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PHP ReflectionClass getExtension () function

Syntax:
ReflectionExtension ReflectionClass::getExtension (void)
Parameters:This function takes no parameters.Return Value:This function returns a ReflectionExtension object that represents an extension for a specific class, or NULL for custom classes.The following programs illustrate the ReflectionClass::getExtension() function in PHP:Program 1:  
// Defining a custom class named Departments class Departments { static $Dept1 = ’CSE’ ; private static $Dept2 = ’ECE’ ; public static $Dept3 = ’EE’ ; }  
// Using ReflectionClass over the Departments class $ReflectionClass = new ReflectionClass ( ’Departments’ );  
// Call getExtension() functions $A = $ReflectionClass -> getExtension();  
// Get the ReflectionExtension object var_dump ( $A ); ?>
Output:
NULL
Program 2:  
// Using ReflectionClass $ReflectionClass = new ReflectionClass ( ’ReflectionClass’ );  
// Call getExtension() functions $A = $ReflectionClass -> getExtension();  
// Get the ReflectionExtension object var_dump ( $A ); ?>
Output:
object (ReflectionExtension) # 2 (1) {["name"] = > string (10) "Reflection"}
Link: https://www.php.net/manual/en/reflectionclass.getextension.php

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