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<appendix xml:id="info.constants" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 &reftitle.constants;
 &extension.constants.core;
 <variablelist xml:id="constant.credits.constants" role="constant_list">
  <title>Pre-defined <function xmlns="http://docbook.org/ns/docbook">phpcredits</function> constants</title>
  <varlistentry xml:id="constant.credits-group">
   <term>
    <constant>CREDITS_GROUP</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     A list of the core developers
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.credits-general">
   <term>
    <constant>CREDITS_GENERAL</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     General credits: Language design and concept, PHP
     authors and SAPI module.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.credits-sapi">
   <term>
    <constant>CREDITS_SAPI</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     A list of the server API modules for PHP, and their authors.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.credits-modules">
   <term>
    <constant>CREDITS_MODULES</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     A list of the extension modules for PHP, and their authors.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.credits-docs">
   <term>
    <constant>CREDITS_DOCS</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     The credits for the documentation team.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.credits-fullpage">
   <term>
    <constant>CREDITS_FULLPAGE</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     Usually used in combination with the other flags. Indicates
     that a complete stand-alone HTML page needs to be
     printed including the information indicated by the other
     flags.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.credits-qa">
   <term>
    <constant>CREDITS_QA</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     The credits for the quality assurance team.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.credits-all">
   <term>
    <constant>CREDITS_ALL</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     All the credits, equivalent to using: <literal>CREDITS_DOCS
     | CREDITS_GENERAL | CREDITS_GROUP | CREDITS_MODULES | CREDITS_QA
     | CREDITS_FULLPAGE</literal>. It generates a complete stand-alone HTML
     page with the appropriate tags. This is the default value.
    </simpara>
   </listitem>
  </varlistentry>
 </variablelist>

 <variablelist xml:id="constant.info.constants" role="constant_list">
  <title><function xmlns="http://docbook.org/ns/docbook">phpinfo</function> constants</title>
  <varlistentry xml:id="constant.info-general">
   <term>
    <constant>INFO_GENERAL</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     The configuration line, &php.ini; location, build date, Web
     Server, System and more.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.info-credits">
   <term>
    <constant>INFO_CREDITS</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     PHP Credits.  See also <function xmlns="http://docbook.org/ns/docbook">phpcredits</function>.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.info-configuration">
   <term>
    <constant>INFO_CONFIGURATION</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     Current Local and Master values for PHP directives. See
     also <function xmlns="http://docbook.org/ns/docbook">ini_get</function>.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.info-modules">
   <term>
    <constant>INFO_MODULES</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     Loaded modules and their respective settings.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.info-environment">
   <term>
    <constant>INFO_ENVIRONMENT</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     Environment Variable information that's also available in
     <varname xmlns="http://docbook.org/ns/docbook">$_ENV</varname>.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.info-variables">
   <term>
    <constant>INFO_VARIABLES</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     Shows all <link xmlns="http://docbook.org/ns/docbook" linkend="language.variables.predefined">
     predefined variables</link> from <literal xmlns="http://docbook.org/ns/docbook">EGPCS</literal> (Environment, GET,
     POST, Cookie, Server).
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.info-license">
   <term>
    <constant>INFO_LICENSE</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     PHP License information.  See also the <link xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="&url.php.license;">license faq</link>.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.info-all">
   <term>
    <constant>INFO_ALL</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     Shows all of the above. This is the default value.
    </simpara>
   </listitem>
  </varlistentry>
 </variablelist>

 <variablelist xml:id="constant.ini-mode" role="constant_list">
  <title>INI mode constants</title>
  <varlistentry xml:id="constant.ini-user">
   <term>
    <constant>INI_USER</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     Entry can be set in user scripts (like with <function xmlns="http://docbook.org/ns/docbook">ini_set</function>)
     or in the <link xmlns="http://docbook.org/ns/docbook" linkend="configuration.changes.windows">Windows registry</link>.
     Entry can be set in &user-ini;
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.ini-perdir">
   <term>
    <constant>INI_PERDIR</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     Entry can be set in &php.ini;, &htaccess;, &httpd.conf; or &user-ini;
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.ini-system">
   <term>
    <constant>INI_SYSTEM</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     Entry can be set in &php.ini; or &httpd.conf;
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.ini-all">
   <term>
    <constant>INI_ALL</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     Entry can be set anywhere
    </simpara>
   </listitem>
  </varlistentry>
 </variablelist>

