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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 |
|---|---|
| 3281 | * @since 3.6.0 |
| 3282 | * |
| 3283 | * @see wp_video_shortcode() |
| 3284 | * |
| 3285 | * @param string $html Empty variable to be replaced with shortcode markup. |
| 3286 | * @param array $attr Attributes of the shortcode. @see wp_video_shortcode() |
| 3287 | * @param string $content Video shortcode content. |
| 3288 | * @param int $instance Unique numeric ID of this video shortcode instance. |
| 3289 | */ |
| 3290 | $override = apply_filters( 'wp_video_shortcode_override', '', $attr, $content, $instance ); |
| 3291 | |
| 3292 | if ( '' !== $override ) { |
| 3293 | return $override; |
| 3294 | } |
| 3295 | |
| 3296 | $video = null; |
| 3297 | |
| 3298 | $default_types = wp_get_video_extensions(); |
| 3299 | $defaults_atts = array( |