Ticket #23017: 23017-set-error-handler.diff

wp-includes/class-wp-xmlrpc-server.php

@@ -33 +33 @@
          * @return wp_xmlrpc_server
          */
         function __construct() {
+                if ( ! WP_DEBUG ) {
+                        set_error_handler( array( $this, 'handle_nonfatal_errors' ), E_WARNING | E_NOTICE | E_USER_WARNING | E_USER_NOTICE | E_STRICT | E_RECOVERABLE_ERROR | E_DEPRECATED | E_USER_DEPRECATED );
+                }
                 $this->methods = array(
                         // WordPress API
                         'wp.getUsersBlogs'              => 'this:wp_getUsersBlogs',
@@ -5496 +5499 @@
 
                 return $pingbacks;
         }
+        // handler ( int $errno , string $errstr [, string $errfile [, int $errline [, array $errcontext ]]] )
+        function handle_nonfatal_errors( $errno, $errstr, $errfile = nil, $errline = nil, $errcontext = nil ){
+                // Swallow non-fatal errors to prevent invalid XML
+                return true;
+        }
 }