3v4l.org

run code in 500+ PHP versions simultaneously
<?php $foo = str_repeat("9", strlen(PHP_INT_MAX) + 1); var_dump($foo); settype($foo, "integer"); var_dump($foo);
Output for 7.0.0 - 7.0.20, 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.2 - 8.5.3
string(20) "99999999999999999999" int(9223372036854775807)
Output for 8.5.0 - 8.5.1
string(20) "99999999999999999999" Warning: The float-string "99999999999999999999" is not representable as an int, cast occurred in /in/LSBfU on line 5 int(9223372036854775807)
preferences:
92.29 ms | 1483 KiB | 4 Q