 <simpara>
  Assert constants, these values are used to set
  the assertion options in <function>assert_options</function>.
 </simpara>
 <variablelist xml:id="constant.assert.constants" role="constant_list">
  <title><function xmlns="http://docbook.org/ns/docbook">assert</function> constants</title>
  <varlistentry xml:id="constant.assert-active">
   <term>
    <constant>ASSERT_ACTIVE</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <para>
     Enable <function xmlns="http://docbook.org/ns/docbook">assert</function> evaluation.
     &warn.deprecated.feature-8-3-0;
    </para>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.assert-callback">
   <term>
    <constant>ASSERT_CALLBACK</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <para>
     Callback to call on failed assertions.
     &warn.deprecated.feature-8-3-0;
    </para>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.assert-bail">
   <term>
    <constant>ASSERT_BAIL</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <para>
     Terminate execution on failed assertions.
     &warn.deprecated.feature-8-3-0;
    </para>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.assert-exception">
   <term>
    <constant>ASSERT_EXCEPTION</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <para>
     Throws an <classname>AssertionError</classname> for each failed assertion
     &warn.deprecated.feature-8-3-0;
    </para>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.assert-warning">
   <term>
    <constant>ASSERT_WARNING</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <para>
     Issues a PHP warning for each failed assertion
     &warn.deprecated.feature-8-3-0;
    </para>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.assert-quiet-eval">
   <term>
    <constant>ASSERT_QUIET_EVAL</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <para>
     Disable <literal xmlns="http://docbook.org/ns/docbook">error_reporting</literal> during assertion expression evaluation.
     &warn.feature.removed-8-0-0;
    </para>
   </listitem>
  </varlistentry>
 </variablelist>

