3v4l.org

run code in 300+ PHP versions simultaneously
<?php $val = b00010111; $result = $val ^ b00000001; echo decbin($result);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught Error: Undefined constant "b00010111" in /in/8NRgV:3 Stack trace: #0 {main} thrown in /in/8NRgV on line 3
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant b00010111 - assumed 'b00010111' (this will throw an Error in a future version of PHP) in /in/8NRgV on line 3 Warning: Use of undefined constant b00000001 - assumed 'b00000001' (this will throw an Error in a future version of PHP) in /in/8NRgV on line 4 0
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33
Notice: Use of undefined constant b00010111 - assumed 'b00010111' in /in/8NRgV on line 3 Notice: Use of undefined constant b00000001 - assumed 'b00000001' in /in/8NRgV on line 4 0

preferences:
188.84 ms | 402 KiB | 222 Q