## Error Messages Explained

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. Introduced in 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.