JWT in PHP

When to use

• The user reviews or fixes JWT code for vulnerabilities such as alg=none acceptance, weak HMAC secrets, missing expiry, or unverified signatures.
• The user must choose a JWT signing algorithm — HS256 (shared secret) versus RS256 (public/private key) — or configure signing keys for a PHP token.
• The user signs, issues, decodes, or verifies a JWT (JSON Web Token) in PHP for stateless authentication or API access.

When NOT to use