Apache Friends Support Forum

I want to automatically detect the current environment for my scripts -- whether local or remote server. I currently use the code below and would appreciate comments on whether there is a better way or if I'm missing something.

Code: Select all

<?php
// determine if running on local or remote (weblive)
//
// XP --> 'Documents and Settings
// Vista, Win7, Win8 --> C:/Users _OR_ C:\Users';
// IIS --> inetpub
// detect MAMP, WAMP or XAMPP installs
// Apple OS X --> /Library/WebServer
//
$local_keys = array(
   'Documents and Settings',
   ':\Users\\',
   ':/Users/',
   ':\Windows',
   ':/Windows/',
   ':\xampp\\',
   ':/xampp/',
   ':\wamp\\',
   ':/wamp/',
   ':\mamp\\',
   ':/mamp/',
   ':\inetpub\\',
   ':/inetpub/',
   '/Library/WebServer/'
);
//
$weblive = true;
$hoststr = $_SERVER['SCRIPT_FILENAME'];
foreach($local_keys as $key) if(stristr($hoststr, $key)) $weblive = false;
//
if ($_SERVER['HTTP_HOST'] == 'localhost' && !$weblive) $hostname = '127.0.0.1';
else $hostname = $_SERVER['HTTP_HOST'];
?>

That depends how your own behavior with development / test environments is.
Often something like this is enough:

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if('127.0.0.1' == $_SERVER["REMOTE_ADDR"])
{
    // set local config parameters
}

You can add local addresses too or build an array of addresses and check with in_array()

Another common possibility would be to set an Apache environment variable (SetEnv) for example in an .htaccess file and read this out with php (getenv())

That wouldn't work for my setup? -- see below:

[SERVER_SOFTWARE] => Apache/2.4.3 (Win32) OpenSSL/1.0.1c PHP/5.4.7
[SERVER_NAME] => localhost
[SERVER_ADDR] => ::1
[SERVER_PORT] => 80
[REMOTE_ADDR] => ::1
[DOCUMENT_ROOT] => C:/xampp/htdocs

Okay, so you are using IPv6 too.

How about that:

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if(in_array($_SERVER["REMOTE_ADDR"], array('127.0.0.1', '::1')))
{
    // set local config parameters
}

thanks ... now I'll have learn what that means

Thats not that difficult.
You know all the constructs already maybe except the php function in_array().
in_array simply checks if a value ($_SERVER['REMOTE_ADDR']) is part of an array (127.0.0.1 and ::1 are building this array).
And ::1 is simply the same as 127.0.0.1 just for IPv6.

You can use something like this too if you feel more comfortible with:

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if($_SERVER['REMOTE_ADDR'] == '127.0.0.1' or $_SERVER['REMOTE_ADDR'] == '::1') {
    // set local configuration parameters
}

thank you for taking the time to respond. I don't have a problem with the PHP, it's the "::1" that I wasn't familiar with. I looked it up and found that it is IPv6 loopback address and is equivalent to 0:0:0:0:0:0:0:1 (which is what you wrote, but I didn't understand it).