ReflectionParameter::getClass

(PHP 5, PHP 7)

ReflectionParameter::getClassGet the type hinted class

Descrierea

public ReflectionParameter::getClass ( ) : ReflectionClass

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

Avertizare

Această funcție nu este documentată în prezent; este disponibilă numai lista sa de argumente.

Parametri

Această funcție nu are parametri.

Valorile întoarse

A ReflectionClass object.

Exemple

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;
?>

Exemplul de mai sus va afișa:

Exception

A se vedea și

add a note add a note

User Contributed Notes 5 notes

up
13
infernaz at gmail dot com
10 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

?>
up
11
tom at r dot je
8 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;
}
?>
up
-1
tarik at bitstore dot ru
1 month 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
-1
Dylan
2 months 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.
up
-4
richard dot t dot rohrig at gmail dot com
10 months 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);
    }
To Top