Thanks david_ross
It gave me a lot of data. Some of thema are as follows:
[root@c83-250-89-72 php-4.4.0]# echo "<? phpinfo(); ?>" > phpinfo.php
[root@c83-250-89-72 php-4.4.0]# php phpinfo.php
Content-type: text/html
X-Powered-By: PHP/4.4.0
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd">
<html><head>
<style type="text/css"><!--
body {background-color: #ffffff; color: #000000;}
body, td, th, h1, h2 {font-family: sans-serif;}
pre {margin: 0px; font-family: monospace;}
a:link {color: #000099; text-decoration: none; background-color: #ffffff;}
a:hover {text-decoration: underline;}
table {border-collapse: collapse;}
.center {text-align: center;}
.center table { margin-left: auto; margin-right: auto; text-align: left;}
.center th { text-align: center !important; }
td, th { border: 1px solid #000000; font-size: 75%; vertical-align: baseline;}
h1 {font-size: 150%;}
h2 {font-size: 125%;}
.p {text-align: left;}
.e {background-color: #ccccff; font-weight: bold; color: #000000;}
.h {background-color: #9999cc; font-weight: bold; color: #000000;}
.v {background-color: #cccccc; color: #000000;}
i {color: #666666; background-color: #cccccc;}
img {float: right; border: 0px;}
hr {width: 600px; background-color: #cccccc; border: 0px; height: 1px; color: #000000;}
//--></style>
<title>phpinfo()</title></head>
<body><div class="center">
<table border="0" cellpadding="3" width="600">
<tr class="h"><td>
<a href="http://www.php.net/"><img border="0" src="?=PHPE9568F34-D428-11d2-A769-00AA001ACF42" alt="PHP Logo" /></a><h1 class="p">PHP Version 4.4.0</h1>
</td></tr>
</table><br />
<table border="0" cellpadding="3" width="600">
<tr><td class="e">System </td><td class="v">Linux c83-250-89-72.bredband.comhem.se 2.6.3-7mdk #1 Wed Mar 17 15:56:42 CET 2004 i686 </td></tr>
<tr><td class="e">Build Date </td><td class="v">Sep 9 2005 21:10:29 </td></tr>
<tr><td class="e">Configure Command </td><td class="v"> './configure' </td></tr>
<tr><td class="e">Server API </td><td class="v">CGI </td></tr>
<tr><td class="e">Virtual Directory Support </td><td class="v">disabled </td></tr>
<tr><td class="e">Configuration File (php.ini) Path </td><td class="v">/usr/local/lib </td></tr>
<tr><td class="e">PHP API </td><td class="v">20020918 </td></tr>
<tr><td class="e">PHP Extension </td><td class="v">20020429 </td></tr>
<tr><td class="e">Zend Extension </td><td class="v">20050606 </td></tr>
<tr><td class="e">Debug Build </td><td class="v">no </td></tr>
<tr><td class="e">Zend Memory Manager </td><td class="v">enabled </td></tr>
<tr><td class="e">Thread Safety </td><td class="v">disabled </td></tr>
<tr><td class="e">Registered PHP Streams </td><td class="v">php, http, ftp </td></tr>
</table><br />
<table border="0" cellpadding="3" width="600">
<tr class="v"><td>
<tr><td class="e">safe_mode_include_dir</td><td class="v"><i>no value</i></td><td class="v"><i>no value</i></td></tr>
<tr><td class="e">sendmail_from</td><td class="v"><i>no value</i></td><td class="v"><i>no value</i></td></tr>
<tr><td class="e">sendmail_path</td><td class="v">/usr/sbin/sendmail -t -i </td><td class="v">/usr/sbin/sendmail -t -i </td></tr>
<tr><td class="e">serialize_precision</td><td class="v">100</td><td class="v">100</td></tr>
<tr><td class="e">short_open_tag</td><td class="v">On</td><td class="v">On</td></tr>
<tr><td class="e">SMTP</td><td class="v">localhost</td><td class="v">localhost</td></tr>
<tr><td class="e">smtp_port</td><td class="v">25</td><td class="v">25</td></tr>
<tr><td class="e">sql.safe_mode</td><td class="v">Off</td><td class="v">Off</td></tr>
<tr><td class="e">track_errors</td><td class="v">Off</td><td class="v">Off</td></tr>
