Validation schemas for Application Packaging Standard 1.0 in XML Schema format

<?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/apache" xmlns:apache="http://apstandard.com/ns/1/apache">
  <xs:element name="htaccess">
    <xs:complexType/>
  </xs:element>
</xs:schema>

<?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/apache" xmlns:apache="http://apstandard.com/ns/1/apache">
  <xs:element name="required-module" type="xs:string"/>
</xs:schema>

<?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/aspnet" xmlns:aspnet="http://apstandard.com/ns/1/aspnet">
  <xs:element name="permissions">
    <xs:complexType>
      <xs:attribute name="writable">
        <xs:simpleType>
          <xs:restriction base="xs:token">
            <xs:enumeration value="true"/>
          </xs:restriction>
        </xs:simpleType>
      </xs:attribute>
    </xs:complexType>
  </xs:element>
</xs:schema>

<?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/aspnet" xmlns:aspnet="http://apstandard.com/ns/1/aspnet">
  <xs:element name="handler">
    <xs:complexType>
      <xs:choice>
        <xs:element ref="aspnet:disabled"/>
        <xs:element minOccurs="0" maxOccurs="unbounded" ref="aspnet:extension"/>
      </xs:choice>
    </xs:complexType>
  </xs:element>
  <xs:element name="disabled">
    <xs:complexType/>
  </xs:element>
  <xs:element name="extension" type="xs:string"/>
</xs:schema>

<?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/aspnet" xmlns:aspnet="http://apstandard.com/ns/1/aspnet">
  <xs:element name="version">
    <xs:simpleType>
      <xs:restriction base="xs:token">
        <xs:enumeration value="1.0"/>
        <xs:enumeration value="2.0"/>
      </xs:restriction>
    </xs:simpleType>
  </xs:element>
</xs:schema>

