我正在为其中一个网站使用wordpress 3.9.1。我的反应很慢，大约35秒。我做了调查；发现wp_head 花费了太多时间。此外，我调试；发现wp中的函数包含/插件。php导致了：

function do_action($tag, $arg = \'\') {
    global $wp_filter, $wp_actions, $merged_filters, $wp_current_filter;

    if ( ! isset($wp_actions[$tag]) )
        $wp_actions[$tag] = 1;
    else
        ++$wp_actions[$tag];

    // Do \'all\' actions first
    if ( isset($wp_filter[\'all\']) ) {
        $wp_current_filter[] = $tag;
        $all_args = func_get_args();
        _wp_call_all_hook($all_args);
    }

    if ( !isset($wp_filter[$tag]) ) {
        if ( isset($wp_filter[\'all\']) )
            array_pop($wp_current_filter);
        return;
    }

    if ( !isset($wp_filter[\'all\']) )
        $wp_current_filter[] = $tag;

    $args = array();
    if ( is_array($arg) && 1 == count($arg) && isset($arg[0]) && is_object($arg[0]) ) // array(&$this)
        $args[] =& $arg[0];
    else
        $args[] = $arg;
    for ( $a = 2; $a < func_num_args(); $a++ )
        $args[] = func_get_arg($a);

    // Sort
    if ( !isset( $merged_filters[ $tag ] ) ) {
        ksort($wp_filter[$tag]);
        $merged_filters[ $tag ] = true;
    }

    reset( $wp_filter[ $tag ] );
   ///////////////////// PROBLEM STARTS FROM HERE //////////////////
    do {
        foreach ( (array) current($wp_filter[$tag]) as $the_ )
            if ( !is_null($the_[\'function\']) )
            {
                call_user_func_array($the_[\'function\'], array_slice($args, 0, (int) $the_[\'accepted_args\']));
            }
    } while ( next($wp_filter[$tag]) !== false );
////////////////////////// PROBLEM AREA ENDS HERE ///////////////////

    array_pop($wp_current_filter);
}