PHP | ReflectionClass getConstructor() Function

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The ReflectionClass::getConstructor() function is an inbuilt function in PHP which is used to return the constructor of the specified class or NULL if the class is not having any constructor.

Syntax:

ReflectionMethod ReflectionClass::getConstructor( void )

Parameters: This function does not accept any parameter.

Return Value: This function returns the constructor of the specified class or NULL if the class is not having any constructor.

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

Program 1:

<?php 
  
// Using ReflectionClass over the class named as ReflectionClass 
$Class = new ReflectionClass('ReflectionClass'); 
  
// Calling the getConstructor() function  
$constructor = $Class->getConstructor(); 
  
// Getting the constructor for the defined Class 
var_dump($constructor); 
?> 

Output:

object(ReflectionMethod)#2 (2) {
  ["name"]=>
  string(11) "__construct"
  ["class"]=>
  string(15) "ReflectionClass"
}

Program 2:

    
// Defining a user-defined class Company 
class Company { 
    public function zambiatek() { } 
    static function gfg() { } 
} 
    
// Using ReflectionClass over the class Company 
$A = new ReflectionClass("Company"); 
    
// Calling the getConstructor() function 
$B = $A->getConstructor(); 
    
// Getting the constructor for the defined Class 
// or NULL if the constructor is not present 
var_dump($B); 
?> 