PHP | ReflectionMethod isConstructor() Function

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The ReflectionMethod::isConstructor() function is an inbuilt function in PHP which is used to return TRUE if the specified method is constructor, otherwise returns FALSE.

Syntax:

bool ReflectionMethod::isConstructor( void )

Parameters: This function does not accept any parameters.

Return Value: This function returns TRUE if the specified method is constructor, otherwise returns FALSE.

Below programs illustrate the ReflectionMethod::isConstructor() function in PHP:

Program 1:

<?php 
  
// Initializing a user-defined class 
class Company { 
  
    function __construct() {} 
} 
  
// Using ReflectionMethod() over the class Company 
$A = new ReflectionMethod('Company', '__construct'); 
  
// Calling the isConstructor() function 
$B = $A->isConstructor(); 
  
// Getting the value TRUE if the specified 
// method is constructor, otherwise FALSE. 
var_dump($B); 
?> 

Output:

bool(true)

Program 2:

<?php 
   
// Initializing some user-defined classes 
class Department1 { 
   
    public function hr($name) { 
        return 'HR' . $name; 
    } 
} 
class Department2 { 
    function __construct() {} 
} 
  
class Department3 { 
     function marketing(){} 
} 
  
// Using ReflectionMethod() over the above classes 
$A = new ReflectionMethod('Department1', 'hR'); 
$B = new ReflectionMethod('Department2', '__construct'); 
$C = new ReflectionMethod('Department3', 'marketing'); 
   
// Calling the isConstructor() function and  
// getting the value TRUE if the specified 
// method is constructor, otherwise FALSE. 
var_dump($A->isConstructor()); 
var_dump($B->isConstructor()); 
var_dump($C->isConstructor()); 
?> 

Output:

bool(false)
bool(true)
bool(false)

Reference: https://www.php.net/manual/en/reflectionmethod.isconstructor.php

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