<pre><code class="language-markup"><script><h1 class="foo">Heading 1</h1>
<h2>Heading 2</h2>
<h3>Heading 3</h3>
<h4>Heading 4</h4>
<h5>Heading 5</h5>
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<pre data-line="9"><code class="language-php">add_filter( 'manage_media_columns', 'sk_media_columns_url' );
/**
 * Filter the Media list table columns to add a URL column.
 *
 * @param array $posts_columns Existing array of columns displayed in the Media list table.
 * @return array Amended array of columns to be displayed in the Media list table.
 */
function sk_media_columns_url( $posts_columns ) {
	$posts_columns['media_url'] = 'URL';
	return $posts_columns;
}</code></pre>