php上传文件的增强函数
表单中file对象,比如说$_FILES['doc'],$path为保存的路径,$type为限制上传的类型(他是一个数组,比如说限制上传doc和docx和格式,那这个参数可以填array(“doc”,”.docx”),而且扩展名前有无”.”不作要求)。
复制代码 代码如下:
function upload($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,‘/‘)) $path .= "/";
}
//为类型加上开头“.”
//将所有类型合成字符串,用"/"连接起来
foreach($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;
}
}
}
?>
返回值为一数组
$key value
error 错误详情
errorid 错误id(出现错误才有值)
type 文件扩展名(扩展名前带“.”)
upname 上传的文件名
time 上传的时间(从 Unix 纪元(1970-01-01 00:00)开始至今的秒数)
错误类型
errorid error
false //上传成功
1 上传失败,文件大小超出了服务器的空间大小!
2 上传失败,要上传的文件大小超出浏览器限制!
3 上传失败,文件仅部分被上传!
4 上传失败,没有找到要上传的文件!
5 上传失败,服务器临时文件夹丢失!
6 上传失败,文件写入到临时文件夹出错!
8 没有上传该类型文件! //表单中file对象为空
10 上传失败,位置错误!

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