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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 |
---|---|
1747 | * @since 3.6.0 |
1748 | * |
1749 | * @see wp_video_shortcode() |
1750 | * |
1751 | * @param string $html Empty variable to be replaced with shortcode markup. |
1752 | * @param array $attr Attributes of the video shortcode. |
1753 | * @param string $content Video shortcode content. |
1754 | * @param int $instance Unique numeric ID of this video shortcode instance. |
1755 | */ |
1756 | $override = apply_filters( 'wp_video_shortcode_override', '', $attr, $content, $instance ); |
1757 | if ( '' !== $override ) { |
1758 | return $override; |
1759 | } |
1760 |
|
1761 | $video = null; |
1762 |
|
1763 | $default_types = wp_get_video_extensions(); |
1764 | $defaults_atts = array( |
1765 | 'src' => '', |