Question

I’m trying to parse a php code using some regex and I’m stuck at how to use preg_replace() to replace the last } with the string I want. Here’s a sample code:

$data = '<?php

 class Myclass {
      function index() {

      }
 } // <- I want to replace that curly brace

?>';

  $data = preg_replace('##is','// my new string here',$data);

Any idea how ?

Answer 1

Find last curly brace and replace all characters after it with a string

Using the search pattern: "(\})[^\}]*$" should do it:

$pattern = "(\})[^\}]*$";
preg_replace($pattern, $replaceWith, $subject);

Find last curly brace and replace only the brace itself with a string

Use a negative lookahead such as this: \}(?!.*\})

More info: http://frightanic.wordpress.com/2007/06/08/regex-match-last-occurrence/