3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(is_numeric("200")); var_dump(is_numeric("20,0")); var_dump(is_numeric("$200")); var_dump(is_numeric(".25e4"));
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
bool(true) bool(false) bool(false) bool(true)

preferences:
244.26 ms | 404 KiB | 290 Q