function file_validate_is_image
file_validate_is_image(stdClass $file)
Checks that the file is recognized by image_get_info() as an image.
Parameters
$file: A Drupal file object.
Return value
An array. If the file is not an image, it will contain an error message.
See also
Related topics
File
- includes/file.inc, line 1774
- API for handling file uploads and server file management.
Code
function file_validate_is_image(stdClass $file) { $errors = array(); $info = image_get_info($file->uri); if (!$info || empty($info['extension'])) { $errors[] = t('Only JPEG, PNG and GIF images are allowed.'); } return $errors; }
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https://api.drupal.org/api/drupal/includes!file.inc/function/file_validate_is_image/7.x