wp-includes/query.php:74Sets the value of a query variable in the WP_Query class.
$query_varstring$valuemixedfunction set_query_var( $query_var, $value ) { global $wp_query; $wp_query->set( $query_var, $value );}Introduced in 2.2.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/query.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.