文本转HTML的php代码

<php
//文本转HTML
function Text2Html($txt)
{
$txt = str_replace(”  ”,”　”,$txt);
$txt = str_replace(“<”,”&lt;”,$txt);
$txt = str_replace(“>”,”&gt;”,$txt);
$txt = preg_replace(“/[rn]{1,}/isU”,”<br/>rn”,$txt);
return $txt;
}
?>