Ticket #53845: 53845.diff

src/wp-admin/includes/class-wp-debug-data.php

@@ -925 +925 @@
                         'private' => true,
                 );
 
+                $info['wp-database']['fields']['max_allowed_packet'] = array(
+                        'label' => __( 'Max allowed packet size' ),
+                        'value' => self::get_mysql_var( 'max_allowed_packet' ),
+                );
+
+                $info['wp-database']['fields']['max_connections'] = array(
+                        'label' => __( 'Max connections number' ),
+                        'value' => self::get_mysql_var( 'max_connections' ),
+                );
+
+                $info['wp-database']['fields']['query_cache_size'] = array(
+                        'label' => __( 'Query cache size' ),
+                        'value' => self::get_mysql_var( 'query_cache_size' ),
+                );
+
                 // List must use plugins if there are any.
                 $mu_plugins = get_mu_plugins();
 
@@ -1445 +1460 @@
         }
 
         /**
+         * Returns the value of a MySQL variable.
+         *
+         * @since 5.9.0
+         *
+         * @param string $var Name of the MySQL variable.
+         * @return string|null The variable value on success. Null if the variable does not exist.
+         */
+        public static function get_mysql_var( $var ) {
+                global $wpdb;
+
+                $result = $wpdb->get_row(
+                        $wpdb->prepare( 'SHOW VARIABLES LIKE %s', $var ),
+                        ARRAY_A
+                );
+
+                if ( ! empty( $result ) && array_key_exists( 'Value', $result ) ) {
+                        return $result['Value'];
+                }
+
+                return null;
+        }
+
+        /**
          * Format the information gathered for debugging, in a manner suitable for copying to a forum or support ticket.
          *
          * @since 5.2.0