XBRL.php
public static function isTuple( $taxonomy_element, $types = null )
	{
		if ( $types == null ) $types = XBRL_Types::getInstance();

		return isset( $taxonomy_element['substitutionGroup'] ) &&
		$types->resolveToSubstitutionGroup( $taxonomy_element['substitutionGroup'], array( XBRL_Constants::$xbrliTuple ) );
	}
public static function isTuple( $taxonomy_element, $types = null )
	{
		if ( $types == null ) $types = XBRL_Types::getInstance();

		return isset( $taxonomy_element['substitutionGroup'] ) &&
		$types->resolveToSubstitutionGroup( $taxonomy_element['substitutionGroup'], array( XBRL_Constants::$xbrliTuple ) );
	}
public static function isTuple ( $ taxonomy_element , $ types = null ) { if ( $ types == null ) $ types = XBRL_Types :: getInstance ( ) ; return isset ( $ taxonomy_element [ 'substitutionGroup' ] ) && $ types -> resolveToSubstitutionGroup ( $ taxonomy_element [ 'substitutionGroup' ] , array ( XBRL_Constants :: $ xbrliTuple ) ) ; }
Tests whether the node represents a tuple
@param array $taxonomy_element An XBRL element node
@param XBRL_Types $types (optional) an instance of the XBRL_types class
@return boolean True|False
Tests whether the node represents a tuple