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phpversion> <phpcredits
Last updated: Sun, 25 Nov 2007

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phpinfo

(PHP 4, PHP 5)

phpinfo — Outputs lots of PHP information

说明

bool phpinfo ([ int $what ] )

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.

Because every system is setup differently, phpinfo() is commonly used to check configuration settings and for available predefined variables on a given system.

phpinfo() is also a valuable debugging tool as it contains all EGPCS (Environment, GET, POST, Cookie, Server) data.

参数

what

The output may be customized by passing one or more of the following constants bitwise values summed together in the optional what parameter. One can also combine the respective constants or bitwise values together with the or operator.

phpinfo() options
Name (constant) Value Description
INFO_GENERAL 1 The configuration line, php.ini location, build date, Web Server, System and more.
INFO_CREDITS 2 PHP Credits. See also phpcredits().
INFO_CONFIGURATION 4 Current Local and Master values for PHP directives. See also ini_get().
INFO_MODULES 8 Loaded modules and their respective settings. See also get_loaded_extensions().
INFO_ENVIRONMENT 16 Environment Variable information that's also available in $_ENV.
INFO_VARIABLES 32 Shows all predefined variables from EGPCS (Environment, GET, POST, Cookie, Server).
INFO_LICENSE 64 PHP License information. See also the » license FAQ.
INFO_ALL -1 Shows all of the above. This is the default value.

返回值

如果成功则返回 TRUE,失败则返回 FALSE

范例

Example#1 phpinfo() Example

<?php

// Show all information, defaults to INFO_ALL
phpinfo();

// Show just the module information.
// phpinfo(8) yields identical results.
phpinfo(INFO_MODULES);

?>

注释

Note: Parts of the information displayed are disabled when the expose_php configuration setting is set to off. This includes the PHP and Zend logos, and the credits.

Note: phpinfo() outputs plain text instead of HTML when using the CLI mode.



phpversion> <phpcredits
Last updated: Sun, 25 Nov 2007
 
add a note add a note User Contributed Notes
phpinfo
jon at sitewizard dot ca
06-Jul-2008 10:54
To extract all of the data from phpinfo into a nested array:
<?php
ob_start
();
phpinfo();
$phpinfo = array('phpinfo' => array());
if(
preg_match_all('#(?:<h2>(?:<a name=".*?">)?(.*?)(?:</a>)?</h2>)|(?:<tr(?: class=".*?")?><t[hd](?: class=".*?")?>(.*?)\s*</t[hd]>(?:<t[hd](?: class=".*?")?>(.*?)\s*</t[hd]>(?:<t[hd](?: class=".*?")?>(.*?)\s*</t[hd]>)?)?</tr>)#s', ob_get_clean(), $matches, PREG_SET_ORDER))
    foreach(
$matches as $match)
        if(
strlen($match[1]))
           
$phpinfo[$match[1]] = array();
        elseif(isset(
$match[3]))
           
$phpinfo[end(array_keys($phpinfo))][$match[2]] = isset($match[4]) ? array($match[3], $match[4]) : $match[3];
        else
           
$phpinfo[end(array_keys($phpinfo))][] = $match[2];
?>

Some examples of using individual values from the array:

<?php
   
echo "System: {$phpinfo['phpinfo']['System']}<br />\n";
    echo
"Safe Mode: {$phpinfo['PHP Core']['safe_mode'][0]}<br />\n";
    echo
"License: {$phpinfo['PHP License'][0]}<br />\n";
?>

To display everything:

<?php
   
foreach($phpinfo as $name => $section) {
        echo
"<h3>$name</h3>\n<table>\n";
        foreach(
$section as $key => $val) {
            if(
is_array($val))
                echo
"<tr><td>$key</td><td>$val[0]</td><td>$val[1]</td></tr>\n";
            elseif(
is_string($key))
                echo
"<tr><td>$key</td><td>$val</td></tr>\n";
            else
                echo
"<tr><td>$val</td></tr>\n";
        }
        echo
"</table>\n";
    }
?>

Note: In order to properly retrieve all of the data, the regular expression matches table headers as well as table data, resulting in 'Local Value' and 'Global Value' showing up as 'Directive' entries.
yurkins
23-Jun-2008 10:24
big thanx 2 Mardy dot Hutchinson at gmail dot com
very good!

some fixes to correct result displaying:
1. we need to trim $matches [1], 'cause there can be empty lines;
2. not bad to remove <body> tag 'cause styles for it not apply correctly...
3. ...and change styles a little (remove "body" selector)

we need to change two lines:

<?php
preg_match
('%<style type="text/css">(.*?)</style>.*?(<body>.*</body>)%s', ob_get_clean(), $matches);
?>
to
<?php
preg_match
('%<style type="text/css">(.*?)</style>.*?<body>(.*?)</body>%s', ob_get_clean(), $matches);
?>

and

<?php
preg_split
( '/\n/', $matches[1] )
?>
to
<?php
preg_split
( '/\n/', trim(preg_replace( "/\nbody/", "\n", $matches[1])) )
?>

That's all! Now we have a really flexible addition to phpinfo();
Mardy dot Hutchinson at gmail dot com
10-Sep-2007 06:27
Embedding phpinfo within your page, that already has style information:

The phpinfo output is wrapped within a <div class='phpinfodisplay'>, and we privatize all the style selectors that phpinfo() creates.