<?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" xmlns:sa="http://apstandard.com/ns/1">
  <xs:import namespace="http://www.w3.org/XML/1998/namespace"/>
  <xs:group name="AnyElement">
    <xs:sequence>
      <xs:any namespace="##other" processContents="lax"/>
    </xs:sequence>
  </xs:group>
  <xs:group name="DefinedByAspect">
    <xs:sequence>
      <xs:group ref="sa:AnyElement"/>
    </xs:sequence>
  </xs:group>
  <xs:group name="Requirement">
    <xs:sequence>
      <xs:group ref="sa:DefinedByAspect"/>
    </xs:sequence>
  </xs:group>
  <xs:group name="UrlHandler">
    <xs:sequence>
      <xs:group ref="sa:DefinedByAspect"/>
    </xs:sequence>
  </xs:group>
  <xs:group name="Permission">
    <xs:sequence>
      <xs:group ref="sa:DefinedByAspect"/>
    </xs:sequence>
  </xs:group>
  <xs:element name="setting">
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="0" maxOccurs="unbounded" name="name">
          <xs:complexType>
            <xs:simpleContent>
              <xs:extension base="xs:string">
                <xs:attribute ref="xml:lang"/>
              </xs:extension>
            </xs:simpleContent>
          </xs:complexType>
        </xs:element>
        <xs:element minOccurs="0" maxOccurs="unbounded" name="description">
          <xs:complexType>
            <xs:simpleContent>
              <xs:extension base="xs:string">
                <xs:attribute ref="xml:lang"/>
              </xs:extension>
            </xs:simpleContent>
          </xs:complexType>
        </xs:element>
        <xs:element minOccurs="0" maxOccurs="unbounded" ref="sa:error-message"/>
        <xs:element minOccurs="0" maxOccurs="unbounded" name="choice">
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="0" maxOccurs="unbounded" name="name">
                <xs:complexType mixed="true">
                  <xs:attribute ref="xml:lang"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
            <xs:attribute name="id" use="required"/>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
      <xs:attribute name="id" use="required"/>
      <xs:attribute name="global">
        <xs:simpleType>
          <xs:restriction base="xs:token">
            <xs:enumeration value="true"/>
          </xs:restriction>
        </xs:simpleType>
      </xs:attribute>
      <xs:attribute name="installation-only">
        <xs:simpleType>
          <xs:restriction base="xs:token">
            <xs:enumeration value="true"/>
          </xs:restriction>
        </xs:simpleType>
      </xs:attribute>
      <xs:attribute name="min">
        <xs:simpleType>
          <xs:union memberTypes="xs:integer xs:float"/>
        </xs:simpleType>
      </xs:attribute>
      <xs:attribute name="max">
        <xs:simpleType>
          <xs:union memberTypes="xs:integer xs:float"/>
        </xs:simpleType>
      </xs:attribute>
      <xs:attribute name="type" use="required">
        <xs:simpleType>
          <xs:restriction base="xs:token">
            <xs:enumeration value="boolean"/>
            <xs:enumeration value="string"/>
            <xs:enumeration value="password"/>
            <xs:enumeration value="integer"/>
            <xs:enumeration value="float"/>
            <xs:enumeration value="email"/>
            <xs:enumeration value="domain-name"/>
            <xs:enumeration value="enum"/>
          </xs:restriction>
        </xs:simpleType>
      </xs:attribute>
      <xs:attribute name="min-length" type="xs:nonNegativeInteger"/>
      <xs:attribute name="max-length" type="xs:nonNegativeInteger"/>
      <xs:attribute name="regex" type="xs:string"/>
      <xs:attribute name="charset" type="xs:string"/>
      <xs:attribute name="default-value"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="error-message">
    <xs:complexType>
      <xs:simpleContent>
        <xs:extension base="xs:string">
          <xs:attribute ref="xml:lang"/>
        </xs:extension>
      </xs:simpleContent>
    </xs:complexType>
  </xs:element>
  <xs:element name="group">
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="0" maxOccurs="unbounded" name="name">
          <xs:complexType>
            <xs:simpleContent>
              <xs:extension base="xs:string">
                <xs:attribute ref="xml:lang"/>
              </xs:extension>
            </xs:simpleContent>
          </xs:complexType>
        </xs:element>
        <xs:element maxOccurs="unbounded" ref="sa:setting"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="requirements">
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="0" maxOccurs="unbounded" name="choice">
          <xs:complexType>
            <xs:sequence>
              <xs:element maxOccurs="unbounded" name="requirements">
                <xs:complexType>
                  <xs:group maxOccurs="unbounded" ref="sa:Requirement"/>
                  <xs:attribute name="id" use="required"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <xs:group minOccurs="0" maxOccurs="unbounded" ref="sa:Requirement"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="mapping">
    <xs:complexType>
      <xs:sequence>
        <xs:choice minOccurs="0" maxOccurs="unbounded">
          <xs:group ref="sa:UrlHandler"/>
          <xs:group ref="sa:Permission"/>
        </xs:choice>
        <xs:element minOccurs="0" maxOccurs="unbounded" ref="sa:mapping"/>
      </xs:sequence>
      <xs:attribute name="url" use="required"/>
      <xs:attribute name="path">
        <xs:simpleType>
          <xs:restriction base="xs:string">
            <xs:minLength value="1"/>
          </xs:restriction>
        </xs:simpleType>
      </xs:attribute>
      <xs:attribute name="virtual">
        <xs:simpleType>
          <xs:restriction base="xs:token">
            <xs:enumeration value="virtual"/>
          </xs:restriction>
        </xs:simpleType>
      </xs:attribute>
    </xs:complexType>
  </xs:element>
  <xs:element name="application">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="name" type="xs:string"/>
        <xs:element minOccurs="0" ref="sa:packager-uri"/>
