php - Do not replace anything when inside a html tag. Preg Regex -

i have regular expression:

$buffer = preg_replace("/'([a-za-z0-9]+)'/iu",'$1',$buffer);

it removes single quotes when there's no whitespace between quotes. replaces inside html tag. don't want so.

here's example

<div id="foo"></div>

should be:

<div id=foo></div>

and

<script>foo='bar'</script>

should not change , therefore be:

<script>foo='bar'</script>

html unpredictable, , cannot accurately handled regular expressions. unless created html , can very, of exact format, use html parser. if can, html parser far easier use, anyway.

sorry :/

Barbera