function file_validate_is_image

1.20.x file.inc file_validate_is_image(File $file)

Checks that the file is recognized by image_get_info() as an image.

Parameters

File $file: A file entity.

Return value

An array. If the file is not an image, it will contain an error message.:

See also

hook_file_validate()

Related topics

File interface Common file handling functions.

1 call to file_validate_is_image()

FileValidatorTest::testFileValidateIsImage in modules/simpletest/tests/file.test: This ensures a specific file is actually an image.

4 string references to 'file_validate_is_image'

ckeditor_image_upload in modules/ckeditor/ckeditor.pages.inc: Menu callback; Saves images uploaded via copy/paste into the editor.
_file_test_form_submit in modules/simpletest/tests/file_test.module: Process the upload.
_image_field_default_image_validate in modules/image/image.field.inc: Element validation function for setting a default image.
user_validate_picture in modules/user/user.module: Validates an image uploaded by a user.

File

includes/file.inc, line 1877: API for handling file uploads and server file management.

Code

function file_validate_is_image(File $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;
}