Question

I want to know how I can identify a specific term or word in a input on php. Like if they write <script>, it will not be allowed to submitted. So that people don’t hack my website.

So I need I code to see if that term or word it was written in the input. I mean, if the input was jkgdknf <script> iofosef I will like the program to not allow the guy to submit that input.

Thanks !

Answer 1

The easiest thing for that is strip_tags():

$string = strip_tags($_POST['input']);

This function tries to return a string with all NUL bytes, HTML and PHP tags stripped from a given str.