PHP 取消所有的HTML标签

<?php

function checkouthtml($string)
{
$string = stripslashes($string);
$string = preg_replace("/(\<[^\<]*\>|\r|\n|\s|\[.+?\])/is", '', $string);
$string = preg_replace("/(&nbsp;)/is", ' ', $string);
$string = preg_replace("/(&middot;)/is", '·', $string);
$string = preg_replace("/(&times;)/is", '*', $string);
$string = preg_replace("/(&quot;)/is", '"', $string);
$string = preg_replace("/(&ldquo;)/is", '“', $string);
$string = preg_replace("/(&rdquo;)/is", '”', $string);
$string = preg_replace("/(&gt;)/is", '>', $string);
$string = preg_replace("/(&deg;)/is", '°', $string);
$string = preg_replace("/(:)/is", '：', $string);
$string = preg_replace("/(,)/is", '，', $string);
return $string;
}

?>