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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.13 $ -->
<!-- splitted from ./en/functions/info.xml, last change in rev 1.2 -->
<refentry id="function.phpinfo">
<refnamediv>
<refname>phpinfo</refname>
<refpurpose>Outputs lots of PHP information</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>int</type><methodname>phpinfo</methodname>
<methodparam choice="opt"><type>int</type><parameter>what</parameter></methodparam>
</methodsynopsis>
<para>
Outputs a large amount of information about the current state of
PHP. This includes information about PHP compilation options and
extensions, the PHP version, server information and environment
(if compiled as a module), the PHP environment, OS version
information, paths, master and local values of configuration
options, HTTP headers, and the PHP License.
</para>
<para>
Because every system is setup differently,
<function>phpinfo</function> is commonly used to check <link
linkend="configuration">configuration settings</link> and for
available <link
linkend="language.variables.predefined">predefined
variables</link> on a given system. Also,
<function>phpinfo</function> is a valuable debugging tool as it
contains all EGPCS (Environment, GET, POST, Cookie, Server) data.
</para>
<para>
The output may be customized by passing one or more of the
following <emphasis>constants</emphasis> bitwise values summed
together in the optional <parameter>what</parameter> parameter.
One can also combine the respective constants or bitwise values
together with the <link
linkend="language.operators.bitwise">or</link> operator.
</para>
<para>
<table>
<title><function>phpinfo</function> options</title>
<tgroup cols="3">
<thead>
<row>
<entry>Name (constant)</entry>
<entry>Value</entry>
<entry>Description</entry>
</row>
</thead>
<tbody>
<row>
<entry>INFO_GENERAL</entry>
<entry>1</entry>
<entry>
The configuration line, &php.ini; location, build date, Web
Server, System and more.
</entry>
</row>
<row>
<entry>INFO_CREDITS</entry>
<entry>2</entry>
<entry>
PHP Credits. See also <function>phpcredits</function>.
</entry>
</row>
<row>
<entry>INFO_CONFIGURATION</entry>
<entry>4</entry>
<entry>
Current Local and Master values for PHP directives. See
also <function>ini_get</function>.
</entry>
</row>
<row>
<entry>INFO_MODULES</entry>
<entry>8</entry>
<entry>
Loaded modules and their respective settings. See also
<function>get_loaded_extensions</function>.
</entry>
</row>
<row>
<entry>INFO_ENVIRONMENT</entry>
<entry>16</entry>
<entry>
Environment Variable information that's also available in
<varname>$_ENV</varname>.
</entry>
</row>
<row>
<entry>INFO_VARIABLES</entry>
<entry>32</entry>
<entry>
Shows all <link linkend="language.variables.predefined">
predefined variables</link> from EGPCS (Environment, GET,
POST, Cookie, Server).
</entry>
</row>
<row>
<entry>INFO_LICENSE</entry>
<entry>64</entry>
<entry>
PHP License information. See also the <ulink
url="&url.php.license;">license FAQ</ulink>.
</entry>
</row>
<row>
<entry>INFO_ALL</entry>
<entry>-1</entry>
<entry>
Shows all of the above. This is the default value.
</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
<para>
<example>
<title><function>phpinfo</function> examples</title>
<programlisting role="php">
<![CDATA[
<?php
// Show all information, defaults to INFO_ALL
phpinfo();
// Show just the module information.
// phpinfo(8) yields identical results.
phpinfo(INFO_MODULES);
?>
]]>
</programlisting>
</example>
</para>
<note>
<para>
Parts of the information displayed are disabled when the
<link linkend="ini.expose-php">expose_php</link> configuration setting
is set to <literal>off</literal>. This includes the PHP and Zend logos,
and the credits.
</para>
</note>
<note>
<para>
<function>phpinfo</function> outputs plain text instead of HTML when
using the CLI mode.
</para>
</note>
<para>
See also <function>phpversion</function>,
<function>phpcredits</function>,
<function>php_logo_guid</function>,
<function>ini_get</function>,
<function>ini_set</function>,
<function>get_loaded_extensions</function>,
and the section on <link
linkend="language.variables.predefined">Predefined
Variables</link>.
</para>
</refsect1>
</refentry>
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sgml-minimize-attributes:nil
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|