<tr><td class="e">unserialize_callback_func</td><td class="v"><i>no value</i></td><td class="v"><i>no value</i></td></tr>
<tr><td class="e">upload_max_filesize</td><td class="v">2M</td><td class="v">2M</td></tr>
<tr><td class="e">upload_tmp_dir</td><td class="v"><i>no value</i></td><td class="v"><i>no value</i></td></tr>
<tr><td class="e">user_dir</td><td class="v"><i>no value</i></td><td class="v"><i>no value</i></td></tr>
<tr><td class="e">variables_order</td><td class="v"><i>no value</i></td><td class="v"><i>no value</i></td></tr>
<tr><td class="e">xmlrpc_error_number</td><td class="v">0</td><td class="v">0</td></tr>
<tr><td class="e">xmlrpc_errors</td><td class="v">Off</td><td class="v">Off</td></tr>
<tr><td class="e">y2k_compliance</td><td class="v">On</td><td class="v">On</td></tr>
</table><br />
<h2><a name="module_ctype">ctype</a></h2>
<table border="0" cellpadding="3" width="600">
<tr><td class="e">ctype functions </td><td class="v">enabled </td></tr>
</table><br />
<h2><a name="module_mysql">mysql</a></h2>
<table border="0" cellpadding="3" width="600">
<tr class="h"><th>MySQL Support</th><th>enabled</th></tr>
<tr><td class="e">Active Persistent Links </td><td class="v">0 </td></tr>
<tr><td class="e">Active Links </td><td class="v">0 </td></tr>
<tr><td class="e">Client API version </td><td class="v">3.23.49 </td></tr>
<tr><td class="e">MYSQL_MODULE_TYPE </td><td class="v">builtin </td></tr>
<tr><td class="e">MYSQL_SOCKET </td><td class="v">/var/lib/mysql/mysql.sock </td></tr>
<tr><td class="e">MYSQL_INCLUDE </td><td class="v"><i>no value</i> </td></tr>
<tr><td class="e">MYSQL_LIBS </td><td class="v"><i>no value</i> </td></tr>
</table><br />
<table border="0" cellpadding="3" width="600">
<tr class="h"><th>Directive</th><th>Local Value</th><th>Master Value</th></tr>
<tr><td class="e">mysql.allow_persistent</td><td class="v">On</td><td class="v">On</td></tr>
<tr><td class="e">mysql.connect_timeout</td><td class="v">60</td><td class="v">60</td></tr>
<tr><td class="e">mysql.default_host</td><td class="v"><i>no value</i></td><td class="v"><i>no value</i></td></tr>
<tr><td class="e">mysql.default_password</td><td class="v"><i>no value</i></td><td class="v"><i>no value</i></td></tr>
<tr><td class="e">mysql.default_port</td><td class="v"><i>no value</i></td><td class="v"><i>no value</i></td></tr>
<tr><td class="e">mysql.defau
<tr><td class="e">_ENV["DESKTOP"]</td><td class="v">kde</td></tr>
<tr><td class="e">_ENV["BROWSER"]</td><td class="v">kfmclient openProfile webbrowsing</td></tr>
<tr><td class="e">_ENV["DISPLAY"]</td><td class="v">:0.0</td></tr>
<tr><td class="e">_ENV["LC_TIME"]</td><td class="v">en_US</td></tr>
<tr><td class="e">_ENV["G_BROKEN_FILENAMES"]</td><td class="v">1</td></tr>
<tr><td class="e">_ENV["XAUTHORITY"]</td><td class="v">/root/.xauthylHLfg</td></tr>
<tr><td class="e">_ENV["LC_NAME"]</td><td class="v">sv_SE</td></tr>
<tr><td class="e">_ENV["COLORTERM"]</td><td class="v"><i>no value</i></td></tr>
<tr><td class="e">_ENV["_"]</td><td class="v">/usr/local/bin/php</td></tr>
<tr><td class="e">_ENV["OLDPWD"]</td><td class="v">/home/ka</td></tr>
</table><br />
<h2>PHP License</h2>
<table border="0" cellpadding="3" width="600">
<tr class="v"><td>
<p>
This program is free software; you can redistribute it and/or modify it under the terms of the PHP License as published by the PHP Group and included in the distribution in the file: LICENSE
</p>
<p>This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
</p>
<p>If you did not receive a copy of the PHP license, or have any questions about PHP licensing, please contact
license@php.net.
</p>
</td></tr>
</table><br />
</div></body></html>[root@c83-250-89-72 php-4.4.0]#
I didn't paste everything here. What is the meaning of these data?