string to \xHH in PHP

Question

I am curious is that any build in or easier way to encode string to \xHH format in PHP? I am trying to implement rule 3 and rule 4 from XSS OWASP Prevention with build in function or easier approach. but, I can't find any in the internet.

as far as I found, I need to make manual encoder/decoder for 'string to \xHH' format in PHP.

expected code in php

print(StringToXHH("foo"));
// output --> \x66\x6f\x6f

any idea?

You can encode JavaScript literals with `json_encode()` if that's what you mean. — Álvaro González, Dec 27 '20 at 13:22
Abra -> edited. Alvaro -> solved. thanks Eden -> read the question again. but thanks anyway — Isfa Hany, Jan 08 '21 at 22:31

score 1 · Accepted Answer · answered Dec 27 '20 at 15:42

Have a look at the answer in this SO question How do I pass variables and data from PHP to JavaScript?, specifically the section 3. Echo the data directly to JavaScript.

It isn't exactly the answer to your question, but addresses the overall issue.

tldr: use json_encode().

string to \xHH in PHP

1 Answers1