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  • How to check if user's session is already started in PHP

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    If you want to know weather the session is already begin or not in PHP then, you can use of the syntax from PHP manual

    see the example below

    1. if (!isset($_SESSION)) session_start();

    2. And in case you are using PHP < 5.4 you have to the code below:

    if (version&_compare(phpversion(), '5.4.0', '<')) {
         if(session&_id() == '') {
            session&_start();
         }
     }
     else
     {
        if (session&_status() == PHP&_SESSION&_NONE) {
            session&_start();
        }
     }
    

    In the code above the benefit is your code will works fine whatever is you php version

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