PHP 8.4.0 RC4 available for testing

ReflectionParameter::getClass

(PHP 5, PHP 7, PHP 8)

ReflectionParameter::getClassGet a ReflectionClass object for the parameter being reflected or null

Warnung

Diese Funktion ist seit PHP 8.0.0 als DEPRECATED (veraltet) markiert. Von der Verwendung dieser Funktion wird dringend abgeraten.

Beschreibung

public ReflectionParameter::getClass(): ?ReflectionClass

Gets a ReflectionClass object for the parameter being reflected or null.

As of PHP 8.0.0 this function is deprecated and not recommended. Instead, use ReflectionParameter::getType() to get the ReflectionType of the parameter, then interrogate that object to determine the parameter type.

Warnung

Diese Funktion ist bis jetzt nicht dokumentiert. Es steht nur die Liste der Parameter zur Verfügung.

Parameter-Liste

Diese Funktion besitzt keine Parameter.

Rückgabewerte

A ReflectionClass object, or null if no type is declared, or the declared type is not a class or interface.

Beispiele

Beispiel #1 Using the ReflectionParameter class

<?php
function foo(Exception $a) { }

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

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

Siehe auch

add a note

User Contributed Notes 5 notes

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12
infernaz at gmail dot com
13 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

?>
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10
tom at r dot je
12 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;
}
?>
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4
Dylan
3 years ago
For php version >=8
ReflectionParamter::getType() is the recommended way to replace the deprecated methods:

- getClass()
e.g: $name = $param->getType() && !$param->getType()->isBuiltin()
? new ReflectionClass($param->getType()->getName())
: null;

- isArray()
e.g: $isArray = $param->getType() && $param->getType()->getName() === 'array';

- isCallable()
e.g: $isCallable = $param->getType() && $param->getType()->getName() === 'callable';

This method is available in PHP 7.0 and later.
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1
tarik at bitstore dot ru
3 years ago
You may use this one function instead depricated

/**
* Get parameter class
* @param \ReflectionParameter $parameter
* @return \ReflectionClass|null
*/
private function getClass(\ReflectionParameter $parameter):?\ReflectionClass
{
$type = $parameter->getType();
if (!$type || $type->isBuiltin())
return NULL;

// This line triggers autoloader!
if(!class_exists($type->getName()))
return NULL;


return new \ReflectionClass($type->getName());
}
up
-4
richard dot t dot rohrig at gmail dot com
4 years ago
Example of how to use getClass() in conjunction with getConstructor() to build the dependencies of a class.

private function buildDependencies(ReflectionClass $reflection)
{
$constructor = $reflection->getConstructor();

if (!$constructor) {
return [];
}

$params = $constructor->getParameters();

return array_map(function ($param) {

$className = $param->getClass();

if (!$className) {
throw new Exception();
}

$className = $param->getClass()->getName();

return $this->make($className);
}, $params);
}
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