Yes, we cheat on preparing the selector list.

<?php
ob_start
();
phpinfo();

preg_match ('%<style type="text/css">(.*?)</style>.*?(<body>.*</body>)%s', ob_get_clean(), $matches);

# $matches [1]; # Style information
# $matches [2]; # Body information

echo "<div class='phpinfodisplay'><style type='text/css'>\n",
   
join( "\n",
       
array_map(
           
create_function(
               
'$i',
               
'return ".phpinfodisplay " . preg_replace( "/,/", ",.phpinfodisplay ", $i );'
               
),
           
preg_split( '/\n/', $matches[1] )
            )
        ),
   
"</style>\n",
   
$matches[2],
   
"\n</div>\n";
?>

Perhaps one day the phpinfo() function will be modified to output such a safe string on its own.
Andrew dot Boag at catalyst dot net dot nz
09-Sep-2007 03:47
One note on the above functions for cleaning up the phpinfo() HTML and throwing it into an array data structure. In order to catch all of the info tidbits the preg_match_all has to be tweaked to deal with 2 and 3 column tables.

I have changed the preg_match_all() here so that the last <td></td> is optional

<?php
function parsePHPConfig() {
   
ob_start();
   
phpinfo(-1);
   
$s = ob_get_contents();
   
ob_end_clean();
   
$a = $mtc = array();
    if (
preg_match_all('/<tr><td class="e">(.*?)<\/td><td class="v">(.*?)<\/td>(:?<td class="v">(.*?)<\/td>)?<\/tr>/',$s,$mtc,PREG_SET_ORDER))
        foreach(
$mtc as $v){
            if(
$v[2] == '<i>no value</i>') continue;
           
$a[$v[1]] = $v[2];
        }
    }
    return
$a;
}
?>
jo at durchholz dot org
14-Aug-2007 05:43
Here's a variant of "print it without headers, but include the style information":

<?php
ob_start
();
phpinfo();
$info = ob_get_clean ();

$matches = array ();
$i = preg_match ('%(<style type="text/css">.*</style>).*<body>(.*)</body>%s', $info, $matches);

print
$matches [1]; # Style information
print $matches [2]; # Body
dev at cheechtech dot com
07-Jan-2007 05:35
same as above for configuration variables

<?php
function parsePHPConfig() {
   
ob_start();
   
phpinfo(INFO_CONFIGURATION);
   
$s = ob_get_contents();
   
ob_end_clean();
   
$a = $mtc = array();
    if (
preg_match_all('/<tr><td class="e">(.*?)<\/td><td class="v">(.*?)<\/td><td class="v">(.*?)<\/td><\/tr>/',$s,$mtc,PREG_SET_ORDER)) {
        foreach(
$mtc as $v){
            if(
$v[2] == '<i>no value</i>') continue;
           
$a[$v[1]] = $v[2];
        }
    }
    return
$a;
}
?>
jb2386 at hotmail dot com
11-Oct-2006 12:29
This is a slight modification to the previous code by "code at adspeed dot com" that extracts the PHP modules as an array. I used it on PHP 4.1.2 and it failed as the <h2> tags also had an align="center". So this update changes the regex for those tags:

<?php

/* parse php modules from phpinfo */

function parsePHPModules() {
 
ob_start();
 
phpinfo(INFO_MODULES);
 
$s = ob_get_contents();
 
ob_end_clean();

 
$s = strip_tags($s,'<h2><th><td>');
 
$s = preg_replace('/<th[^>]*>([^<]+)<\/th>/',"<info>\\1</info>",$s);
 
$s = preg_replace('/<td[^>]*>([^<]+)<\/td>/',"<info>\\1</info>",$s);
 
$vTmp = preg_split('/(<h2[^>]*>[^<]+<\/h2>)/',$s,-1,PREG_SPLIT_DELIM_CAPTURE);
 
$vModules = array();
 for (
$i=1;$i<count($vTmp);$i++) {
  if (
preg_match('/<h2[^>]*>([^<]+)<\/h2>/',$vTmp[$i],$vMat)) {
  
$vName = trim($vMat[1]);
  
$vTmp2 = explode("\n",$vTmp[$i+1]);
   foreach (
$vTmp2 AS $vOne) {
  
$vPat = '<info>([^<]+)<\/info>';
  
$vPat3 = "/$vPat\s*$vPat\s*$vPat/";
  
