php 上传文件 $_FILES['']['type']的值

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一个函数

function upload_file($fname,$ftype,$fsize,$ferror,$ftmp_name,$fpath){
date_default_timezone_set('PRC');
$store_nm = date("YmdHis") . "-" . rand(10000,99999) . "-". strlen($fname)."-$fname";
if($fname){
if ( ( ($ftype == "image/gif") || ($ftype == "image/jpeg")|| ($ftype == "image/pjpeg"))
&& ($fsize < 20000000) ){
if ($ferror > 0){
//echo "Error: " . $ferror . "
";
return 1;
}else{
/*
echo "Upload: " . $fname . "
";
echo "Type: " . $ftype . "
";
echo "Size: " . ($fsize / 1024) . " Kb
";
echo "Stored in: $fpath/$store_nm-$fname";
*/
move_uploaded_file($ftmp_name,"$fpath/$store_nm");
return $store_nm;
}
}else{
//echo "Invalid file";
return 2;
}
}else {
//echo "no file";
return 3;
}
}