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run code in 300+ PHP versions simultaneously
<?php var_dump(PHP_INT_MAX, PHP_INT_MAX === 9223372036854775807); var_dump(PHP_INT_MIN, PHP_INT_MIN === -9223372036854775808);
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
int(9223372036854775807) bool(true) int(-9223372036854775808) bool(false)
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 int(9223372036854775807) bool(true) int(-9223372036854775808) bool(false)

preferences:
135.66 ms | 402 KiB | 168 Q