Description:
------------
problem with preg_match, dont match right if string contain something eg. \x1d<DIR>s\x1f\x1f\x1f\x1f\x1f\x1faa .

Reproduce code:
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<?
  $cn1 = "{__directr[15]} <DIR> aa"; // ok
  $cn2 = "{__directr[15]}\x1d&lt;DIR&gt;s\x1f\x1f\x1f\x1f\x1f\x1faa";  // not ok

  if(preg_match("/^(\{\_\_+[a-z]+\[+(.*)+\]\})/i", $cn1))
     print("ok<br/>");
  else
     print("not ok<br/>");

  if(preg_match("/^(\{\_\_+[a-z]+\[+(.*)+\]\})/i", $cn2))
     print("ok<br/>");
  else
     print("not ok<br/>");

?>

Expected result:
----------------
ok
ok

Actual result:
--------------
ok
not ok