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<ReflectionClass::initializeLazyObjectReflectionClass::isAbstract>
^ReflectionClassLast updated: Mon, 26 Oct 2026

ReflectionClass::inNamespace

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

ReflectionClass::inNamespace — Checks if in namespace

Description

public function ReflectionClass::inNamespace(): bool

Checks if this class is defined in a namespace.

Parameters

This function has no parameters.

Return Values

Returns true if the class is in specified namespace or false otherwise.

Examples

Example #1 ReflectionClass::inNamespace() example

<?php
namespace A\B;

class Foo { }

$function = new \ReflectionClass('stdClass');

var_dump($function->inNamespace());
var_dump($function->getName());
var_dump($function->getNamespaceName());
var_dump($function->getShortName());

$function = new \ReflectionClass('A\\B\\Foo');

var_dump($function->inNamespace());
var_dump($function->getName());
var_dump($function->getNamespaceName());
var_dump($function->getShortName());
?>

The above example will output:

bool(false)
string(8) "stdClass"
string(0) ""
string(8) "stdClass"

bool(true)
string(7) "A\B\Foo"
string(3) "A\B"
string(3) "Foo"

See Also


<ReflectionClass::initializeLazyObjectReflectionClass::isAbstract>
^ReflectionClassLast updated: Mon, 26 Oct 2026