(PHP 5, PHP 7, PHP 8)
ReflectionParameter::getClass — Get a ReflectionClass object for the parameter being reflected or null
This function has been DEPRECATED as of PHP 8.0.0. Relying on this function is highly discouraged.
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.
This function is currently not documented; only its argument list is available.
This function has no parameters.
A ReflectionClass object, or null if no type is declared,
or the declared type is not a class or interface.
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;
?>| Version | Description |
|---|---|
| 8.0.0 | This function has been deprecated in favor of ReflectionParameter::getType() instead. |
The method returns ReflectionClass object of parameter type class or NULL if none.<?phpclass 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 Bvar_dump($par[1]->getClass()); // note that array type outputs NULLvar_dump($par[2]->getClass()); // outputs NULL?>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:<?phpfunction getClassName(ReflectionParameter $param) { preg_match('/\[\s\<\w+?>\s([\w]+)/s', $param->__toString(), $matches); return isset($matches[1]) ? $matches[1] : null;}?>For php version >=8ReflectionParamter::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.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()); }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); }