function system_date_format_exists

Checks if the chosen machine_name exists or not.

1 string reference to 'system_date_format_exists'
system_configure_date_formats_form in drupal/core/modules/system/system.admin.inc
Allow users to add additional date formats.

File

drupal/core/modules/system/system.admin.inc, line 2678
Admin page callbacks for the system module.

Code

function system_date_format_exists($candidate_machine_name) {
  if ($formats = system_get_date_formats()) {
    return array_key_exists($candidate_machine_name, $formats);
  }
  return FALSE;
}