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PHP | ReflectionClass inNamespace() Function

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  • Last Updated : 17 Dec, 2019
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The ReflectionClass::inNamespace() function is an inbuilt function in PHP which is used to check the existence of the namespace. It returns true for the success or false on failure.

Syntax:

bool ReflectionClass::inNamespace( void )

Parameters: This function does not accept any parameters.

Return Value: This function returns true for the success or false on failure.

Below programs illustrate the ReflectionClass::inNamespace() function in PHP:

Program 1:




<?php
  
// Defining a namespace and class GFG
namespace A\B;
class GFG{ } 
   
// Using ReflectionClass over the namespace and
// specified class GFG
$ReflectionClass = new \ReflectionClass('A\\B\\GFG');
   
// Calling inNamespace() function 
$A = $ReflectionClass->inNamespace();
   
// Getting the value true or false
var_dump($A);
?>


Output:

bool(true)

Program 2:




<?php
    
// Using ReflectionClass over the inbuilt 
// class 'stdClass'
$ReflectionClass = new ReflectionClass('stdClass');
    
// Calling inNamespace() function 
$A = $ReflectionClass->inNamespace();
    
// Getting the value true or false
var_dump($A);
?>


Output:

bool(false)

Reference: https://www.php.net/manual/en/reflectionclass.innamespace.php

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