Sharing specific usage skills of PHP dialogue_PHP tutorial

For http:///www.yourdomain.com/yourscript.php?count=56 assign a new value to the registered variable $count. This is important for security: it can only be deleted in server-side scripts. An unregistered dialog variable.

If you want to completely delete a conversation variable, you first need to unregister it from the system:

session_unregister('count');

The script to completely delete a conversation variable is Very simple, as shown below:

session_destroy();

Using PHP session variables can reduce the frequency of database access, make the code clearer, and reduce the number of cookies sent to the user. It's the simplest way.

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in a server-side script