The ReflectionParameter::getDefaultValue() function is an inbuilt function in PHP which is used to return the default value of the parameter for the specified user-defined function or method.
Syntax:
mixed ReflectionParameter::getDefaultValue ( void )
Parameters: This function does not accept any parameters.
Return Value: This function returns the default value of the parameter for the specified user-defined function or method.
Below programs illustrate the ReflectionParameter::getDefaultValue() function in PHP:
Program 1:
<?php   // Initializing a user-defined class Company1 class Company1 {     function GFG($Full_Name = 'neveropen'){} }    // Initializing a subclass Company2 class Company2 extends Company1 { }    // Using the ReflectionParameter over the above class $A = new ReflectionParameter(['Company2', 'GFG'], 0);    // Calling the getDefaultValue() function $B = $A->getDefaultValue();    // Getting the default value of the parameter var_dump($B); ?> |
Output:
string(13) "neveropen"
Program 2:
<?php    // Initializing some user-defined classes class Department1 {     function HR( $Full_Name = 'Human Resource'){} } class Department2 {     function Coding( $Parameter2, $Par3 = 'Parameter3'){} } class Department3 {     function Marketing( $Parameter4 = 'Digital Marketing', $Parameter5){} }    // Using the ReflectionParameter over the above classes $A = new ReflectionParameter(['Department1', 'HR'], 0); $B = new ReflectionParameter(['Department2', 'Coding'], 1); $C = new ReflectionParameter(['Department3', 'Marketing'], 0);    // Calling the getDefaultValue() function and // getting the default value of the parameter var_dump($A->getDefaultValue()); var_dump($B->getDefaultValue()); var_dump($C->getDefaultValue()); ?> |
Output:
string(14) "Human Resource" string(10) "Parameter3" string(17) "Digital Marketing"
Reference: https://www.php.net/manual/en/reflectionparameter.getdefaultvalue.php
