PHP | ReflectionParameter allowsNull() Function
Last Updated :
23 Dec, 2019
The ReflectionParameter::allowsNull() function is an inbuilt function in PHP which is used to checks whether the parameter NULL is allowed or not.
Syntax:
bool ReflectionParameter::allowsNull ( void )
Parameters: This function does not accept any parameters.
Return Value: This function returns TRUE if NULL parameter is allowed else FALSE.
Below programs illustrate the ReflectionParameter::allowsNull() function in PHP:
Program 1:
<?php
class Company1
{
public function GFG( Exception $Parameter ){}
}
class Company2 extends Company1
{
}
$A = new ReflectionParameter([ 'Company2' , 'GFG' ], 0);
$B = $A ->allowsNull();
var_dump( $B );
?>
|
Program 2:
<?php
class Department1
{
public function HR( $Parameter1 ){}
}
class Department2
{
public function Coding( Exception $Parameter2 , Exception $Parameter3 ){}
}
class Department3
{
public function Marketing( $Parameter4 , $Parameter5 , $Parameter6 ){}
}
$A = new ReflectionParameter([ 'Department1' , 'HR' ], 0);
$B = new ReflectionParameter([ 'Department2' , 'Coding' ], 1);
$C = new ReflectionParameter([ 'Department3' , 'Marketing' ], 2);
var_dump( $A ->allowsNull());
var_dump( $B ->allowsNull());
var_dump( $C ->allowsNull());
?>
|
Output:
bool(true)
bool(false)
bool(true)
Reference: https://www.php.net/manual/en/reflectionparameter.allowsnull.php
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