Php file operation error
PHP returns an appropriate error code along with the file array. The error code can be found in the error segment of the file array that is created during the file upload by PHP. In other words, the error might be found in $_FILES[‘userfile’][‘error’] .
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.
UPLOAD_ERR_CANT_WRITE
Value: 7; Failed to write file to disk.
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.
User Contributed Notes 23 notes
Update to Adams old comment.
This is probably useful to someone.
$phpFileUploadErrors = array(
0 => ‘There is no error, the file uploaded with success’ ,
1 => ‘The uploaded file exceeds the upload_max_filesize directive in php.ini’ ,
2 => ‘The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form’ ,
3 => ‘The uploaded file was only partially uploaded’ ,
4 => ‘No file was uploaded’ ,
6 => ‘Missing a temporary folder’ ,
7 => ‘Failed to write file to disk.’ ,
8 => ‘A PHP extension stopped the file upload.’ ,
);
This is a handy exception to use when handling upload errors:
class UploadException extends Exception
<
public function __construct ( $code ) <
$message = $this -> codeToMessage ( $code );
parent :: __construct ( $message , $code );
>
private function codeToMessage ( $code )
<
switch ( $code ) <
case UPLOAD_ERR_INI_SIZE :
$message = «The uploaded file exceeds the upload_max_filesize directive in php.ini» ;
break;
case UPLOAD_ERR_FORM_SIZE :
$message = «The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form» ;
break;
case UPLOAD_ERR_PARTIAL :
$message = «The uploaded file was only partially uploaded» ;
break;
case UPLOAD_ERR_NO_FILE :
$message = «No file was uploaded» ;
break;
case UPLOAD_ERR_NO_TMP_DIR :
$message = «Missing a temporary folder» ;
break;
case UPLOAD_ERR_CANT_WRITE :
$message = «Failed to write file to disk» ;
break;
case UPLOAD_ERR_EXTENSION :
$message = «File upload stopped by extension» ;
break;
default:
$message = «Unknown upload error» ;
break;
>
return $message ;
>
>
// Use
if ( $_FILES [ ‘file’ ][ ‘error’ ] === UPLOAD_ERR_OK ) <
//uploading successfully done
> else <
throw new UploadException ( $_FILES [ ‘file’ ][ ‘error’ ]);
>
?>
if post is greater than post_max_size set in php.ini
$_FILES and $_POST will return empty
This is probably useful to someone.
array(
0 => «There is no error, the file uploaded with success» ,
1 => «The uploaded file exceeds the upload_max_filesize directive in php.ini» ,
2 => «The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form»
3 => «The uploaded file was only partially uploaded» ,
4 => «No file was uploaded» ,
6 => «Missing a temporary folder»
);
?>
I have expanded @adam at gotlinux dot us’s example a bit with proper UPLOAD_FOO constants and gettext support. Also UPLOAD_ERR_EXTENSION is added (was missing in his version). Hope this helps someone.
class Some /**
* Upload error codes
* @var array
*/
private static $upload_errors = [];
public function __construct () // Init upload errors
self :: $upload_errors = [
UPLOAD_ERR_OK => _ ( ‘There is no error, the file uploaded with success.’ ),
UPLOAD_ERR_INI_SIZE => _ ( ‘The uploaded file exceeds the upload_max_filesize directive in php.ini.’ ),
UPLOAD_ERR_FORM_SIZE => _ ( ‘The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form.’ ),
UPLOAD_ERR_PARTIAL => _ ( ‘The uploaded file was only partially uploaded.’ ),
UPLOAD_ERR_NO_FILE => _ ( ‘No file was uploaded.’ ),
UPLOAD_ERR_NO_TMP_DIR => _ ( ‘Missing a temporary folder.’ ),
UPLOAD_ERR_CANT_WRITE => _ ( ‘Cannot write to target directory. Please fix CHMOD.’ ),
UPLOAD_ERR_EXTENSION => _ ( ‘A PHP extension stopped the file upload.’ ),
];
>
>
?>
Clarification on the MAX_FILE_SIZE hidden form field and the UPLOAD_ERR_FORM_SIZE error code:
PHP has the somewhat strange feature of checking multiple «maximum file sizes».
The two widely known limits are the php.ini settings «post_max_size» and «upload_max_size», which in combination impose a hard limit on the maximum amount of data that can be received.
In addition to this PHP somehow got implemented a soft limit feature. It checks the existance of a form field names «max_file_size» (upper case is also OK), which should contain an integer with the maximum number of bytes allowed. If the uploaded file is bigger than the integer in this field, PHP disallows this upload and presents an error code in the $_FILES-Array.
