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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1790 | |
| 1791 | foreach ( $custom_fields as $key => $val ) { |
| 1792 | if ( 'enclosure' != $key || !is_array( $val ) ) |
| 1793 | continue; |
| 1794 | foreach( $val as $enc ) { |
| 1795 | $enclosure = split( "\n", $enc ); |
| 1796 | $pung[] = trim( $enclosure[ 0 ] ); |
| 1797 | } |
| 1798 | } |
| 1799 | $pung = apply_filters('get_enclosed', $pung); |
| 1800 | return $pung; |
| 1801 | } |
| 1802 | |
| 1803 | /** |
| 1804 | * Retrieve URLs already pinged for a post. |
| 1805 | * |
| 1806 | * @since 1.5.0 |
| 1807 | * @uses $wpdb |
| 1808 | * |