3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump("01" == "1", 01999 == "01", "01999" == "1", 01990, (int) 01999);
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, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
bool(true) bool(true) bool(false) int(1) int(1)
preferences:
240.66 ms | 1397 KiB | 162 Q