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run code in 300+ PHP versions simultaneously
<?php echo 'Hexadecimal', \PHP_EOL; try { var_dump(gmp_init('0X')); } catch (\TypeError $e) { echo $e->getMessage(), \PHP_EOL; } try { var_dump(gmp_init('0x')); } catch (\TypeError $e) { echo $e->getMessage(), \PHP_EOL; } try { var_dump(gmp_init('0X', 16)); } catch (\TypeError $e) { echo $e->getMessage(), \PHP_EOL; } try { var_dump(gmp_init('0x', 16)); } catch (\TypeError $e) { echo $e->getMessage(), \PHP_EOL; } echo 'Binary', \PHP_EOL; try { var_dump(gmp_init('0B')); } catch (\TypeError $e) { echo $e->getMessage(), \PHP_EOL; } try { var_dump(gmp_init('0b')); } catch (\TypeError $e) { echo $e->getMessage(), \PHP_EOL; } try { var_dump(gmp_init('0B', 2)); } catch (\TypeError $e) { echo $e->getMessage(), \PHP_EOL; } try { var_dump(gmp_init('0b', 2)); } catch (\TypeError $e) { echo $e->getMessage(), \PHP_EOL; } echo "Done\n";

preferences:
55.64 ms | 402 KiB | 5 Q