织梦在PHP7.0环境中为文章图片自动添加ALT属性为标题方法

//文章body优化替换
    function replaceurl($newurl)
     {
    global $dsql,$id;
    //获取图片附加表imgurls字段内容进行处
    $row = $dsql->GetOne("SELECT title FROM dede_archives where id=$id");
    //去掉img的width和height
    $newurl=preg_replace('/style=\"width\:(.*)\"/','',$newurl);
    //替换图片Alt为文档标题
    $newurl=str_ireplace(array('alt=""','alt=\'\''),'',$newurl);
    $newurl=preg_replace("@ [\s]{0,}alt[\s]{0,}=[\"'\s]{0,}[\s\S]{0,}[\"'\s] @isU"," ",$newurl);
    $newurl=str_ireplace("<img " ,"<img  alt=\"".$row['title']."\"",$newurl);
    //去掉结尾空格
    $newurl=str_ireplace(" /","/",$newurl);
    $newurl=str_ireplace(" />","/>",$newurl);
    return $newurl;
     }