ReflectionParameter::getClass

(PHP 5, PHP 7)

ReflectionParameter::getClass — Get the type hinted class

Description

public ReflectionClass ReflectionParameter::getClass ( void )

Gets the class type hinted for the parameter as a ReflectionClass object.

Warning

This function is currently not documented; only its argument list is available.

Parameters

This function has no parameters.

Return Values

A ReflectionClass object.

Examples

Example #1 Using the ReflectionParameter class


<?php
function foo(Exception $a) { }

$functionReflection = new ReflectionFunction('foo');
$parameters = $functionReflection->getParameters();
$aParameter = $parameters[0];

echo $aParameter->getClass()->name;
?>

The above example will output:

Exception

User Contributed Notes

tom at r dot je

3 years ago


ReflectionParameter::getClass() will cause a fatal error (and trigger __autoload) if the class required by the parameter is not defined. 

Sometimes it's useful to only know the class name without needing the class to be loaded.

Here's a simple function that will retrieve only the class name without requiring the class to exist:

<?php
function getClassName(ReflectionParameter $param) {
    preg_match('/\[\s\<\w+?>\s([\w]+)/s', $param->__toString(), $matches);
    return isset($matches[1]) ? $matches[1] : null;
}
?>

infernaz at gmail dot com

5 years ago


The method returns ReflectionClass object of parameter type class or NULL if none.

<?php

class A {
    function b(B $c, array $d, $e) {
    }
}
class B {
}

$refl = new ReflectionClass('A');
$par = $refl->getMethod('b')->getParameters();

var_dump($par[0]->getClass()->getName());  // outputs B
var_dump($par[1]->getClass());  // note that array type outputs NULL
var_dump($par[2]->getClass());  // outputs NULL

?>