一个用PHP实现的UBB类

se;
else{
$ret .= ''<br>'';
$nl = true;
}
break;
default:
$ret .= $chr;
$nl = false;
break;
}
}

return $ret;
}


function htmlencode4textarea($str){
$str = (string)$str;

$ret = '''';
$len = strlen($str);
for($i=0;$i<$len;$i++){
$chr = $str[$i];
switch($chr){
case ''<'':
$ret .= ''<'';
break;
case ''>'':
$ret .= ''>'';
break;
case ''"'':
$ret .= ''"'';
break;
case ''&'':
$ret .= ''&'';
break;
case '' '':
$ret .= '' '';
break;
case chr(9):
$ret .= '' '';
break;
default:
$ret .= $chr;
break;
}
}

return $ret;
}

function emailcheck($email){
$ret=false;
if(strstr($email, ''@'') && strstr($email, ''.'')){
if(eregi("^([_a-z0-9]+([\\._a-z0-9-]+)*)@([a-z0-9]{2,}(\\.[a-z0-9-]{2,})*\\.[a-z]{2,3})contentquot;, $email)){
$ret=true;
}
}
return $ret;
}

function str2url($path){
return eregi_replace("%2f","/",urlencode($path));
}
?>