PHP itself has been pretty secure for a while. If you&#x27;re concerned about security within your application, go with a framework that handles things like database access for you.<p>The biggest thing to watch out for is SQL injection. There&#x27;s so much old, viulnerable PHP code out there - and much of it in the examples people put out there for beginners!<p>OWASP has a PHP Security Cheat Sheet you might find helpful: <a href="https:&#x2F;&#x2F;www.owasp.org&#x2F;index.php&#x2F;PHP_Security_Cheat_Sheet" rel="nofollow">https:&#x2F;&#x2F;www.owasp.org&#x2F;index.php&#x2F;PHP_Security_Cheat_Sheet</a>