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DocumentationHackReferenceClassReflectionParameterisDefaultValueConstant

ReflectionParameter::isDefaultValueConstant

( excerpt from http://php.net/manual/en/reflectionparameter.isdefaultvalueconstant.php )

public function isDefaultValueConstant(): ?bool;

Returns TRUE if the default value is constant, FALSE if it is not or NULL on failure.

Returns

  • bool - If parameters default value is constant, or NULL if a default value does not exist.