Online PHP editor | output for HrMKN

<?php class Foo { public function createFunction($formula, $args) { $func = function ($args) use ($formula) { foreach ($args as $key => $val) { $$key = $val; } return eval($formula); }; return $func($args); } } $foo = new Foo; $formula = <<<'EOT' if($a == 'some_value' || $c == 'other_value') { return 'something'; } else if($b == 'something' && $d == 'anything') { return 'something_else'; } else { return 'anything'; } EOT; echo $foo->createFunction($formula, ['a' => 'some_value', 'b' => '', 'c' => 'other_value', 'd' => 'anything']); echo "\n"; echo $foo->createFunction($formula, ['a' => '', 'b' => 'something', 'c' => '', 'd' => 'anything']); echo "\n"; echo $foo->createFunction($formula, ['a' => '', 'b' => '', 'c' => '', 'd' => '']);