php上传文件增强函数用法示例

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代码如下:

 
<?php 
function upload($file,$path,$type){ 
$state = array(); 
$state['error'] = "true"; 
$alltype = ""; // 所有可以上传的类型，用"/"连接起来 
$path = trim($path); 
//为$path末尾加上"/" 
if(strlen(strrchr($path,‘/‘)) <= 1){ 
$path .= "/"; 
} 
//为类型加上开头“.” 
//将所有类型合成字符串，用"/"连接起来<span id="more-78"></span> 
foreach($type as $key=>$typeone){ 
$type[$key] = $typeone = trim($typeone); 
if(strlen(strchr($typeone,".")) != strlen($typeone)){ 
$type[$key] = ".".$typeone;} 
$alltype .= $typeone.‘/‘; 
} 
$alltype = substr($alltype,0,strlen($alltype)-1); //去掉最后的“/” 
if(empty($file['name'])){ 
$state['error'] = "没有上传{$alltype}类型文件！"; 
$state['errorid'] = 8; 
return $state; 
} else { 
if (!$file['error']) { 
$state['name'] = $file['name']; 
$state['type'] = strrchr($state['name'],‘.‘); 
if(in_array($state['type'],$type)){ 
$time = date("U"); 
$state['upname'] = $time.rand(1000,9999).$state['type']; //文件命名 
if(copy($file['tmp_name'],$path.$state['upname'])){ 
$state['time'] = date("U"); //上传的时间 
$state['error'] = false; 
return $state; 
} else { 
switch($file(‘error‘)){ 
case 1: $state['error'] = $state['name']."上传失败，文件大小超出了服务器的空间大小！";$state['errorid'] = 1;return $state; 
case 2: $state['error'] = $state['name']."上传失败，要上传的文件大小超出浏览器限制！";$state['errorid'] = 2;return $state; 
case 3: $state['error'] = $state['name']."上传失败，文件仅部分被上传！";$state['errorid'] = 3;return $state; 
case 4: $state['error'] = $state['name']."上传失败，没有找到要上传的文件！";$state['errorid'] = 4;return $state; 
case 5: $state['error'] = $state['name']."上传失败，服务器临时文件夹丢失！";$state['errorid'] = 5;return $state; 
case 6: $state['error'] = $state['name']."上传失败，文件写入到临时文件夹出错！";$state['errorid'] = 6;return $state; 
default: $state['error'] = $state['name']."上传失败，位置错误！";$state['errorid'] = 10;return $state; 
} 
} 
} else { 
$state['error'] = $state['name']."上传失败！不符合所要上传的文件类型！({$alltype})"; 
$state['errorid'] = 10; 
return $state; 
} 
} 
} 
?> 

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