3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump("xx4x" == "xxxx4x");
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 - 5.6.18, 5.6.21 - 5.6.31, 5.6.35 - 5.6.40, 7.0.0 - 7.0.2, 7.0.4 - 7.0.9, 7.0.16 - 7.0.33, 7.1.0 - 7.1.17, 7.1.19, 7.1.21 - 7.1.33, 7.2.0 - 7.2.4, 7.2.6, 7.2.8, 7.2.10 - 7.2.26, 7.3.0 - 7.3.13, 7.4.0 - 7.4.1, 8.1.24 - 8.1.28, 8.2.11 - 8.2.18, 8.3.0 - 8.3.6
bool(false)
Output for 5.6.19 - 5.6.20, 5.6.32 - 5.6.34, 7.0.3, 7.0.10 - 7.0.15, 7.1.18, 7.1.20, 7.2.5, 7.2.7, 7.2.9

Process exited with code 137.

preferences:
231 ms | 403 KiB | 345 Q