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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 |
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2439 | * @since 3.6.0 |
2440 | * |
2441 | * @see wp_video_shortcode() |
2442 | * |
2443 | * @param string $html Empty variable to be replaced with shortcode markup. |
2444 | * @param array $attr Attributes of the video shortcode. |
2445 | * @param string $content Video shortcode content. |
2446 | * @param int $instance Unique numeric ID of this video shortcode instance. |
2447 | */ |
2448 | $override = apply_filters( 'wp_video_shortcode_override', '', $attr, $content, $instance ); |
2449 | if ( '' !== $override ) { |
2450 | return $override; |
2451 | } |
2452 |
|
2453 | $video = null; |
2454 |
|
2455 | $default_types = wp_get_video_extensions(); |
2456 | $defaults_atts = array( |
2457 | 'src' => '', |