PHP + mysql query

PHP + mysql query

$link = mysql_connect(ipAddress, userName, password);
mysql_select_db(DBName, $link); ========>第一步和第二部等于 mysql_connect(ipAddr, userName, password, DBName);

$result = mysql_query(SQL, $link);
while($row=mysql_fetch_row($result)) $row[0];
mysql_free_result($result);

method 2::

$db = new mysqli(addr, username, password, <dbname>); =====> $db->select_db(dbname);

$result = $db->query(sql);
$result->num_rows; ====> mysqli_num_rows($result);
$row = $result->fetch_assoc(); =======> mysqli_fetch_assoc(); =====> mysql_fetch_row($result)===> $result->fetch_object()==> mysqli_fetch_object($result);

$result->free()
$db->close(); mysqli_close($db);

Web中需要处理的字符常用的函数： get_magic_quotes_gpc() addslashes() tripslashes()