php显示html源代码函数

如果你想在后台更改页面底部代码，而其中有html代码，输入框显示不出源代码，pre标签又没有用，那么你不防试试下面的函数

    function UNHTML($content){
        $content=htmlspecialchars($content);
        $content=str_ireplace(chr(13),"<br>",$content);
        $content=str_ireplace(chr(32)," ",$content);
        $content=str_ireplace("[_[","<",$content);
        $content=str_ireplace(")_)",">",$content);
        $content=str_ireplace("|_|"," ",$content);
        return trim($content);
    }