); $avg_memory = wpmem_get_average_memory_usage($plugin_path); wp_send_json_success(array('avg_memory' => $avg_memory)); } function wpmem_add_increase_memory_button($content) { $wp_memory_limit = wp_convert_hr_to_bytes(WP_MEMORY_LIMIT); $current_memory_usage = memory_get_usage(true); if ($current_memory_usage > $wp_memory_limit) { $content .= ''; $content .= ''; } return $content; } add_filter('wpmem_memory_usage_content', 'wpmem_add_increase_memory_button'); function wpmem_increase_memory_limit() { check_ajax_referer('wp_memory_usage_nonce', 'nonce'); if (!current_user_can('manage_options')) { wp_send_json_error(array('message' => 'Insufficient permissions')); } $current_limit = wp_convert_hr_to_bytes(WP_MEMORY_LIMIT); // If current limit is 160MB or less, double it. Otherwise, increase by 25%. if ($current_limit < 160 * 1024 * 1024) { // 160 MB in bytes $new_limit = $current_limit * 2; } else { $new_limit = (int)($current_limit * 1.25); // Increase by 25% } // Optional: Cap the maximum limit to avoid runaway values (e.g., 512MB) $max_limit = 512 * 1024 * 1024; // 512 MB in bytes if ($new_limit > $max_limit) { $new_limit = $max_limit; } // Attempt to increase the limit if (wpmem_set_memory_limit($new_limit)) { wp_send_json_success(array('new_limit' => size_format($new_limit))); } else { wp_send_json_error(array('message' => 'Unable to increase memory limit. You may need to contact your hosting provider.')); } } add_action('wp_ajax_increase_memory_limit', 'wpmem_increase_memory_limit'); function wpmem_set_memory_limit($new_limit) { global $wp_filesystem; // Initialize the WP filesystem if (empty($wp_filesystem)) { require_once (ABSPATH . '/wp-admin/includes/file.php'); WP_Filesystem(); } $wp_config_file = ABSPATH . 'wp-config.php'; $config_content = $wp_filesystem->get_contents($wp_config_file); if ($config_content === false) { return false; } $new_limit_formatted = size_format($new_limit); if (preg_match("/define\(\s*'WP_MEMORY_LIMIT',\s*'.*?'\s*\);/", $config_content)) { // WP_MEMORY_LIMIT is already defined, so update it $new_content = preg_replace( "/define\(\s*'WP_MEMORY_LIMIT',\s*'.*?'\s*\);/", "define('WP_MEMORY_LIMIT', '$new_limit_formatted');", $config_content ); } else { // WP_MEMORY_LIMIT is not defined, so add it $new_content = preg_replace( "/<\?php/", "put_contents($wp_config_file, $new_content) === false) { return false; } return true; } function wpmem_add_settings_link($links) { $settings_link = 'Settings'; array_unshift($links, $settings_link); return $links; } $plugin = plugin_basename(__FILE__); add_filter("plugin_action_links_$plugin", 'wpmem_add_settings_link'); function wpmem_add_memory_to_admin_bar($wp_admin_bar) { $wp_memory_limit = wp_convert_hr_to_bytes(WP_MEMORY_LIMIT); $current_memory_usage = memory_get_usage(true); $percentage_used = round(($current_memory_usage / $wp_memory_limit) * 100, 1); $wp_admin_bar->add_node(array( 'id' => 'wpmem_memory_usage', 'title' => 'MEM: ' . $percentage_used . '%', 'href' => admin_url('admin.php?page=wp_plugin_memory_usage'), 'meta' => array( 'title' => 'Current memory usage', ), )); } add_action('admin_bar_menu', 'wpmem_add_memory_to_admin_bar', 100); ?>