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<?php function calc(float $number, float $result, string $operation) { echo "$result $operation $number = "; if ($operation == "+") { $result += $number; } elseif ($operation == "-") { $result -= $number; } elseif ($operation == "*") { $result *= $number; } elseif ($operation == "/") { $result /= $number; } echo "$result\n"; return $result; } $input = "144/2*5-14.4="; $numbers = preg_split('/[+]|[-]|[=]|[*]|\\//u', $input); $operations = preg_split('/[0-9]+[.]*[0-9]*/', $input); foreach ($numbers as &$number) { $number = floatval($number); } $result = $numbers[0]; for ($i = 1; $i < count($numbers) - 1; $i++) { $result = calc($numbers[$i], $result, $operations[$i]); } echo $input.$result;
Output for git.master, git.master_jit, rfc.property-hooks
144 / 2 = 72 72 * 5 = 360 360 - 14.4 = 345.6 144/2*5-14.4=345.6

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