Online PHP editor | refs for DYTOW

<?php class Example { public function yearManufactured() { return true; } public function make() { return false; } public function model() { return true; } public function evaluateExpressionArray(array $expression) { $expr = '$result ='; foreach ($expression as $part) { if ($part == '||' || $part == '&&') { $expr .= " $part "; } elseif (method_exists($this, $part)) { $expr .= $this->$part() ? 'true' : 'false'; } else { return null; } } echo $expr; try { eval("$expr;"); } catch (ParseError $e) { return null; } return $result; } } $ex = new Example(); $result = $ex->evaluateExpressionArray(array( 'yearManufactured', '&&', 'make', '||', '||', 'model' )); var_dump($result);