public function SelectQuery::addTag
public SelectQuery::addTag($tag)
Adds a tag to a query.
Tags are strings that identify a query. A query may have any number of tags. Tags are used to mark a query so that alter hooks may decide if they wish to take action. Tags should be all lower-case and contain only letters, numbers, and underscore, and start with a letter. That is, they should follow the same rules as PHP identifiers in general.
Parameters
$tag: The tag to add.
Return value
QueryAlterableInterface The called object.
Overrides QueryAlterableInterface::addTag
File
- includes/database/select.inc, line 977
Class
- SelectQuery
- Query builder for SELECT statements.
Code
public function addTag($tag) { $this->alterTags[$tag] = 1; return $this; }
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https://api.drupal.org/api/drupal/includes!database!select.inc/function/SelectQuery::addTag/7.x