Question

I would like to replace the following:

="Dark4Red"

with

=\"Dark4Red\"

The = sign and double quotations are fixed =”…”
I just need to add slashes before double quotations.

$content = preg_replace('/="[^a-zA-Z#0-9]"/', '=\"[^a-zA-Z#0-9]\"', $line);

The above solution didn’t work. Any idea?

Answer 1

How about addslashes?

That aside, you appear to have not read any of the examples on preg_replace‘s manual page – if you had, you’d have known that you capture a subpattern (in this case the contents of the quotes) with parentheses and use $1 to put them in the replacement string.