<?php 

/**
 * 自定义函数文件
 */

function dr_content_tags($content, $keywords, $mid = MOD_DIR, $num = 1, $blank = true){
if($keywords){
    foreach ($keywords as $i => $t) {
        $name = $t['name'];
        $url = dr_tags_url($i);

        if (!$url) {
            $url = dr_search_url(null, 'keyword', $name, $mid);
        }
        if ($blank) {
            $url = '<a href="'.$url.'" target="_blank">'.$name.'</a>';
        } else {
            $url = '<a href="'.$url.'">'.$name.'</a>';
        }
        $preg = "/(?!<[^>]*)(".preg_quote($name, '/').")(?![^<]*>)/siU";
        $content = $num ? @preg_replace($preg, $url, $content, $num) : @preg_replace($preg, $url, $content);
    }
}
    return $content;

}