How to match string in single or double quoted using regex

Question

I\'m trying to write a regex that matches strings as the following:

translate(\"some text here\")

and

translate(\'some text here\'

Answer 1

@translate\(
([\'"])      # capture quote char
((?:
  (?!\1).    # not a quote
|            # or
  \\\1       # escaped one
)* # 
[^\\\\]?)\1    # match unescaped last quote char
\)@gx

Fiddle:

ok: translate("some text here")
ok: translate('some text here')
ok: translate('"some text here..."')
ok: translate("a\"b\"c\"d")
ok: translate("")
no: translate("a\"b"c\"d")