How to check whether Suhosin is installed?

I'm not familiar with Suhosin (never used it) but if possible I need to check开发者_高级运维 using PHP whether it is installed. This is for part of an installer that I'm writing. Thanks.

To detect the Suhosin Extension use extension_loaded() no matter if it is dynamically loaded or statically compiled:

extension_loaded('suhosin');

To detect the Suhosin-Patch, check for the constant presence:

constant("SUHOSIN_PATCH");

simply write a php file in your document root like <?php phpinfo(); ?> it will print all the information related to php installation just find for the "suhosin" block in it is installed on your server you can find the block with all the values set for it.

extension_loaded('suhosin');

PHP docs for extension_loaded.

If the extension doesn't load, it may still be available through dl:

if (!extension_loaded('suhosin')) {
    if (!dl('suhosin.so')) {
        // Extension not loaded.
        return false;
    }
}

// Extension loaded.
return true;

You can test if a configuration open is set for Suhosin:

$isSuhosinInstalled = ini_get('suhosin.session.max_id_length') !== '';