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run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 1; $b = 2; var_dump((a+b)-b == a);
Output for 7.1.0
Notice: Use of undefined constant a - assumed 'a' in /in/ubUpi on line 4 Notice: Use of undefined constant b - assumed 'b' in /in/ubUpi on line 4 Warning: A non-numeric value encountered in /in/ubUpi on line 4 Warning: A non-numeric value encountered in /in/ubUpi on line 4 Notice: Use of undefined constant b - assumed 'b' in /in/ubUpi on line 4 Warning: A non-numeric value encountered in /in/ubUpi on line 4 Notice: Use of undefined constant a - assumed 'a' in /in/ubUpi on line 4 bool(true)
Output for 4.3.0 - 7.0.14
Notice: Use of undefined constant a - assumed 'a' in /in/ubUpi on line 4 Notice: Use of undefined constant b - assumed 'b' in /in/ubUpi on line 4 Notice: Use of undefined constant b - assumed 'b' in /in/ubUpi on line 4 Notice: Use of undefined constant a - assumed 'a' in /in/ubUpi on line 4 bool(true)