1.前台页面：
iframe_upload.html
<html> <body> <form action="upload.php" id="form1" name="form1" encType="multipart/form-data" method="post" target="hidden_frame" > <input type="file" id="file" name="file" style="450"> <INPUT type="submit" value="上传文件"><span><img src="" id="msg"></span> </form> <iframe name='hidden_frame' id="hidden_frame" style="display:none;"></iframe> <span class="hilite2"></span> </body> </html> <script type="text/javascript"> function callback(msg) { document.getElementById("msg").src = msg; } </script>
2.php处理端
upload.php
<?php //print_r($_FILES);
//处理过程省略，主要是展示回调js函数进行处理
$pic = 'images/100.jpg'; echo "<script>parent.callback('".$pic."')</script>"; ?>