$vPat2 = "/$vPat\s*$vPat/";
   if (
preg_match($vPat3,$vOne,$vMat)) { // 3cols
    
$vModules[$vName][trim($vMat[1])] = array(trim($vMat[2]),trim($vMat[3]));
   } elseif (
preg_match($vPat2,$vOne,$vMat)) { // 2cols
    
$vModules[$vName][trim($vMat[1])] = trim($vMat[2]);
   }
   }
  }
 }
 return
$vModules;
}
?>
php at SPAMMENOT dot tof2k dot com
10-Sep-2006 06:32
To obtain a phpinfo without headers (and css) :

<?php
ob_start
();                                                                                                       
phpinfo();                                                                                                        
$info = ob_get_contents();                                                                                        
ob_end_clean();                                                                                                   

$info = preg_replace('%^.*<body>(.*)</body>.*$%ms', '$1', $info);
?>

You can then style your tables & headings :)
code at adspeed dot com
10-Dec-2005 07:31
This function parses the phpinfo output to get details about a PHP module.

<?php
/** parse php modules from phpinfo */
function parsePHPModules() {
 
ob_start();
 
phpinfo(INFO_MODULES);
 
$s = ob_get_contents();
 
ob_end_clean();
 
 
$s = strip_tags($s,'<h2><th><td>');
 
$s = preg_replace('/<th[^>]*>([^<]+)<\/th>/',"<info>\\1</info>",$s);
 
$s = preg_replace('/<td[^>]*>([^<]+)<\/td>/',"<info>\\1</info>",$s);
 
$vTmp = preg_split('/(<h2>[^<]+<\/h2>)/',$s,-1,PREG_SPLIT_DELIM_CAPTURE);
 
$vModules = array();
 for (
$i=1;$i<count($vTmp);$i++) {
  if (
preg_match('/<h2>([^<]+)<\/h2>/',$vTmp[$i],$vMat)) {
  
$vName = trim($vMat[1]);
  
$vTmp2 = explode("\n",$vTmp[$i+1]);
   foreach (
$vTmp2 AS $vOne) {
   
$vPat = '<info>([^<]+)<\/info>';
   
$vPat3 = "/$vPat\s*$vPat\s*$vPat/";
   
$vPat2 = "/$vPat\s*$vPat/";
    if (
preg_match($vPat3,$vOne,$vMat)) { // 3cols
    
$vModules[$vName][trim($vMat[1])] = array(trim($vMat[2]),trim($vMat[3]));
    } elseif (
preg_match($vPat2,$vOne,$vMat)) { // 2cols
    
$vModules[$vName][trim($vMat[1])] = trim($vMat[2]);
    }
   }
  }
 }
 return
$vModules;
}
?>

Sample Output:
[gd] => Array
(
  [GD Support] => enabled
  [GD Version] => bundled (2.0.28 compatible)
  [FreeType Support] => enabled
  [FreeType Linkage] => with freetype
  [FreeType Version] => 2.1.9
  [T1Lib Support] => enabled
  [GIF Read Support] => enabled
  [GIF Create Support] => enabled
  [JPG Support] => enabled
  [PNG Support] => enabled
  [WBMP Support] => enabled
  [XBM Support] => enabled
)

[date] => Array (
  [date/time support] => enabled
  [Timezone Database Version] => 2005.14
  [Timezone Database] => internal
  [Default timezone] => America/Los_Angeles
  [Directive] => Array (
     [0] => Local Value
     [1] => Master Value
  )
  [date.timezone] => Array (
     [0] => no value
     [1] => no value
  )
 )


<?php
/** get a module setting */
function getModuleSetting($pModuleName,$pSetting) {
 
$vModules = parsePHPModules();
 return
$vModules[$pModuleName][$pSetting];
}
?>

Example: getModuleSetting('gd','GD Version'); returns "bundled (2.0.28 compatible)"
Helpful Harry
06-Oct-2005 11:38
check out this cool and fantastic colourful phpinfo()!

<?php

ob_start
();
phpinfo();
$phpinfo = ob_get_contents();
ob_end_clean();

preg_match_all('/#[0-9a-fA-F]{6}/', $phpinfo, $rawmatches);
for (
$i = 0; $i < count($rawmatches[0]); $i++)
  
$matches[] = $rawmatches[0][$i];
$matches = array_unique($matches);

$hexvalue = '0123456789abcdef';

$j = 0;
foreach (
$matches as $match)
{

  
$r = '#';
  
$searches[$j] = $match;
   for (
$i = 0; $i < 6; $i++)
     
$r .= substr($hexvalue, mt_rand(0, 15), 1);
  
$replacements[$j++] = $r;
   unset(
$r);
}

for (
$i = 0; $i < count($searches); $i++)
  
$phpinfo = str_replace($searches, $replacements, $phpinfo);
echo
$phpinfo;
?>

phpversion> <phpcredits
Last updated: Sun, 25 Nov 2007
 
 
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