1--TEST-- 2SPL: Test of isEmpty for SPL Max Heap 3--CREDITS-- 4Rohan Abraham (rohanabrahams@gmail.com) 5TestFest London May 2009 6--FILE-- 7<?php 8 $h = new SplMaxHeap(); 9 echo "Checking a new heap is empty: "; 10 var_dump($h->isEmpty())."\n"; 11 $h->insert(2); 12 echo "Checking after insert: "; 13 var_dump($h->isEmpty())."\n"; 14 $h->extract(); 15 echo "Checking after extract: "; 16 var_dump($h->isEmpty())."\n"; 17?> 18--EXPECT-- 19Checking a new heap is empty: bool(true) 20Checking after insert: bool(false) 21Checking after extract: bool(true)