파일 업로드 에러 유형

UPLOAD_ERR_OK

Value: 0; There is no error, the file uploaded with success.

UPLOAD_ERR_INI_SIZE

Value: 1; The uploaded file exceeds the upload_max_filesize directive in php.ini.

UPLOAD_ERR_FORM_SIZE

Value: 2; The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form.

UPLOAD_ERR_PARTIAL

Value: 3; The uploaded file was only partially uploaded.

UPLOAD_ERR_NO_FILE

Value: 4; No file was uploaded.

UPLOAD_ERR_NO_TMP_DIR

Value: 6; Missing a temporary folder. Introduced in PHP 4.3.10 and PHP 5.0.3.

UPLOAD_ERR_CANT_WRITE

Value: 7; Failed to write file to disk. Introduced in PHP 5.1.0.

UPLOAD_ERR_EXTENSION

Value: 8; A PHP extension stopped the file upload. PHP does not provide a way to ascertain which extension caused the file upload to stop; examining the list of loaded extensions with phpinfo() may help. Introduced in PHP 5.2.0.

출처 : http://www.php.net/manual/en/features.file-upload.errors.php