How to accept programming code input to display goals?

Question

What is the safest way to accept user-entered program code in PHP, save it in a database and display it using the HTML pre-tag?

I am currently converting input to HTML objects, but for some reason I think it will not be so simple ...

Any suggestions?

Answer 1

Programming code is just text; if it is not executed, there can be no harm.

This means that you are concerned:

• SQL-. , (mysql_real_escape_string()) .

• XSS. html- (: htmlspecialchars()), ( : <script>) (: <script>).