Multiple file upload - PHP

Multiple file upload - PHP

define('ROOT','D:/Program Files/www/test/');
class Files_Tool{
 protected static $allowExt=array('.jpg','.jpeg' ,'.png','.gif','.bmp','.svg','.chm','.pdf','.zip','.rar','.tar','.gz' ,'.bzip2','.ppt','.doc');
 public static $wrong=array();
 public static $path=array();
 protected static $error=array(
 0=> 'File upload failed, no error occurred, file upload was successful',
 1=>'File upload failed, the uploaded file exceeded the value limited by the upload_max_filesize option in php.ini',
 2=>'File upload failed, The size of the uploaded file exceeds the value specified by the MAX_FILE_SIZE option in the HTML form',
 3=>'File upload failed, only part of the file was uploaded',
 4=>'File upload failed, no file was uploaded',
 5=>'File upload failed, suffix not allowed',
 6=>'File upload failed, temporary folder not found. Introduced in PHP 4.3.10 and PHP 5.0.3',
 7=>' File upload failed, file writing failed. Introduced in PHP 5.1.0',
 8=>'File upload failed, the name of the form field was not received',
 9=>'File upload failed,,error unknown'
 );

 public static function upload($name){
 //Check whether the NAME of the form field is received
 if(!isset($_FILES[$name])){
 self::$wrong[]=8;
 return false;
 }
 //3D array is simplified into 2D array
 $files=array_shift($_FILES);
 //Get the suffix
 $files=self::get_Ext($files);
 //Process files Number of times
 $n=count($files['name']);
 for($i=0;$i<$n;$i++){
 //Check whether the current file has an error message, if so, skip the current one file, process the next file
 if($files['error'][$i]!=0){
 self::$wrong[$i+1]=$files['error'][$i];
 continue;
 }
 //Check the suffix of the current file, whether it is allowed, if not, skip the current file
 if(!in_array($files['name'][$i],self::$allowExt)) {
 self::$wrong[$i+1]=5;
 continue;
 }
 //Path
 $dir=self::time_Dir();
 //File name
 $name=self::rand_Name( );
 //Suffix
 $ext=$files['name'][$i];
 //File location
 $path=$dir.$name.$ext;
 //Move temporary files, if failed, Skip the current file
 if(!move_uploaded_file($files['tmp_name'][$i],$path)){
 self::$wrong[$i]=9;
 continue;
 }
 //Save Path
 self::$path[$i+1]=strtr($path,array(ROOT=>''));

 }
 return self::$path;
 }

 //Get the suffix Method
 protected static function get_Ext($arr){
 if(!is_array($arr) || !isset($arr['name'])){return false;}
 foreach($arr['name'] as $k=>$v){
 $arr['name'][$k]=strtolower(strrchr($v,'.'));
 }
 return $arr;
 }
 //Generate by date Path
 protected static function time_Dir(){
 $dir=ROOT.'Data/images/'.date('Y/m/d/',time());
 if(!is_dir($dir)){
 mkdir($dir,0777,true);
 }
 return $dir;
 }
 //Generate a random file name
 protected static function rand_Name(){
 $str=str_shuffle('1234567890qwertyuiopasdfghjklzxcvbnm');
 $str=substr ($str,0,6);
 return $str;
 }
 //Error interface
 public static function errors(){
 foreach(self::$wrong as $k=>$v){
 self: :$wrong[$k]='th'.$k.'th'.self::$error[$k];
 }
 return self::$wrong;
 }

}