各位php高手帮我看看这段代码是什么意思
<br />function apply_filters($tag, $value) {<br /> global $wp_filter, $merged_filters, $wp_cur<a>本2文来*源gao($daima.com搞@代@#码(网</a><strong>搞gaodaima代码</strong>rent_filter;<br /><br /> $args = array();<br /><br /> if ( isset($wp_filter['all']) ) {<br /> $wp_current_filter[] = $tag;<br /> $args = func_get_args();<br /> _wp_call_all_hook($args);<br /> }<br /><br /> if ( !isset($wp_filter[$tag]) ) {<br /> if ( isset($wp_filter['all']) )<br /> array_pop($wp_current_filter);<br /> return $value;<br /> }<br /><br /> if ( !isset($wp_filter['all']) )<br /> $wp_current_filter[] = $tag;<br /><br /> if ( !isset( $merged_filters[ $tag ] ) ) {<br /> ksort($wp_filter[$tag]);<br /> $merged_filters[ $tag ] = true;<br /> }<br /><br /> reset( $wp_filter[ $tag ] );<br /><br /> if ( empty($args) )<br /> $args = func_get_args();<br /><br /> do {<br /> foreach( (array) current($wp_filter[$tag]) as $the_ )<br /> if ( !is_null($the_['function']) ){<br /> $args[1] = $value;<br /> $value = call_user_func_array($the_['function'], array_slice($args, 1, (int) $the_['accepted_args']));<br /> }<br /><br /> } while ( next($wp_filter[$tag]) !== false );<br /><br /> array_pop( $wp_current_filter );<br /><br /> return $value;<br />}<br />
<br />function the_permalink() {<br /> echo apply_filters('the_permalink', get_permalink());<br />}<br />