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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 |
|---|---|
| 1065 | /** |
| 1066 | * Determines if default embed handlers should be loaded. |
| 1067 | * |
| 1068 | * Checks to make sure that the embeds library hasn't already been loaded. If |
| 1069 | * it hasn't, then it will load the embeds library. |
| 1070 | * |
| 1071 | * @since 2.9.0 |
| 1072 | */ |
| 1073 | function wp_maybe_load_embeds() { |
| 1074 | if ( ! apply_filters( 'load_default_embeds', true ) ) |
| 1075 | return; |
| 1076 | wp_embed_register_handler( 'googlevideo', '#http://video\.google\.([A-Za-z.]{2,5})/videoplay\?docid=([\d-]+)(.*?)#i', 'wp_embed_handler_googlevideo' ); |
| 1077 | } |
| 1078 | |
| 1079 | /** |
| 1080 | * The Google Video embed handler callback. Google Video does not support oEmbed. |
| 1081 | * |
| 1082 | * @see WP_Embed::register_handler() |
| 1083 | * @see WP_Embed::shortcode() |