if ($data[$i][’nickname’])
{
$nickname = $data[$i][’nickname’];
}
else
{
$nickname = $data[$i][’ip’];
}

$nickname = $data[$i][’nickname’] ? $data[$i][’nickname’] : $data[$i][’ip’];

$ext_name = strtolower(str_replace(".", "", strrchr($upfilename, ".")));
if (!empty($type))
{
if (!strpos($type, $ext_name))
{
echo "Please upload the file of $type form.";
exit();
}
}

$ext_name = strtolower(str_replace(".", "", strrchr($upfilename, ".")));
if (!($type===’’) && strpos($type, $ext_name)===false)
{
echo "Please upload the file of $type form.";
exit();
}

4.盡量讓你的代碼清淅些

如果寫(xiě)成這樣，是比較讓人頭痛的:

$foo=$_post["foo"];
$username=$_post["user"];
$group=$_POST["group"];
if ($group=="wheel"){
$username=$username."wheel";
}

$foo = $_post["foo"];
$username = $_post["username"];
$group = $_POST["group"];
if ($group=="wheel")
{
$username = $username."wheel";
}

$foo = &$_POST[’foo’];
$username = $_POST["group"]!=’wheel’ ? $_POST["username"] : $_POST["username"].’wheel’;

$query="select `flash_comment`.`content` , `flash_comment`.`nickname` , `flash_comment`.`date` , `flash_comment`.`ip` , `product`.`p_name` , `sgflash`.`fid` from `flash_comment` left join `product` on ( `flash_comment`.`p_no` = `product`.`p_no` ) left join `sgflash` on ( `product`.`p_name` = `sgflash`.`f_name` ) where `flash_comment`.`p_no` != ’’ order by `flash_comment`.`date`";

$query = "SELECT `flash_comment`.`content` , `flash_comment`.`nickname` , `flash_comment`.`date` , `flash_comment`.`ip` , `product`.`p_name` , `sgflash`.`fid`
FROM `flash_comment`
LEFT JOIN `product` ON ( `flash_comment`.`p_no` = `product`.`p_no` )
LEFT JOIN `sgflash` ON ( `product`.`p_name` = `sgflash`.`f_name` )
WHERE `flash_comment`.`p_no` != ’’
ORDER BY `flash_comment`.`date`";