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

Use a regular expression:

if( preg_match( '!\(([^\)]+)\)!', $text, $match ) )
    $text = $match[1];