3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'blahblah'; $b = 'hablalbb'; $x = 0; for ($i = 0; $i < 8; $i++) { $x ^= ($a[$i] ^ $b[$i]); var_dump($x); } var_dump($x);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: Unsupported operand types: int ^ string in /in/m2ndX:9 Stack trace: #0 {main} thrown in /in/m2ndX on line 9
Process exited with code 255.
Output for 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: A non-numeric value encountered in /in/m2ndX on line 9 int(0) Warning: A non-numeric value encountered in /in/m2ndX on line 9 int(0) Warning: A non-numeric value encountered in /in/m2ndX on line 9 int(0) Warning: A non-numeric value encountered in /in/m2ndX on line 9 int(0) Warning: A non-numeric value encountered in /in/m2ndX on line 9 int(0) Warning: A non-numeric value encountered in /in/m2ndX on line 9 int(0) Warning: A non-numeric value encountered in /in/m2ndX on line 9 int(0) Warning: A non-numeric value encountered in /in/m2ndX on line 9 int(0) int(0)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20
int(0) int(0) int(0) int(0) int(0) int(0) int(0) int(0) int(0)

preferences:
220.51 ms | 404 KiB | 354 Q