how to use cookies in php - Wikitechy https://www.wikitechy.com/interview-questions/tag/how-to-use-cookies-in-php/ Interview Questions Mon, 01 Aug 2022 06:11:36 +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 how to use cookies in php - Wikitechy https://www.wikitechy.com/interview-questions/tag/how-to-use-cookies-in-php/ 32 32 What are cookies ? How to create cookies in PHP ? https://www.wikitechy.com/interview-questions/php/what-are-cookies-how-to-create-cookies-in-php/ https://www.wikitechy.com/interview-questions/php/what-are-cookies-how-to-create-cookies-in-php/#respond Mon, 01 Aug 2022 06:11:36 +0000 https://www.wikitechy.com/interview-questions/?p=4523
  • In PHP cookie is a small file with a maximum size of 4KB that the web server stores on the client computer.
  • Cookies are typically used to keep track of information such as a username that the site can retrieve to personalize the page when the user visits the website next time.
  • They can only be read from the domain that it has been issued from.
  • In browser cookies are usually set in an HTTP header but JavaScript can also set a cookie directly.
  • In PHP setcookie () function is used to set a cookie.
  • This function needs to be called prior to any output generated by the script otherwise the cookie will not be set.
  • In setcookie () function name parameter is used to set the name of the cookie and value parameter is used to set the value of the cookie.
  • In setcookie () function expire parameter is used to set the expiry timestamp of the cookie after which the cookie can’t be accessed.
  • In setcookie () function path parameter is used to specify the path on the server for which the cookie will be available.
  • In setcookie () function domain parameter is used to specify the domain for which the cookie is available.
  • In setcookie () function security parameter is used to indicate that the cookie should be sent only if a secure HTTPS connection exists.

    • Syntax

    setcookie (name, value, expire, path, domain, security);

    Sample Code

    <!DOCTYPE html>
    <?php
    setcookie("test_cookie", "test", time() + 3600, '/');
    ?>
    <html>
    <body>

    <?php
    if(count($_COOKIE) > 0) {
        echo "Cookies are enabled.";
    } else {
        echo "Cookies are disabled.";
    }
    ?>

    </body>
    </html>

    Output

     

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