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PHP | ReflectionClass isInternal() Function

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  • Last Updated : 17 Dec, 2019
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The ReflectionClass::isInternal() function is an inbuilt function in PHP which is used to check if class is defined internally by an extension, or the core.

Syntax:

bool ReflectionClass::isInternal( void )

Parameters: This function does not accept any parameters.

Return Value: This function returns TRUE if the class is defined internally by an extension, otherwise FALSE.

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

Program 1:




<?php
  
// Initializing a user-defined class Departments
class Departments {
    public function CSE() {}
}
  
// Using ReflectionClass() over the
// user-defined class Departments
$class = new ReflectionClass('Departments');
  
// Calling the isInternal() function
$instance = $class->isInternal();
  
// Getting the value true or false
var_dump($instance);
?>


Output:

bool(false)

Program 2:




<?php
  
// Using ReflectionClass internally
$InternalClass = new ReflectionClass('ReflectionClass');
  
// Calling the isInternal() function and
// getting the value true or false
var_dump($InternalClass->isInternal());
?>


Output:

bool(true)

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

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