How to modify avatar in php?

How to modify the avatar in php: first click on the avatar picture; then in the pop-up selection window, select one of them and the window will launch the avatar change. The code is [].

php method to modify the avatar:

First click on the avatar picture, a selection window will pop up, select one of them and the window Introducing avatar replacement.

Effect:

Main page code:

<tr>
    <td>头像：</td>
    
    <td><input type="hidden" name="face" value=""/>
    <img src="./face/m01.gif" alt="头像" class="face" id=&#39;faceimg&#39; onclick="javascript:window.open(&#39;face.php&#39;,&#39;face&#39;,&#39;width=420,height=600,top=0,left=0,scrollbars=1&#39;);"/></td>
</tr>

Sub-page code (pop-up form page):

    <!-- 使用遍历文件夹函数，获取头像 -->
    <?php $facearray = _myreaddir(dirname(__FILE__)."/face"); ?>

    <div id="face">
        <h3>请选择头像：</h3>
        
            <?php foreach ($facearray as $num){
                    echo "<img src=&#39;face/".$num."&#39; alt=&#39;face/".$num."&#39; title=&#39;".$num."&#39;/>";
            }?>
    </div>

JS code used:

Quote:

    <!-- 点击更换头像 -->
    <script type="text/javascript" src="./js/face.js"></script>

Code:

window.onload =  function() {
    //获取face.php页面中的头像对象
    var img = document.getElementsByTagName('img');
    //进行循环
    for(i=0;i<img.length;i++){
        //对选择的对象触发点击事件
        img[i].onclick = function (){
            //调用 _opener()函数
            _opener(this.alt);
        };
    }
}
//显示头像函数
function _opener(src){
    //获取父页面头像对象
    var faceimg = opener.document.getElementById(&#39;faceimg&#39;);
    //将头像的img更换
    faceimg.src = src;
    //将父页面中的register表单中的name为face的值更改为src。
    opener.document.register.face.value = src;
}

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