        <xs:element name="version" type="xs:string"/>
        <xs:element ref="sa:release"/>
        <xs:element minOccurs="0" ref="sa:homepage"/>
        <xs:element minOccurs="0" ref="sa:package-homepage"/>
        <xs:element minOccurs="0" ref="sa:default-prefix"/>
        <xs:element minOccurs="0" maxOccurs="unbounded" ref="sa:summary"/>
        <xs:element minOccurs="0" maxOccurs="unbounded" name="description">
          <xs:complexType mixed="true">
            <xs:attribute ref="xml:lang"/>
          </xs:complexType>
        </xs:element>
        <xs:element minOccurs="0" ref="sa:icon"/>
        <xs:element minOccurs="0" maxOccurs="unbounded" ref="sa:screenshot"/>
        <xs:element minOccurs="0" ref="sa:license"/>
        <xs:element minOccurs="0" ref="sa:configuration-script-language"/>
        <xs:choice minOccurs="0">
          <xs:element ref="sa:patchable-from"/>
          <xs:element maxOccurs="unbounded" ref="sa:patches"/>
        </xs:choice>
        <xs:choice minOccurs="0">
          <xs:element ref="sa:upgradable-from"/>
          <xs:element maxOccurs="unbounded" ref="sa:upgrades"/>
        </xs:choice>
        <xs:element ref="sa:changelog"/>
        <xs:element minOccurs="0" ref="sa:entry-points"/>
        <xs:element minOccurs="0" ref="sa:installed-size"/>
        <xs:element minOccurs="0" ref="sa:categories"/>
        <xs:element minOccurs="0" ref="sa:languages"/>
        <xs:element ref="sa:settings"/>
        <xs:element ref="sa:requirements"/>
        <xs:element ref="sa:mapping"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="packager-uri" type="xs:anyURI"/>
  <xs:element name="release" type="xs:string"/>
  <xs:element name="homepage" type="xs:anyURI"/>
  <xs:element name="package-homepage" type="xs:anyURI"/>
  <xs:element name="default-prefix" type="xs:string"/>
  <xs:element name="summary">
    <xs:complexType mixed="true">
      <xs:attribute ref="xml:lang"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="icon">
    <xs:complexType>
      <xs:attribute name="path" use="required"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="screenshot">
    <xs:complexType>
      <xs:sequence>
        <xs:element maxOccurs="unbounded" name="description">
          <xs:complexType mixed="true">
            <xs:attribute ref="xml:lang"/>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
      <xs:attribute name="path" use="required"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="license">
    <xs:complexType>
      <xs:sequence>
        <xs:element maxOccurs="unbounded" ref="sa:text"/>
      </xs:sequence>
      <xs:attribute name="must-accept" use="required" type="xs:boolean"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="text">
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="0" name="name" type="xs:string"/>
        <xs:choice>
          <xs:element ref="sa:url"/>
          <xs:element ref="sa:file"/>
        </xs:choice>
      </xs:sequence>
      <xs:attribute ref="xml:lang"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="url" type="xs:anyURI"/>
  <xs:element name="file" type="xs:string"/>
  <xs:element name="configuration-script-language" type="xs:string"/>
  <xs:element name="patchable-from">
    <xs:complexType>
      <xs:attribute name="version" use="required"/>
      <xs:attribute name="release" use="required"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="patches">
    <xs:complexType>
      <xs:attribute name="version" use="required"/>
      <xs:attribute name="release" use="required"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="upgradable-from">
    <xs:complexType>
      <xs:attribute name="version" use="required"/>
      <xs:attribute name="release" use="required"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="upgrades">
    <xs:complexType>
      <xs:attribute name="version" use="required"/>
      <xs:attribute name="release" use="required"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="changelog">
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="0" maxOccurs="unbounded" name="version">
          <xs:complexType>
            <xs:sequence>
              <xs:element maxOccurs="unbounded" name="entry">
                <xs:complexType mixed="true">
                  <xs:attribute ref="xml:lang"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
            <xs:attribute name="version" use="required"/>
            <xs:attribute name="release" use="required"/>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="entry-points">
    <xs:complexType>
      <xs:sequence>
        <xs:element maxOccurs="unbounded" name="entry">
          <xs:complexType>
            <xs:sequence>
              <xs:element ref="sa:path"/>
              <xs:element maxOccurs="unbounded" ref="sa:label"/>
              <xs:element minOccurs="0" maxOccurs="unbounded" name="description">
                <xs:complexType mixed="true">
                  <xs:attribute ref="xml:lang"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="path" type="xs:anyURI"/>
  <xs:element name="label">
    <xs:complexType mixed="true">
      <xs:attribute ref="xml:lang"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="installed-size" type="xs:nonNegativeInteger"/>
  <xs:element name="categories">
    <xs:complexType>
      <xs:sequence>
        <xs:element maxOccurs="unbounded" ref="sa:category"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="category" type="xs:string"/>
  <xs:element name="languages">
    <xs:complexType>
      <xs:sequence>
        <xs:element maxOccurs="unbounded" ref="sa:language"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="language">
    <xs:simpleType>
      <xs:restriction base="xs:string">
        <xs:pattern value="[a-z]{2,3}"/>
      </xs:restriction>
    </xs:simpleType>
  </xs:element>
  <xs:element name="settings">
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="0" maxOccurs="unbounded" ref="sa:setting"/>
        <xs:element minOccurs="0" maxOccurs="unbounded" ref="sa:group"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
</xs:schema>

