function file_validate_is_image

1 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 core/modules/simpletest/tests/file.test: This ensures a specific file is actually an image.

6 string references to 'file_validate_is_image'

ckeditor5_image_upload in core/modules/ckeditor5/ckeditor5.pages.inc: Menu callback; Saves images uploaded via copy/paste into the editor.
ckeditor_image_upload in core/modules/ckeditor/ckeditor.pages.inc: Menu callback; Saves images uploaded via copy/paste into the editor.
form_example_tutorial_10_validate in modules/examples/form_example/form_example_tutorial.inc: Validate handler for form_example_tutorial_10().
user_validate_picture in core/modules/user/user.module: Validates an image uploaded by a user.
_file_test_form_submit in core/modules/simpletest/tests/file_test.module: Process the upload.

... See full list

File

core/includes/file.inc, line 1885: 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'])) {
    $supported_extensions = image_get_supported_extensions();
    $errors[] = t('Only images with the following extensions are allowed: @formats.', array('@formats' => implode(', ', $supported_extensions)));
  }

  return $errors;
}