I was wondering if it is possible to check if mod_rewrite is enabled on Apache AND IIS in PHP.
ModRewrite for IIS exists. Check it here.
So, I'm looking for a PHP script that checks for mod_rewrite on Apache and IIS.
Does anyone know such script or can write one?
Especially for Microsoft IIS.
Thanks!
If you're using mod_php, you can use apache_get_modules(). This will return an array of all enabled modules, so to check if mod_rewrite is enabled, you could simply do
in_array('mod_rewrite', apache_get_modules()); Unfortunately, you're most likely trying to do this with CGI, which makes it a little bit more difficult.
You can test it using the following, though
strpos(shell_exec('/usr/local/apache/bin/apachectl -l'), 'mod_rewrite') !== false If the above condition evaluates to true, then mod_write is enabled.
mod_rewrite is installed. The IIS Mod-Rewrite module you're probably referring to is an entirely different and commercial product - it has no association with the Apache module, it's an entirely different question and I have no experience using it.
phpinfo() can be useful for many things, but if you want to write a system that uses mod_rewrite if it's enabled or otherwise fallbacks to some other behaviour, it be useful to detect it programmatically.<?php if(!function_exists('apache_get_modules') ){ phpinfo(); exit; } $res = 'Module Unavailable'; if(in_array('mod_rewrite',apache_get_modules())) $res = 'Module Available'; ?> <html> <head> <title>A mod_rewrite availability check !</title></head> <body> <p><?php echo apache_get_version(),"</p><p>mod_rewrite $res"; ?></p> </body> </html> 
I like Christian Roy's solution:
### .htaccess <IfModule mod_rewrite.c> # Tell PHP that the mod_rewrite module is ENABLED. SetEnv HTTP_MOD_REWRITE On RewriteEngine on RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d # The rest of your rewrite rules here </IfModule> Then, you can check in your PHP code for
array_key_exists('HTTP_MOD_REWRITE', $_SERVER); No idea if this works also with IIS (I have no way to check) but the odds are good.
<IfModule mod_env.c> it would be almost perfect. :)
Upload a file called info.php with this code and run it:
<?php phpinfo(); Search for mod_rewrite on the page, and see if you can find it under Loaded Modules.
don't make it so difficult you can simply find in phpinfo();
Hope helpful!
Thanks
via command line we in centOs we can do this
httpd -l 
<?php phpinfo(); ?> Look under Configuration in the apache2handler in the Loaded Modules row.
This is simple and works.
<?php foreach( apache_get_modules() as $module ) echo "$module<br />"; ?> This is my current method of checking if Mod_rewrite enabled for both Apache and IIS
/** * -------------------------------------------------------------- * MOD REWRITE CHECK * -------------------------------------------------------------- * - By A H Abid * Define Constant for MOD REWRITE * * Check if server allows MOD REWRITE. Checks for both * Apache and IIS. * */ if( function_exists('apache_get_modules') && in_array('mod_rewrite',apache_get_modules()) ) $mod_rewrite = TRUE; elseif( isset($_SERVER['IIS_UrlRewriteModule']) ) $mod_rewrite = TRUE; else $mod_rewrite = FALSE; define('MOD_REWRITE', $mod_rewrite); It works in my local machine and also worked in my IIS based webhost. However, on a particular apache server, it didn't worked for Apache as the apache_get_modules() was disabled but the mod_rewrite was enable in that server.
You can get a list of installed apache modules, and check against that. Perhaps you can check if its installed by searching for its .dll (or linux equivalent) file.
Two lines of code:
$isEnabled = in_array('mod_rewrite', apache_get_modules()); echo ($isEnabled) ? 'Enabled' : 'Not enabled'; Another idea, indeed more a dirty hack, regarding mod rewrite is server dependend an not necessary a php issue: Why not, if you have the possibillity, create a test directory put a .htaccess in it rewriting to test.php, call the directory via http and check if you get the expected result you put in test.php.
Indeed, dirty.
One more method through exec().
exec('/usr/bin/httpd -M | find "rewrite_module"',$output); If mod_rewrite is loaded it will return "rewrite_module" in output.
Use this function:
function apache_module_exists($module) { return in_array($module, apache_get_modules()); } For IIS heros and heroins:
No need to look for mod_rewrite. Just install Rewrite 2 module and then import .htaccess files.
Actually, just because a module is loaded, it does not necessarily mean that the directives has been enabled in the directory you are placing the .htaccess. What you probably need is to know: Does rewriting work? The only way to find out for sure is to do an actual test: Put some test files on the server and request it with HTTP.
Good news: I created a library for doing exactly this (detecting various .htaccess capabilities). With this library, all you need to do is this:
require 'vendor/autoload.php'; use HtaccessCapabilityTester\HtaccessCapabilityTester; $hct = new HtaccessCapabilityTester($baseDir, $baseUrl); if ($hct->rewriteWorks()) { // rewriting works } (instead of $baseDir and $baseUrl, you must provide the path to where the test files are going to be put and a corresponding URL to where they can be reached)
If you just want to know if the module is loaded, you can do the following:
if ($hct->moduleLoaded('rewrite')) { // mod_rewrite is loaded (tested in a real .htaccess by using the "IfModule" directive) } The library is available here: https://github.com/rosell-dk/htaccess-capability-tester