PHP: Best way to extract text within parenthesis?

Question

What\'s the best/most efficient way to extract text set between parenthesis? Say I wanted to get the string \"text\" from the string \"ignore everything except this (text)\"

Answer 1

This is a sample code to extract all the text between '[' and ']' and store it 2 separate arrays(ie text inside parentheses in one array and text outside parentheses in another array)

   function extract_text($string)
   {
    $text_outside=array();
    $text_inside=array();
    $t="";
    for($i=0;$i

Output: extract_text("hello how are you?"); will produce:

array(1) {
  [0]=>
  string(18) "hello how are you?"
}

array(0) {
}

extract_text("hello [http://www.google.com/test.mp3] how are you?"); will produce

array(2) {
  [0]=>
  string(6) "hello "
  [1]=>
  string(13) " how are you?"
}


array(1) {
  [0]=>
  string(30) "http://www.google.com/test.mp3"
}