Question

Using PHP’s ReflectionClass. Is this possible?

I want to get a list of methods and the defined variables and if possible their default values too.

$reflection = new \ReflectionClass($var);
$methods = $reflection->getMethods(\ReflectionMethod::IS_PUBLIC);

print_r($methods); // only method names here :(

Answer 1

Use the ReflectionParameter::getDefaultValue() method. With your code example:

$reflection = new \ReflectionClass($var);
$methods = $reflection->getMethods(\ReflectionMethod::IS_PUBLIC);
$methodParameters = array();

foreach ($methods as $method) {
    $parameters = $method->getParameters();
    foreach ($parameters as $parameter) {
        $name = $method->getName() . '::' . $parameter->getName();
        $methodParameters[$name] = null;
        if ($parameter->isOptional()) {
            $methodParameters[$name] = $parameter->getDefaultValue();
        }
    }
}

---

An example:

class a {

        public function methodOne() {
        }

        public function methodTwo($param) {     
        }

        public function methodThree($param = 'foo') {
        }

}

    $var = new a();

    $reflection = new \ReflectionClass($var);
    $methods = $reflection->getMethods(\ReflectionMethod::IS_PUBLIC);
    $methodParameters = array();

    foreach ($methods as $method) {
        $parameters = $method->getParameters();
        foreach ($parameters as $parameter) {
            $name = $method->getName() . '::' . $parameter->getName();
            $methodParameters[$name] = null;
            if ($parameter->isOptional()) {
                $methodParameters[$name] = $parameter->getDefaultValue();
            }
        }
    }
    var_dump($methodParameters);

// results in this array:

array(2) {
  ["methodTwo::param"]=>
  NULL
  ["methodThree::param"]=>
  string(3) "foo"
}