Upload Image function

1<?PHP2     /**3 * File Upload4 * @param array $file file upload information (is an array with 5 elements)5 * @param array $allow The type of file upload allowed6 * @param string & $error reference passed to log error messages7 * Upload directory @param string $path file8 * @param int $maxsize = 1024*1024 Allow file Upload size9 * @param mixed false/$newname If the upload fails, return false, and the new name of the file will be returned successfully.Ten      */ One      A     functionUpload$file,$allow,&$error,$path,$maxsize=1048576){ -             Switch($file[' Error ']){ -                  Case1:$error= ' The uploaded file exceeds the value of the option limit! '; the                          return false; -                  Case2:$error= ' the size of the uploaded file exceeds the value specified by the option! '; -                          return false; -                  Case5 |$error= ' files are only partially uploaded! '; +                          return false; -                   Case4:$error= ' No file selected ' was uploaded! '; +                          return false; A                  Case6: at                  Case: W$error= ' File write failed, System busy! '; -                          return false; -                 } -  -             //determine the size of a file -             if($file[' Size '] >$maxsize){ in                 $error= ' File upload too big! '; -                 return false; to             } +  -             if(!In_array($file[' type '],$allow)){ the                 $error= ' File upload type does not exist, allow upload is type: '.implode(‘,‘,$allow); *                 return false; $             }Panax Notoginseng  -             $newname= Randname ($file[' Name ']); the             $target=$path. ‘/‘ .$newname; +             $result=Move_uploaded_file($file[' Tmp_name '],$target); A             if($result){ the                 return $newname; +}Else{ -                 $error= ' An unknown error occurred and the upload failed! ‘; $                 return false; $             } -         } -  the     /** - * Generate a random name function, file name = Current time plus random numberWuyi * @param string $filename file original name the * @return A new name for string $newname file -      */ Wu     functionRandname ($filename){ -         $newname=Date(' Ymdhis '); About         //random numbers that follow $         $str= "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; -          for($i= 0;$i< 6;$i++){ -             $newname.=$str[Mt_rand(0,strlen($str)-1)]; -         } A         $newname.=STRRCHR($filename,‘.‘); +         return $newname; the}

Upload Image function