Ignore characters in preg_match_all output

Question

I have this regex:

preg_match_all('/{.*?}/', $html, $matches);

Returns all lines written inside curly braces. The $ matches variable also contains the characters {and}. How to remove them?

I do not want to do:

if ($matches[0] == "{variable}")

And I do not want to add (and) characters to the regular expression because I do not want to use:

preg_match_all('/{(.*?)}/', $html, $matches);
if ($matches[0][0] == "variable")

So, is there an easier way to remove curly braces from $ matches in a regular expression?

Answer 1

PCRE ( PHP ) lookarounds . Lookbehind, (?<=...), , . (?=...) , . : (?<!...) (?!...).

---

:

(?<={).*?(?=})

---

:

preg_match_all('/(?<={).*?(?=})/', $html, $matches);
// $matches[0] = 'variable';

---

@CasimirEtHippolyte . , - - . .*? [^}]*, 0+ }.

Answer 2

reset { , }. {} , }

{\K[^}]*

. regex101

Answer 3

(?<={).*?(?=})

Replace your regular expression with this. This will work.