function variable_del
7.x bootstrap.inc | variable_del($name) |
6.x bootstrap.inc | variable_del($name) |
Unsets a persistent variable.
Case-sensitivity of the variable_* functions depends on the database collation used. To avoid problems, always use lower case for persistent variable names.
Parameters
$name: The name of the variable to undefine.
See also
75 calls to variable_del()
- aggregator_sanitize_configuration in drupal-7.x/
modules/ aggregator/ aggregator.module - Checks and sanitizes the aggregator configuration.
- aggregator_uninstall in drupal-7.x/
modules/ aggregator/ aggregator.install - Implements hook_uninstall().
- batch_test_stack in drupal-7.x/
modules/ simpletest/ tests/ batch_test.module - Helper function: store or retrieve traced execution data.
- block_update_7004 in drupal-7.x/
modules/ block/ block.install - Add new blocks to new regions, migrate custom variables to blocks.
- blog_uninstall in drupal-7.x/
modules/ blog/ blog.install - Implements hook_uninstall().
File
- drupal-7.x/
includes/ bootstrap.inc, line 996 - Functions that need to be loaded on every Drupal request.
Code
function variable_del($name) {
global $conf;
db_delete('variable')
->condition('name', $name)
->execute();
cache_clear_all('variables', 'cache_bootstrap');
unset($conf[$name]);
}