时间:2021-07-01 10:21:17 帮助过:4人阅读
上一篇博客是上传功能,本篇是上传后图片预览和更改:
代码如下:
1.yulan.php
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="http://www.w3.org/1999/xhtml">
- <head>
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
- <title>无标题文档</title>
- <style type="text/css">
- #yl{ width:200px; height:300px; background-image:url(images/timg1.jpg); background-size:200px 300px;}
- #file{ width:200px; height:300px; float:left; opacity:0;}
- </style>
- </head>
- <body>
- <form id="sc" action="ylchuli.php" method="post" enctype="multipart/form-data" target="shangchuan">
- <input type="hidden" name="tp" value="" id="tp" />
- <p id="yl">
- <input type="file" name="file" id="file" onchange="document.getElementById('sc').submit()" />
- </p>
- </form>
- <iframe style="display:none" name="shangchuan" id="shangchuan">
- </iframe>
- </body>
- <script type="text/javascript">
- //回调函数,调用该方法传一个文件路径,改变背景图
- function showimg(url)
- {
- var p = document.getElementById("yl");
- p.style.backgroundImage = "url("+url+")";
- document.getElementById("tp").value = url;
- }
- </script>
- </html>
2.ylchuli.php
- <?php
- if($_FILES["file"]["error"])
- {
- echo $_FILES["file"]["error"];
- }
- else
- {
- if(($_FILES["file"]["type"]=="image/jpeg" || $_FILES["file"]["type"]=="image/png")&& $_FILES["file"]["size"]<1024000)
- {
- $fname = "./images/".date("YmdHis").$_FILES["file"]["name"];
- $filename = iconv("UTF-8","gb2312",$fname);
- if(file_exists($filename))
- {
- echo "<script>alert('该文件已存在!');</script>";
- }
- else
- {
- move_uploaded_file($_FILES["file"]["tmp_name"],$filename);
- $delurl = iconv("UTF-8","gb2312",$_POST["tp"]);
- unlink($delurl); //删除文件
- echo "<script>parent.showimg('{$fname}');</script>";
- }
- }
- }
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