<?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/cgi" xmlns:cgi="http://apstandard.com/ns/1/cgi" xmlns:h="http://apstandard.com/ns/1/cgi/handlers">
  <xs:import namespace="http://apstandard.com/ns/1/cgi/handlers" schemaLocation="h.xsd"/>
  <xs:attributeGroup name="handlerType">
    <xs:attribute ref="h:handler-type" use="required"/>
  </xs:attributeGroup>
  <xs:element name="handler">
    <xs:complexType>
      <xs:choice>
        <xs:element ref="cgi:disabled"/>
        <xs:element minOccurs="0" maxOccurs="unbounded" ref="cgi:extension"/>
        <xs:element ref="cgi:all-files"/>
      </xs:choice>
    </xs:complexType>
  </xs:element>
  <xs:element name="disabled">
    <xs:complexType/>
  </xs:element>
  <xs:element name="extension">
    <xs:complexType mixed="true">
      <xs:attribute ref="h:handler-type"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="all-files">
    <xs:complexType>
      <xs:attribute ref="h:handler-type"/>
    </xs:complexType>
  </xs:element>
</xs:schema>

<?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/db" xmlns:d="http://apstandard.com/ns/1/db">
  <xs:element name="db">
    <xs:complexType>
      <xs:sequence>
        <xs:element ref="d:id"/>
        <xs:element minOccurs="0" ref="d:default-name"/>
        <xs:element ref="d:can-use-tables-prefix"/>
        <xs:element ref="d:server-type"/>
        <xs:element ref="d:server-min-version"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="id" type="xs:string"/>
  <xs:element name="default-name" type="xs:string"/>
  <xs:element name="can-use-tables-prefix" type="xs:boolean"/>
  <xs:element name="server-type" type="xs:string"/>
  <xs:element name="server-min-version" type="xs:string"/>
</xs:schema>

<?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/cgi/handlers" xmlns:cgi="http://apstandard.com/ns/1/cgi" xmlns:h="http://apstandard.com/ns/1/cgi/handlers">
  <xs:import namespace="http://apstandard.com/ns/1/cgi" schemaLocation="cgi-urlhandler.xsd"/>
  <xs:attribute name="handler-type">
    <xs:simpleType>
      <xs:restriction base="xs:token">
        <xs:enumeration value="executable"/>
        <xs:enumeration value="perl"/>
        <xs:enumeration value="php"/>
        <xs:enumeration value="python"/>
        <xs:enumeration value="ssi"/>
      </xs:restriction>
    </xs:simpleType>
  </xs:attribute>
</xs:schema>

<?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="allow-url-fopen" type="xs:boolean"/>
</xs:schema>

<?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>

<?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="file-uploads" type="xs:boolean"/>
</xs:schema>

<?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="function" type="xs:string"/>
</xs:schema>

<?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="magic-quotes-gpc" type="xs:boolean"/>
</xs:schema>

<?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="max-execution-time" type="xs:integer"/>
</xs:schema>

<?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="memory-limit" type="xs:integer"/>
</xs:schema>

<?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="permissions">
    <xs:complexType>
      <xs:attribute name="writable">
        <xs:simpleType>
          <xs:restriction base="xs:token">
            <xs:enumeration value="true"/>
          </xs:restriction>
        </xs:simpleType>
      </xs:attribute>
      <xs:attribute name="readable">
        <xs:simpleType>
          <xs:restriction base="xs:token">
            <xs:enumeration value="false"/>
          </xs:restriction>
        </xs:simpleType>
      </xs:attribute>
    </xs:complexType>
  </xs:element>
</xs:schema>

<?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="post-max-size" type="xs:integer"/>
</xs:schema>

<?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="register-globals" type="xs:boolean"/>
</xs:schema>

<?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="safe-mode" type="xs:boolean"/>
</xs:schema>

<?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="short-open-tag" type="xs:boolean"/>
</xs:schema>

<?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="handler">
    <xs:complexType>
      <xs:choice>
        <xs:element ref="php:disabled"/>
        <xs:element minOccurs="0" maxOccurs="unbounded" ref="php:extension"/>
      </xs:choice>
    </xs:complexType>
  </xs:element>
  <xs:element name="disabled">
    <xs:complexType/>
  </xs:element>
  <xs:element name="extension" type="xs:string"/>
</xs:schema>

<?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="version">
    <xs:complexType>
      <xs:attribute name="min"/>
      <xs:attribute name="max-not-including"/>
    </xs:complexType>
  </xs:element>
</xs:schema>