ReflectionExtension::isPersistent Returns whether this extension is persistent &reftitle.description; public boolReflectionExtension::isPersistent Check whether the extension is persistent. An extension is persistent when it is loaded using &php.ini;. An extension is temporary, not persistent, when it is loaded with dl. &reftitle.parameters; &no.function.parameters; &reftitle.returnvalues; Returns &true; for extensions loaded by extension, &false; otherwise. &reftitle.seealso; ReflectionExtension::isTemporary