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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 |
|---|---|
| 1027 | * Override the default video shortcode. |
| 1028 | * |
| 1029 | * @since 3.7.0 |
| 1030 | * |
| 1031 | * @param null Empty variable to be replaced with shortcode markup. |
| 1032 | * @param array $attr Attributes of the shortcode. |
| 1033 | * @param string $content Shortcode content. |
| 1034 | * @param int $instances Unique numeric ID of this video shortcode instance. |
| 1035 | */ |
| 1036 | $html = apply_filters( 'wp_video_shortcode_override', '', $attr, $content, $instances ); |
| 1037 | if ( '' !== $html ) |
| 1038 | return $html; |
| 1039 | |
| 1040 | $video = null; |
| 1041 | |
| 1042 | $default_types = wp_get_video_extensions(); |
| 1043 | $defaults_atts = array( |
| 1044 | 'src' => '', |
| 1045 | 'poster' => '', |