How to create default function parameter in PHP? (original) (raw)

Last Updated : 12 Jul, 2025

The default parameter concept comes from C++ style default argument values, same as in PHP you can provide default parameters so that when a parameter is not passed to the function. Then it is still available within the function with a pre-defined value. This function also can be called optional parameter.

Syntax:

function greeting($name=" parameter_value ")

Parameter: This function accepts a single parameter that is $name here, holds the parameter value.

Below examples illustrate the procedure to create and use the default function parameter.

Example 1:

php `

`

Output:

Welcome to Gfg Welcome to GeeksforGeeks Welcome to A Computer Science Portal

Example 2:

php `

`

Output:

Greeting: GeeksforGeeks A Computer Science Portal for Geeks Greeting: night_fury A Computer Science Portal for Geeks Greeting: night_fury Contributor