function system_date_format_exists

Checks if the chosen machine_name exists or not.

2 string references to 'system_date_format_exists'
DateFormatAddForm::buildForm in drupal/core/modules/system/lib/Drupal/system/Form/DateFormatAddForm.php
Form constructor.
DateFormatEditForm::buildForm in drupal/core/modules/system/lib/Drupal/system/Form/DateFormatEditForm.php
Form constructor.

File

drupal/core/modules/system/system.admin.inc, line 1757
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;
}