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PHP | ReflectionClass getConstructor() Function

  • Last Updated : 30 Nov, 2019
Geek Week

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 GeeksforGeeks() { }
    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);
?>
Output:
NULL

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




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