Question

I should extract multilingual content from a text structures in this way:

some text [it] italian text [/it] [en] english text [/en] bla bla bla

other text [it] other italian [/it] [en] other english text [/en] bla bla bla

I would extract all the text not enclose beetwen multilingual square brackets and the text enclosed beetwen current language square brackets.

For example if the current language is "en" I would extract the following text:

some text english text bla bla bla

other text other english text bla bla bla

How could I use regular expressions to correctly extract the text?

Answer 1

like

 $result = preg_replace_callback("~\[ (\w+) \] (.*?) \[ /\\1 \]~sx", 
       function($m) { return $m[1] == "en" ? $m[2] : ""; },
       $text);