function _image_source_image_exists

Checks whether the provided source image exists.

When a valid token is provided for the image URI, this function is equivalent to calling file_exists($image_uri).

Parameters

string $image_uri: The URI for the source image.

bool $token_is_valid: Whether a valid image token was supplied.

Return value

bool Whether the source image exists.

File

modules/image/image.module, line 942

Code

function _image_source_image_exists($image_uri, $token_is_valid) {
  $exists = file_exists($image_uri);
  // If the file doesn't exist, we can stop here.
  if (!$exists) {
    return FALSE;
  }
  if ($token_is_valid) {
    return TRUE;
  }
  if (file_uri_scheme($image_uri) !== 'public') {
    return TRUE;
  }
  $image_path = drupal_realpath($image_uri);
  $private_path = variable_get('file_private_path', FALSE);
  if ($private_path) {
    $private_path = realpath($private_path);
    if ($private_path && strpos($image_path, $private_path) === 0) {
      return FALSE;
    }
  }
  return TRUE;
}