 <simpara>
  The following constants are only available if the host operating
  system is Windows, and can tell different versioning information
  so its possible to detect various features and make use of them.
 </simpara>
 <variablelist xml:id="constant.windows.constants" role="constant_list">
  <title>Windows specific constants</title>
  <varlistentry xml:id="constant.php-windows-version-major">
   <term>
    <constant>PHP_WINDOWS_VERSION_MAJOR</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     The major version of Windows, this can be either <literal xmlns="http://docbook.org/ns/docbook">4</literal> (NT4/Me/98/95),
     <literal xmlns="http://docbook.org/ns/docbook">5</literal> (XP/2003 R2/2003/2000) or <literal xmlns="http://docbook.org/ns/docbook">6</literal> (Vista/2008/7/8/8.1).
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.php-windows-version-minor">
   <term>
    <constant>PHP_WINDOWS_VERSION_MINOR</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     The minor version of Windows, this can be either <literal xmlns="http://docbook.org/ns/docbook">0</literal> (Vista/2008/2000/NT4/95),
     <literal xmlns="http://docbook.org/ns/docbook">1</literal> (XP), <literal xmlns="http://docbook.org/ns/docbook">2</literal> (2003 R2/2003/XP x64), <literal xmlns="http://docbook.org/ns/docbook">10</literal> (98)
     or <literal xmlns="http://docbook.org/ns/docbook">90</literal> (ME).
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.php-windows-version-build">
   <term>
    <constant>PHP_WINDOWS_VERSION_BUILD</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     The Windows build number (for example, Windows Vista with SP1 applied is build 6001)
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.php-windows-version-platform">
   <term>
    <constant>PHP_WINDOWS_VERSION_PLATFORM</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     The platform that PHP currently is running on, this value is <literal xmlns="http://docbook.org/ns/docbook">2</literal> on Windows
     Vista/XP/2000/NT4, Server 2008/2003 and on Windows ME/98/95 this value is <literal xmlns="http://docbook.org/ns/docbook">1</literal>.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.php-windows-version-sp-major">
   <term>
    <constant>PHP_WINDOWS_VERSION_SP_MAJOR</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     The major version of the service pack installed, this value is <literal xmlns="http://docbook.org/ns/docbook">0</literal>
     if no service pack is installed. For example, Windows XP with service pack 3 installed
     will make this value <literal xmlns="http://docbook.org/ns/docbook">3</literal>.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.php-windows-version-sp-minor">
   <term>
    <constant>PHP_WINDOWS_VERSION_SP_MINOR</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     The minor version of the service pack installed, this value is <literal xmlns="http://docbook.org/ns/docbook">0</literal>
     if no service pack is installed.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.php-windows-version-suitemask">
   <term>
    <constant>PHP_WINDOWS_VERSION_SUITEMASK</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     The suitemask is a bitmask that can tell if various features of Windows is installed,
     see the table below for possible bitfield values.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.php-windows-version-producttype">
   <term>
    <constant>PHP_WINDOWS_VERSION_PRODUCTTYPE</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     This contains the value used to determine the
     <literal>PHP_WINDOWS_NT_<replaceable>*</replaceable></literal>
     constants. This value may be one of the
     <literal>PHP_WINDOWS_NT_<replaceable>*</replaceable></literal> constants
     indicating the platform type.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.php-windows-nt-domain-controller">
   <term>
    <constant>PHP_WINDOWS_NT_DOMAIN_CONTROLLER</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     This is a domain controller
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.php-windows-nt-server">
   <term>
    <constant>PHP_WINDOWS_NT_SERVER</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     This is a server system (eg. Server 2008/2003/2000), note that if this is a
     domain controller its reported as <constant xmlns="http://docbook.org/ns/docbook">PHP_WINDOWS_NT_DOMAIN_CONTROLLER</constant>.
    </simpara>
   </listitem>
  </varlistentry>
  <varlistentry xml:id="constant.php-windows-nt-workstation">
   <term>
    <constant>PHP_WINDOWS_NT_WORKSTATION</constant>
    (<type>int</type>)
   </term>
   <listitem>
    <simpara>
     This is a workstation system (eg. Vista/XP/2000/NT4)
    </simpara>
   </listitem>
  </varlistentry>
 </variablelist>
 <simpara>
  This table shows a list of features that can be checked for using the
  <constant>PHP_WINDOWS_VERSION_SUITEMASK</constant> bitmask.
 </simpara>
 <table>
  <title>Windows suitemask bitfields</title>
  <tgroup cols="3">
   <thead>
    <row>
     <entry>Bits</entry>
     <entry>Description</entry>
    </row>
   </thead>
   <tbody>
    <row>
     <entry><literal>0x00000004</literal></entry>
     <entry>Microsoft BackOffice components are installed.</entry>
    </row>
    <row>
     <entry><literal>0x00000400</literal></entry>
     <entry>Windows Server 2003, Web Edition is installed.</entry>
    </row>
    <row>
     <entry><literal>0x00004000</literal></entry>
     <entry>Windows Server 2003, Compute Cluster Edition is installed.</entry>
    </row>
    <row>
     <entry><literal>0x00000080</literal></entry>
     <entry>
      Windows Server 2008 Datacenter, Windows Server 2003, Datacenter Edition or
      Windows 2000 Datacenter Server is installed.
     </entry>
    </row>
    <row>
     <entry><literal>0x00000002</literal></entry>
     <entry>
      Windows Server 2008 Enterprise, Windows Server 2003, Enterprise Edition,
      Windows 2000 Advanced Server, or Windows NT Server 4.0 Enterprise Edition
      is installed.
     </entry>
    </row>
    <row>
     <entry><literal>0x00000040</literal></entry>
     <entry>Windows XP Embedded is installed.</entry>
    </row>
    <row>
     <entry><literal>0x00000200</literal></entry>
     <entry>
      Windows Vista Home Premium, Windows Vista Home Basic, or Windows XP Home
      Edition is installed.
     </entry>
    </row>
    <row>
     <entry><literal>0x00000100</literal></entry>
     <entry>
      Remote Desktop is supported, but only one interactive session is supported.
      This value is set unless the system is running in application server mode.
     </entry>
    </row>
    <row>
     <entry><literal>0x00000001</literal></entry>
     <entry>
      Microsoft Small Business Server was once installed on the system, but may have
      been upgraded to another version of Windows.
     </entry>
    </row>
    <row>
     <entry><literal>0x00000020</literal></entry>
     <entry>
      Microsoft Small Business Server is installed with the restrictive client
      license in force.
     </entry>
    </row>
    <row>
     <entry><literal>0x00002000</literal></entry>
     <entry>Windows Storage Server 2003 R2 or Windows Storage Server 2003 is installed.</entry>
    </row>
    <row>
     <entry><literal>0x00000010</literal></entry>
     <entry>
      Terminal Services is installed. This value is always set. If this value is set but
      <literal>0x00000100</literal> is not set, then the system is running in application
      server mode.
     </entry>
    </row>
    <row>
     <entry><literal>0x00008000</literal></entry>
     <entry>Windows Home Server is installed.</entry>
    </row>
   </tbody>
  </tgroup>
 </table>
</appendix>

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