PHP | ReflectionParameter isOptional() Function
The ReflectionParameter::isOptional() function is an inbuilt function in PHP which is used to return TRUE if the specified parameter is optional, otherwise FALSE.
Syntax:
bool ReflectionParameter::isOptional ( void )
Parameters: This function does not accept any parameters.
Return Value: This function returns TRUE if the specified parameter is optional, otherwise FALSE.
Below programs illustrate the ReflectionParameter::isOptional() function in PHP:
Program 1:
<?php
class Company1
{
function GFG( $Full_Name = GeeksforGeeks){}
}
class Company2 extends Company1
{
}
$A = new ReflectionParameter([ 'Company2' , 'GFG' ], 0);
$B = $A ->isOptional();
var_dump( $B );
?>
|
Program 2:
<?php
class Department1
{
function HR( $Full_Name ){}
}
class Department2
{
function Coding( $Parameter2 , $Par3 = 'Parameter3' ){}
}
class Department3
{
function Marketing( $Parameter4 , $Parameter5 ){}
}
$A = new ReflectionParameter([ 'Department1' , 'HR' ], 0);
$B = new ReflectionParameter([ 'Department2' , 'Coding' ], 1);
$C = new ReflectionParameter([ 'Department3' , 'Marketing' ], 1);
var_dump( $A ->isOptional());
var_dump( $B ->isOptional());
var_dump( $C ->isOptional());
?>
|
Output:
bool(false)
bool(true)
bool(false)
Reference: https://www.php.net/manual/en/reflectionparameter.isoptional.php
Last Updated :
23 Dec, 2019
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