<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" targetNamespace="http://apstandard.com/ns/1/php" xmlns:php="http://apstandard.com/ns/1/php">
  <xs:element name="extension" type="xs:string"/>
</xs:schema>