将其从MySQL更改为MySQLi？ [关闭]

Question

I've decided to switch to MySQLi, because some people have told me it's more secure.. What I'm really confused about, is the new extensions. I tried just added 'i' after every mysql, but that gave me a crap load of errors. I looked up in the PHP manual why that was happening and there was a whole bunch of other functions.. I honestly can't figure out how to convert. Can you help me out?

include("dbinfo.php");
mysql_connect($c_host,$c_username,$c_password);
@mysql_select_db($c_database) or die(mysql_error());
$mycon = new mysqli($c_host, $c_username, $c_password, $c_database);
$query="SELECT * FROM users WHERE username='" .$_COOKIE['username']. "'";
$result=mysql_query($query) or die(mysql_error());
$num=mysql_numrows($result);
$username=mysql_result($result,$i,"username");

Answer 1

Here's what you need to do:

1. Read the overview so that have an understanding of the differences/advantages.

2. Consult the old -> new function summary on the PHP site and get your existing code up and running with the mysqli interface.

3. Take advantage of the improvements (such as using prepared statements) otherwise this is a futile exercise. (By default mysqli really isn't any more secure than mysql.)