You can use PHP's filter functions to filter/validate the form input. Here is a good tutorial to get you started. The email and URL filters aren't great (there was a recent discussion here on that ...

Be sure to run the test to see the valid and rejected e-mail addresses, the double-escaping (\\) inside the PHP strings tends to obfuscate the addresses. You're challenged to subject your favorite ...

PHP HTML file upload tutorial Don’t fret if you’re a developer with an Apache web server and the goal is to code an HTML5 and PHP file upload component. Modern browsers, along with simplified ...