正则替换link标签有关问题

正则替换link标签问题
$segname=<link href="css/content.css" rel="stylesheet" type="text/css" />
preg_replace( '/<link(.*?)[^>]*>/i', '', $segname );
替换失败，正则该如何写

------解决方案--------------------

PHP code

$segname='aa<link href="css/content.css" rel="stylesheet" type="text/css" />bb';
echo preg_replace( '/<link(.*?)[^>]*>/i', '', $segname );