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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 |
|---|---|
| 1577 | } |
| 1578 | |
| 1579 | /** |
| 1580 | * Filters the header video URL. |
| 1581 | * |
| 1582 | * @since 4.7.3 |
| 1583 | * |
| 1584 | * @param string $url Header video URL, if available. |
| 1585 | */ |
| 1586 | $url = apply_filters( 'get_header_video_url', $url ); |
| 1587 | |
| 1588 | if ( ! $id && ! $url ) { |
| 1589 | return false; |
| 1590 | } |
| 1591 | |
| 1592 | return esc_url_raw( set_url_scheme( $url ) ); |
| 1593 | } |
| 1594 | |
| 1595 | /** |