The PHP documentation also makes (or made — see bug #40387 — http://bugs.php.net/bug.php?id=40387) vague references to «allows browsers to check the file size before uploading». This, however, is not true and has never been. Up til today there has never been a RFC proposing the usage of such named form field, nor has there been a browser actually checking its existance or content, or preventing anything. The PHP documentation implies that a browser may alert the user that his upload is too big — this is simply wrong.
Please note that using this PHP feature is not a good idea. A form field can easily be changed by the client. If you have to check the size of a file, do it conventionally within your script, using a script-defined integer, not an arbitrary number you got from the HTTP client (which always must be mistrusted from a security standpoint).
When uploading a file, it is common to visit the php.ini and set up upload_tmp_dir = /temp but in the case of some web hostess as fatcow you need to direct not only /tmp but upload_tmp_dir = /hermes/walnaweb13a/b345/moo.youruser/tmp
If not the $_FILES show you an error #6 «Missing a temporary folder
UPLOAD_ERR_PARTIAL is given when the mime boundary is not found after the file data. A possibly cause for this is that the upload was cancelled by the user (pressed ESC, etc).
One thing that is annoying is that the way these constant values are handled requires processing no error with the equality, which wastes a little bit of space. Even though «no error» is 0, which typically evaluates to «false» in an if statement, it will always evaluate to true in this context.
So, instead of this:
——
if( $_FILES [ ‘userfile’ ][ ‘error’ ]) <
// handle the error
> else <
// process
>
?>
——
You have to do this:
——
if( $_FILES [ ‘userfile’ ][ ‘error’ ]== 0 ) <
// process
> else <
// handle the error
>
?>
——
Also, ctype_digit fails, but is_int works. If you’re wondering. no, it doesn’t make any sense.
You ask the question: Why make stuff complicated when you can make it easy? I ask the same question since the version of the code you / Anonymous / Thalent (per danbrown) have posted is unnecessary overhead and would result in a function call, as well as a potentially lengthy switch statement. In a loop, that would be deadly. try this instead:
——
$error_types = array(
1 => ‘The uploaded file exceeds the upload_max_filesize directive in php.ini.’ ,
‘The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form.’ ,
‘The uploaded file was only partially uploaded.’ ,
‘No file was uploaded.’ ,
6 => ‘Missing a temporary folder.’ ,
‘Failed to write file to disk.’ ,
‘A PHP extension stopped the file upload.’
);
// Outside a loop.
if( $_FILES [ ‘userfile’ ][ ‘error’ ]== 0 ) <
// process
> else <
$error_message = $error_types [ $_FILES [ ‘userfile’ ][ ‘error’ ]];
// do whatever with the error message
>
// In a loop.
for( $x = 0 , $y = count ( $_FILES [ ‘userfile’ ][ ‘error’ ]); $x < $y ;++ $x ) <
if( $_FILES [ ‘userfile’ ][ ‘error’ ][ $x ]== 0 ) <
// process
> else <
$error_message = $error_types [ $_FILES [ ‘userfile’ ][ ‘error’ ][ $x ]];
// Do whatever with the error message
>
>
// When you’re done. if you aren’t doing all of this in a function that’s about to end / complete all the processing and want to reclaim the memory
unset( $error_types );
?>
Разъяснение сообщений об ошибках
PHP возвращает код ошибки наряду с другими атрибутами принятого файла. Он расположен в массиве, создаваемом PHP при загрузке файла, и может быть получен при обращении по ключу error. Говоря другими словами, код ошибки можно найти в переменной $_FILES[‘userfile’][‘error’] .
UPLOAD_ERR_OK
Значение: 0; Ошибок не возникло, файл был успешно загружен на сервер.
UPLOAD_ERR_INI_SIZE
Значение: 1; Размер принятого файла превысил максимально допустимый размер, который задан директивой upload_max_filesize конфигурационного файла php.ini .
UPLOAD_ERR_FORM_SIZE
Значение: 2; Размер загружаемого файла превысил значение MAX_FILE_SIZE, указанное в HTML-форме.
UPLOAD_ERR_PARTIAL
Значение: 3; Загружаемый файл был получен только частично.
UPLOAD_ERR_NO_FILE
Значение: 4; Файл не был загружен.
UPLOAD_ERR_NO_TMP_DIR
Значение: 6; Отсутствует временная папка. Добавлено в PHP 5.0.3.
UPLOAD_ERR_CANT_WRITE
Значение: 7; Не удалось записать файл на диск. Добавлено в PHP 5.1.0.
UPLOAD_ERR_EXTENSION
Значение: 8; PHP-расширение остановило загрузку файла. PHP не предоставляет способа определить какое расширение остановило загрузку файла; в этом может помочь просмотр списка загруженных расширений из phpinfo() . Добавлено в PHP 5.2.0.