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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 |
|---|---|
| 22 | function wp_embed_handler_googlevideo( $matches, $attr, $url, $rawattr ) { |
| 23 | // If the user supplied a fixed width AND height, use it |
| 24 | if ( !empty($rawattr['width']) && !empty($rawattr['height']) ) { |
| 25 | $width = (int) $rawattr['width']; |
| 26 | $height = (int) $rawattr['height']; |
| 27 | } else { |
| 28 | list( $width, $height ) = wp_expand_dimensions( 425, 344, $attr['width'], $attr['height'] ); |
| 29 | } |
| 30 | |
| 31 | return apply_filters( 'embed_googlevideo', '<embed type="application/x-shockwave-flash" src="http://video.google.com/googleplayer.swf?docid=' . esc_attr($matches[2]) . '&hl=en&fs=true" style="width:' . esc_attr($width) . 'px;height:' . esc_attr($height) . 'px" allowFullScreen="true" allowScriptAccess="always"></embed>', $matches, $attr, $url, $rawattr ); |
| 32 | } |
| 33 | wp_embed_register_handler( 'googlevideo', '#http://video\.google\.([A-Za-z.]{2,5})/videoplay\?docid=([\d-]+)(.*?)#i', 'wp_embed_handler_googlevideo' ); |
| 34 | |
| 35 | /** |
| 36 | * The PollDaddy.com embed handler callback. PollDaddy does not support oEmbed, at least not yet. |
| 37 | * |
| 38 | * @see WP_Embed::register_handler() |
| 39 | * @see WP_Embed::shortcode() |
| 40 | * |