![]() ![]() The payload information, which in this case is the data array, should be the first parameter. To use the encode() function successfully, you must provide it with three parameters. The encode function creates JWT headers and signs the incoming payload with a cryptographic combination of all the information and the specified secret key after converting to a JSON object. This technique aids in the conversion of your data array to a JSON object. The encode() function from the PHP-JWT library will be used here. Now that you have all of the necessary information, you can easily build a JWT. Firebase PHP-JWT, a third-party library for working with JWTs and Apache, will be installed with Composer's help. Run composer from your project folder after you've installed it. If you haven't already done so, you may learn how to install composer on your computer here. ![]() You'll need PHP and composer installed on your PC to follow along. This guide will assist you in getting started with JWT and PHP. This post provides a basic login page and uses JWT to authenticate it. If you follow the code step by step, you'll end up with a tamper-proof PHP API. Now that you know everything there is to know about JWT, let's use it to protect your PHP API. To avoid this, all existing JWTs must be updated before they are rendered invalid. b) The attacker can access both the current and future sessions of JWTs if the private key is compromised.
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