3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a= 0128; $b= 0129; if(a==b){ echo "ПХП для ссаный макак"; }
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Notice: Use of undefined constant a - assumed 'a' in /in/uUIkP on line 4 Notice: Use of undefined constant b - assumed 'b' in /in/uUIkP on line 4

preferences:
193.8 ms | 1396 KiB | 77 Q