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run code in 500+ PHP versions simultaneously
<?php $strings = [ "01", "1001111", "010011111", "0100111110001110", "0100111011001110", "0100111110011110", "0100111111111111110001110", "0100111011001110", "1011010111", "0100111011001110", ]; $pattern = '/^0*\K(?:[01]*?((?(1)\1)1))+/m'; foreach ($strings as $s) { if (preg_match($pattern, $s, $match)) { echo "$s --> " . $match[0] . PHP_EOL; } }
Output for 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 - 8.3.4, 8.3.6 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
01 --> 1 1001111 --> 10011 010011111 --> 10011111 0100111110001110 --> 10011111 0100111011001110 --> 10011101100111 0100111110011110 --> 10011111001111 0100111111111111110001110 --> 10011111111111111 0100111011001110 --> 10011101100111 1011010111 --> 1011010111 0100111011001110 --> 10011101100111
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 01 --> 1 1001111 --> 10011 010011111 --> 10011111 0100111110001110 --> 10011111 0100111011001110 --> 10011101100111 0100111110011110 --> 10011111001111 0100111111111111110001110 --> 10011111111111111 0100111011001110 --> 10011101100111 1011010111 --> 1011010111 0100111011001110 --> 10011101100111
preferences:
105.64 ms | 1438 KiB | 4 Q