The ReflectionParameter::__toString() function is an inbuilt function in PHP which is used to return the string form of the specified parameter.
Syntax:
string ReflectionParameter::__toString ( void )
Parameters: This function does not accept any parameters.
Return Value: This function returns the string form of the specified parameter.
Below programs illustrate the ReflectionParameter::__toString() function in PHP:
Program 1:
<?php    // Initializing a user-defined class Company1 class Company1 {     public function GFG( $Parameter_1){} }     // Initializing a subclass Company2 class Company2 extends Company1 { }     // Using the ReflectionParameter over the above class $A = new ReflectionParameter(['Company2', 'GFG'], 0);     // Calling the __toString() function $B = $A->__toString();     // Getting the string form of the // specified parameter. var_dump($B); ?> |
Output:
string(40) "Parameter #0 [ <required> $Parameter_1 ]"
Program 2:
<?php     // Initializing some user-defined classes class Department1 {     function HR( $Full_Name){} } class Department2 {     function Coding( $Parameter2, $Par3 = 'Parameter_3'){} } class Department3 {     function Marketing( &$Parameter4, ...$Parameter5){} }     // Using the ReflectionParameter over the above classes $A = new ReflectionParameter(['Department1', 'HR'], 0); $B = new ReflectionParameter(['Department2', 'Coding'], 1); $C = new ReflectionParameter(['Department3', 'Marketing'], 1);     // Calling the __toString() function and // getting the string form of the // specified parameter. var_dump($A->__toString()); var_dump($B->__toString()); var_dump($C->__toString()); ?> |
Output:
string(38) "Parameter #0 [ <required> $Full_Name ]" string(49) "Parameter #1 [ <optional> $Par3 = 'Parameter_3' ]" string(42) "Parameter #1 [ <optional> ...$Parameter5 ]"
Reference: https://www.php.net/manual/en/reflectionparameter.tostring.php
