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头像上传预览

2018-06-22 05:16:47来源：未知阅读 ()

主页面1.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>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>

处理页面2.php

<?php
session_start();
$uid = $_SESSION["uid"];
if($_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>";
        }
        
    }
}