Online PHP editor | refs for F5IKon

<?php $data="musisz odpowiedziec w ciagu 280 sekund: 88+67=?musisz odpowiedziec w ciagu 280 sekund: 88+67=?musisz odpowiedziec w ciagu 280 sekund: 88+67=?"; $rret = preg_match('/((\d+)(\+|\-|\*)(\d+))\s*\=\s*\?/', $data, $matches); if ($rret !== 1) { throw new \LogicException("ERROR: COULD NOT EXTRACT MATH QUESTION!"); } $left = (int)$matches[2]; $operator = $matches[3]; $right = (int)$matches[4]; $answer = null; switch ($operator) { case "+": { $answer = $left + $right; break; } case "*": { $answer = $left * $right; break; } case "-": { $answer = $left - $right; break; } default: { throw new \LogicException("UNKNOWN OPERATOR: {$operator}"); } } echo "question parsed: answer: \"{$answer}\" left: \"{$left}\" operator: \"{$operator}\" right: \"{$right}\"\n";