ob_start();
error_reporting(0);
<?xml version="1.0"?>
<oembed><code>rest_missing_callback_param</code><message>&#x645;&#x64F;&#x639;&#x627;&#x645;&#x644;&#x627;&#x62A; &#x645;&#x641;&#x642;&#x648;&#x62F;&#x629;: url</message><data><status>400</status><params><oembed>url</oembed></params></data></oembed>