PHP无刷新上传文件实现代码

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我是靠谱客的博主无情小馒头，最近开发中收集的这篇文章主要介绍PHP无刷新上传文件实现代码，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

index.html

复制代码代码如下:

 
<html> 
<head> 
<title>无刷新上传文件</title> 
<meta Content-type="text/html" charset="utf-8" /> 
<script type="text/javascript"> 
function startUpload() { 
document.getElementById('processing').innerHTML = 'loding...'; 
return true; 
} 
function stopUpload(rel){ 
var msg; 
switch (rel) { 
case 0: 
msg = "上传成功"; 
break; 
case 1: 
msg = "上传的文件超过限制"; 
break; 
case 2: 
msg = "只能上传图片文件"; 
break; 
default: 
msg = "上传文件失败"; 
} 
document.getElementById('processing').innerHTML = msg; 
} 
</script> 
</head> 
<body> 
<div style="text-align:center"> 
<div id="processing"></div> 
<form action="upload.php" method="post" enctype="multipart/form-data" target="form-target" onsubmit="startUpload();"> 
<input type="hidden" name="MAX_FILE_SIZE" value="1000000" /> 
<input type="file" name="myfile" /> 
<input type="submit" name="sub" value="upload" /> 
</form> 
<iframe style="width:0; height:0; border:0;" name="form-target"></iframe> 
</div> 
</body> 
</html> 

upload.php

复制代码代码如下:

 
<?php 
sleep(2); 
$fileTypes = array('jpg','png','gif','bmp'); 
$result = null; 
$uploadDir = './upfiles'; 
$maxSize = 1 * pow(2,20); 
if ($_SERVER['REQUEST_METHOD'] == 'POST' && isset($_POST['sub'])) { 
$myfile = $_FILES['myfile']; 
$myfileType = substr($myfile['name'], strrpos($myfile['name'], ".") + 1); 
if ($myfile['size'] > $maxSize) { 
$result = 1; 
} else if (!in_array($myfileType, $fileTypes)) { 
$result = 2; 
} elseif (is_uploaded_file($myfile['tmp_name'])) { 
$toFile = $uploadDir . '/' . $myfile['name']; 
if (@move_uploaded_file($myfile['tmp_name'], $toFile)) { 
$result = 0; 
} else { 
$result = -1; 
} 
} else { 
$result = 1; 
} 
} 
?> 
<script type="text/javascript"> 
window.top.window.stopUpload(<?php echo $result; ?>); 
</script> 