أسئلة بسيطة في الـ PHP أرجوا المساعدة في الإجابة عليها.

[wisammo]

????? ?? ??? PHP ????? ???????? ?? ??????? ?????.
1]. ??? ?????? ?????? ??? IP ????????.
2]. ??? ??? ??? ????? ??? ?? ????? ????, ??? ?????? ????? (?????) ??? ???? ?? ?????? ??? (255 ??? ????).
3]. ?? ???? ????? ?????? ????? ?????? ?? ????? ???????? Mysql ?? ??? ??????? ?????? ??? PHP ?? ?? ??????? ??? ????? ????????.

[Bruce]

???? 1.
$ip = $_SERVER['REMOTE_ADDR'];
echo"my IP is $ip ";
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????2.
?? ???? ?????? ????? ???????
???? ??? ??? ????? ??? longtext

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????3.
??? ?????

????
$username=$_POST['username'];
$password=$_POST['password'];
$md5pass=md5($password);
$email=$_POST['email'];

$sql="INSERT INTO $tbl_name(username, password, email)VALUES('$username', '$md5pass', '$email')";
$result=mysql_query($sql);

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?????? Bruce