what is session and cookies in php - Wikitechy https://www.wikitechy.com/interview-questions/tag/what-is-session-and-cookies-in-php/ Interview Questions Wed, 03 Aug 2022 12:37:58 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png what is session and cookies in php - Wikitechy https://www.wikitechy.com/interview-questions/tag/what-is-session-and-cookies-in-php/ 32 32 What is session in PHP ? https://www.wikitechy.com/interview-questions/php/what-is-session-in-php/ https://www.wikitechy.com/interview-questions/php/what-is-session-in-php/#respond Wed, 03 Aug 2022 12:37:58 +0000 https://www.wikitechy.com/interview-questions/?p=4568
  • PHP session is used to store and pass information from one page to another page temporarily until the user closes website.
  • In shopping website PHP website is widely used where we need to store and pass cart information from one page to another.
  • For example. username, product code, product name, product price etc.
  • The session creates unique user id for each browser to recognize the user and avoid conflict between multiple browsers.
  • PHP session_start () function is used to start the session and starts new and resume existing session.
  • If session is created already then it returns existing session and if session is not available, it returns and creates new session.
  • It is an associative array that contains all session variables and it is used to get and set session variables.

    • Syntax

    <?php
      
               session_start();
      
                ?>

    Sample Code

    <?php
                     session_start();
                    ?>
                  <!DOCTYPE html>
                  <html>
                  <body>

                  <?php
                   // Echo session variables that were set on previous page
                     echo "Favorite color is " . $_SESSION["favcolor"] . ".<br>";
                     echo "Favorite animal is " . $_SESSION["favanimal"] . ".";
                  ?>

                </body>
                </html>

    Output

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