If you are using setcookie in PHP's CookieManager and it's not working on Android devices, there are a few potential reasons and solutions to consider:

  1. Cookie Path and Domain: When setting cookies, ensure that you have set the correct path and domain parameters. The path parameter defines the path on the server for which the cookie is valid, and the domain parameter specifies the domain for which the cookie is valid. If these parameters are not set correctly, the cookie may not be accessible on certain devices.

    Make sure you set the path parameter to the appropriate value based on your application's URL structure. For example, if your application is located at the root of the domain, set the path to '/'. If it's located in a subdirectory, adjust the path accordingly.

    Additionally, ensure that the domain parameter is set to the correct domain for which the cookie should be valid. If the cookie needs to be accessible across subdomains, consider setting the domain to the root domain (e.g., .example.com).

  2. Secure and HttpOnly Flags: If you are setting cookies over HTTPS, consider adding the secure flag to ensure that the cookie is only sent over secure HTTPS connections. Additionally, consider setting the HttpOnly flag to prevent client-side scripts from accessing the cookie. These flags are important for security reasons, but they may have an impact on cookie accessibility on certain devices.


    setcookie('myCookie', 'value', time() + 3600, '/', '.example.com', true, true);
  3. Cookie Size Limitations: Some Android devices may have limitations on the maximum size of cookies they can handle. Ensure that the cookie size does not exceed the maximum allowed size on the devices you are testing.

  4. Cookie Expiry Time: Check the expiry time you are setting for the cookie. If the cookie expires too quickly, it may seem like it's not being set. Ensure that the expiry time is set to a reasonable value (e.g., a few hours or days) to test its behavior.

  5. Client-Side Code: Ensure that there are no JavaScript or client-side code that may be interfering with the cookie behavior on Android devices. Some client-side scripts or libraries may inadvertently overwrite or delete cookies.

  6. Verify in Different Browsers: Test the cookie behavior on different browsers and Android devices to check if the issue is specific to a particular browser or device.

If you have checked the above aspects and the issue persists, consider sharing more specific details about your code, cookie settings, and any error messages you may be encountering. This will help in providing more targeted solutions to the problem.

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