file_validate_extensions

• Drupal 6
• Drupal 7

Versions

6

file_validate_extensions($file, $extensions)

7

file_validate_extensions(stdClass $file, $extensions)

Check that the filename ends with an allowed extension.

See also

hook_file_validate()

Parameters

$file A Drupal file object.

$extensions A string with a space separated list of allowed extensions.

Return value

An array. If the file extension is not allowed, it will contain an error message.

Related topics

File interface

Common file handling functions.

Code

includes/file.inc, line 1289

<?php
function file_validate_extensions(stdClass $file, $extensions) {
  $errors = array();

  $regex = '/\.(' . preg_replace('/ +/', '|', preg_quote($extensions)) . ')$/i';
  if (!preg_match($regex, $file->filename)) {
    $errors[] = t('Only files with the following extensions are allowed: %files-allowed.', array('%files-allowed' => $extensions));
  }
  return $errors;
}
?>

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