<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >phpinfo</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="PHP 手册" HREF="index.html"><LINK REL="UP" TITLE="PHP Options&Information" HREF="ref.info.html"><LINK REL="PREVIOUS" TITLE="phpcredits" HREF="function.phpcredits.html"><LINK REL="NEXT" TITLE="phpversion" HREF="function.phpversion.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP 手册</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.phpcredits.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.phpversion.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.phpinfo" ></A >phpinfo</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN182114" ></A ><P > (PHP 3, PHP 4, PHP 5)</P >phpinfo -- Outputs lots of PHP information</DIV ><DIV CLASS="refsect1" ><A NAME="AEN182117" ></A ><H2 >说明</H2 >bool <B CLASS="methodname" >phpinfo</B > ( [int what] )<BR ></BR ><P > 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. </P ><P > Because every system is setup differently, <B CLASS="function" >phpinfo()</B > is commonly used to check <A HREF="configuration.html" >configuration settings</A > and for available <A HREF="language.variables.predefined.html" >predefined variables</A > on a given system. </P ><P > <B CLASS="function" >phpinfo()</B > is also a valuable debugging tool as it contains all EGPCS (Environment, GET, POST, Cookie, Server) data. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN182132" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >what</CODE ></DT ><DD ><P > The output may be customized by passing one or more of the following <SPAN CLASS="emphasis" ><I CLASS="emphasis" >constants</I ></SPAN > bitwise values summed together in the optional <CODE CLASS="parameter" >what</CODE > parameter. One can also combine the respective constants or bitwise values together with the <A HREF="language.operators.bitwise.html" >or</A > operator. </P ><P > <DIV CLASS="table" ><A NAME="AEN182145" ></A ><P ><B >表 1. <B CLASS="function" >phpinfo()</B > options</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><COL><THEAD ><TR ><TH >Name (constant)</TH ><TH >Value</TH ><TH >Description</TH ></TR ></THEAD ><TBODY ><TR ><TD >INFO_GENERAL</TD ><TD >1</TD ><TD > The configuration line, <TT CLASS="filename" >php.ini</TT > location, build date, Web Server, System and more. </TD ></TR ><TR ><TD >INFO_CREDITS</TD ><TD >2</TD ><TD > PHP Credits. See also <A HREF="function.phpcredits.html" ><B CLASS="function" >phpcredits()</B ></A >. </TD ></TR ><TR ><TD >INFO_CONFIGURATION</TD ><TD >4</TD ><TD > Current Local and Master values for PHP directives. See also <A HREF="function.ini-get.html" ><B CLASS="function" >ini_get()</B ></A >. </TD ></TR ><TR ><TD >INFO_MODULES</TD ><TD >8</TD ><TD > Loaded modules and their respective settings. See also <A HREF="function.get-loaded-extensions.html" ><B CLASS="function" >get_loaded_extensions()</B ></A >. </TD ></TR ><TR ><TD >INFO_ENVIRONMENT</TD ><TD >16</TD ><TD > Environment Variable information that's also available in <CODE CLASS="varname" >$_ENV</CODE >. </TD ></TR ><TR ><TD >INFO_VARIABLES</TD ><TD >32</TD ><TD > Shows all <A HREF="language.variables.predefined.html" > predefined variables</A > from EGPCS (Environment, GET, POST, Cookie, Server). </TD ></TR ><TR ><TD >INFO_LICENSE</TD ><TD >64</TD ><TD > PHP License information. See also the <A HREF="http://www.php.net/license/" TARGET="_top" >license FAQ</A >. </TD ></TR ><TR ><TD >INFO_ALL</TD ><TD >-1</TD ><TD > Shows all of the above. This is the default value. </TD ></TR ></TBODY ></TABLE ></DIV > </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN182194" ></A ><H2 >返回值</H2 ><P > 如果成功则返回 <TT CLASS="constant" ><B >TRUE</B ></TT >,失败则返回 <TT CLASS="constant" ><B >FALSE</B ></TT >。 </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN182199" ></A ><H2 >范例</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN182202" ></A ><P ><B >例 1. <B CLASS="function" >phpinfo()</B > Example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /><br /></font><font color="#FF8000">// Show all information, defaults to INFO_ALL<br /></font><font color="#0000BB">phpinfo</font><font color="#007700">();<br /><br /></font><font color="#FF8000">// Show just the module information.<br />// phpinfo(8) yields identical results.<br /></font><font color="#0000BB">phpinfo</font><font color="#007700">(</font><font color="#0000BB">INFO_MODULES</font><font color="#007700">);<br /><br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN182206" ></A ><H2 >注释</H2 ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >注意: </B > Parts of the information displayed are disabled when the <A HREF="ini.core.html#ini.expose-php" >expose_php</A > configuration setting is set to <TT CLASS="literal" >off</TT >. This includes the PHP and Zend logos, and the credits. </P ></BLOCKQUOTE ></DIV ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >注意: </B > <B CLASS="function" >phpinfo()</B > outputs plain text instead of HTML when using the CLI mode. </P ></BLOCKQUOTE ></DIV ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN182215" ></A ><H2 >参见</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.phpversion.html" ><B CLASS="function" >phpversion()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.phpcredits.html" ><B CLASS="function" >phpcredits()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.php-logo-guid.html" ><B CLASS="function" >php_logo_guid()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.ini-get.html" ><B CLASS="function" >ini_get()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.ini-set.html" ><B CLASS="function" >ini_set()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.get-loaded-extensions.html" ><B CLASS="function" >get_loaded_extensions()</B ></A ></TD ></TR ><TR ><TD ><A HREF="language.variables.predefined.html" >Predefined Variables</A ></TD ></TR ></TBODY ></TABLE ><P ></P > </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.phpcredits.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >起始页</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.phpversion.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >phpcredits</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.info.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >phpversion</TD ></TR ></TABLE ></DIV ></BODY ></HTML >