3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump($a=-2147483648, bin2hex($b=pack("i", $a)), unpack("i", $b));
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.3 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.25, 8.4.1 - 8.4.12
int(-2147483648) string(8) "00000080" array(1) { [1]=> int(-2147483648) }
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(-2147483648) string(8) "00000080" array(1) { [1]=> int(-2147483648) }
Output for 8.1.0 - 8.1.2
int(-2147483648) string(8) "00000080" array(1) { [1]=> int(2147483648) }

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120.57 ms | 408 KiB | 5 Q