function variable_del in Drupal 6

Same name and namespace in other branches

1. 4 includes/bootstrap.inc \variable_del()
2. 5 includes/bootstrap.inc \variable_del()
3. 7 includes/bootstrap.inc \variable_del()

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

variable_get(), variable_set()

31 calls to variable_del()

aggregator_uninstall in modules/aggregator/aggregator.install

Implementation of hook_uninstall().

color_scheme_form_submit in modules/color/color.module

Submit handler for color change form.

comment_node_type in modules/comment/comment.module

Implementation of hook_node_type().

comment_update_6002 in modules/comment/comment.install

Changed comment settings from global to per-node -- copy global settings to all node types.

contact_uninstall in modules/contact/contact.install

Implementation of hook_uninstall().

... See full list

File

includes/bootstrap.inc, line 641

Functions that need to be loaded on every Drupal request.

Code

function variable_del($name) {
  global $conf;
  db_query("DELETE FROM {variable} WHERE name = '%s'", $name);
  cache_clear_all('variables', 'cache');
  unset($conf[$name]);
}