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