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

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，首先修改/include/extend.func.php，里面的把这段代码加进去：

//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");        //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;        }

然后在我们需要调用织梦文章内容的地方加上调用代码：

{dede:field.body function='replaceurl(@me)'/}

由于之前在《织梦如何去除img图片中的style width height属性》一文中，实现去高宽属性，既然我们今天用自定义函数实现了替换alt属性，那么也可以把去高宽属性的这个功能加进去，完整代码如下：

//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;     }