1--TEST-- 2$v = !$v/(bool)$v checks for undefined variables 3--INI-- 4opcache.enable=1 5opcache.enable_cli=1 6opcache.file_cache_only=0 7--SKIPIF-- 8<?php require_once('skipif.inc'); ?> 9--FILE-- 10<?php 11function undef_negation() { 12 echo "In undef_negation\n"; 13 $v = !$v; 14 var_export($v); 15 echo "\n"; 16} 17function undef_bool_cast() { 18 echo "In undef_bool_cast\n"; 19 $v = (bool)$v; 20 var_export($v); 21 echo "\n"; 22} 23undef_negation(); 24undef_bool_cast(); 25?> 26--EXPECTF-- 27In undef_negation 28 29Warning: Undefined variable $v in %s on line 4 30true 31In undef_bool_cast 32 33Warning: Undefined variable $v in %s on line 10 34false 35
