ReflectionParameter::isDefaultValueAvailable	ReflectionParameter::isOptional

ReflectionParameter	Last updated: Mon, 26 Oct 2026

ReflectionParameter::isDefaultValueConstant

(PHP 5 >= 5.4.6, PHP 7, PHP 8)

ReflectionParameter::isDefaultValueConstant — Returns whether the default value of this parameter is a constant

public function ReflectionParameter::isDefaultValueConstant(): bool

Returns whether the default value of this parameter is a constant.

This function has no parameters.

Returns true if the default value is constant, and false otherwise.