SplHeap
PHP Manual

SplHeap::valid

(PHP 5 >= 5.3.0, PHP 7)

SplHeap::validCheck whether the heap contains more nodes

Description

public bool SplHeap::valid ( void )

Checks if the heap contains any more nodes.

Parameters

This function has no parameters.

Return Values

Returns TRUE if the heap contains any more nodes, FALSE otherwise.


SplHeap
PHP Manual