Retrieves the value of a query variable.
Parameters
$query_var
stringrequired- Query variable key.
$default_value
mixedoptional- Value to return if the query variable is not set.
Default:
''
Source
public function get( $query_var, $default_value = '' ) {
if ( isset( $this->query_vars[ $query_var ] ) ) {
return $this->query_vars[ $query_var ];
}
return $default_value;
}
Check if it’s Custom post type query:
Usage scenario: if it’s a query for CPT recipe, it’s not the main query, it’s not admin -> say Hello! before it starts