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<?php $facts = []; $facts['A'] = true; $facts['B'] = false; $test = '(A || B);'; $ruleExecutor = function ($_rule) use ($facts) { $_condition = preg_replace('/(\w+)/', '$$1', $_rule); //(A || B) => ($A || $B) extract($facts); unset($facts); var_dump($_condition); return eval($_condition); }; var_dump($ruleExecutor($test)); var_dump($facts); ?>
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
string(11) "($A || $B);" NULL array(2) { ["A"]=> bool(true) ["B"]=> bool(false) }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 string(11) "($A || $B);" NULL array(2) { ["A"]=> bool(true) ["B"]=> bool(false) }
preferences:
198.01 ms | 402 KiB | 291 Q