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php实现头像上传预览功能
简介本文实例为大家分享了php实现头像上传预览功能的具体代码，供大家参考，具体内容如下主页面1.php上传头像</tit</div>
<div class="news_infos"><div id="MyContent"><p>本文实例为大家分享了php实现头像上传预览功能的具体代码，供大家参考，具体内容如下</p>
<p>主页面1.php</p>
<p></p>
<div class="htmlcode">
<pre class="brush:xhtml;">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>上传头像</title>
<style type="text/css">
*{
font-family:"微软雅黑";}
#zong{
/*border:1px solid black;*/
position:relative;
width:52%;
height:500x;
left:24%}
.nr{
float:left;
margin-right:30px;}
#yl{width:240px; height:240px; background-size:240px 240px;}
#file{width:240px; height:240px; float:left; opacity:0;}
</style>
</head>
<body>
<div id="zong">
<form id="sc" action="2.php" method="post" enctype="multipart/form-data" target="shangchuan">
<input type="hidden" name="tp" value="" id="tp" />
<div id="yl" style="background-image:url(./image/1.jpg)" class="nr">//头像显示的位置
<input type="file" name="file" id="file" onchange="document.getElementById('sc').submit()" />
</div>
<div class="nr">
</div>
</form>
<iframe style="display:none" name="shangchuan" id="shangchuan">
</iframe>
</div>
</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 div = document.getElementById("yl");
div.style.backgroundImage = "url("+url+")";
document.getElementById("tp").value = url;
}
</script>
</html>
</pre>
</div>
<p>处理页面2.php</p>
<p></p>
<div class="htmlcode">
<pre class="brush:php;">
<"uid"];
if($_FILES["file"]["error"])
{
echo $_FILES["file"]["error"];
}
else
{
if(($_FILES["file"]["type"]=="image/jpeg" || $_FILES["file"]["type"]=="image/png")&& $_FILES["file"]["size"]<1024000)
{
$fname = "./a/image/".date("YmdHis").$_FILES["file"]["name"]; //头像存储的路径
$filename = iconv("UTF-8","gb2312",$fname);
if(file_exists($filename))
{
echo "<script>alert('该文件已存在！');</script>";
}
else
{
move_uploaded_file($_FILES["file"]["tmp_name"],$filename);
unlink($_POST["tp"]);
echo "<script>parent.showimg('{$fname}');</script>";
}
}
}
</pre>
</div>
<p>打开显示:</p>
<p><a href="javascript:;" onclick="showimg('/UploadFiles/2021-04-02/2017042716560651.png');"><img src="/UploadFiles/2021-04-02/2017042716560651.png" alt="php实现头像上传预览功能" onmousewheel="return bbimg(this)" onload="javascript:resizepic(this)" border="0"/></a></p>
<p>点击图片位置弹出选择框：</p>
<p><a href="javascript:;" onclick="showimg('/UploadFiles/2021-04-02/2017042716560652.png');"><img src="/UploadFiles/2021-04-02/2017042716560652.png" alt="php实现头像上传预览功能" onmousewheel="return bbimg(this)" onload="javascript:resizepic(this)" border="0"/></a></p>
<p>选择图片完成后：</p>
<p><a href="javascript:;" onclick="showimg('/UploadFiles/2021-04-02/2017042716560753.png');"><img src="/UploadFiles/2021-04-02/2017042716560753.png" alt="php实现头像上传预览功能" onmousewheel="return bbimg(this)" onload="javascript:resizepic(this)" border="0"/></a></p>
<p>以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。</p></div>
</div>
</div>
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<p>下一篇：<a href="http://m.paidiu.com/show/1/142733.html" title="php文件上传及下载附带显示文件及目录功能">php文件上传及下载附带显示文件及目录功能</a></p>
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