我需要使用mysql_close（连接）吗？

Question

I have the following code in db.php to connect to my DB.

<?php
$DB_HOST        = "localhost";
$DB_NAME        = "db";
$DB_USER        = "user";
$DB_PASSWORD        = "pass";

$con = mysql_connect($DB_HOST, $DB_USER, $DB_PASSWORD);

if (!$con)
{
  die('Could not connect: ' . mysql_error());
}

mysql_select_db($DB_NAME , $con);
?>

In my other script I include it using:

include("db.php");

In some cases I receive the ff error:

[10-Mar-2012 10:47:20] PHP Warning: mysql_connect() [function.mysql-connect]: User db_user already has more than 'max_user_connections' active connections in /home/user/public_html/sc/db.php on line 8

Now, I am wondering if I need to close the connection like:

<?php
include("db.php");

//other stuff here

mysql_close($con);
?>

BTW, I have a value of 100 max_connections in my MySQL config.

I also research about persistent connection and I believe my code above is not a persistent connection.

Answer 1

No, this won't help you if you close it at the end of the script. mysql_close() is just useful in case you want to free up resources before you end your script, because your connection is closed as soon as execution of the script ends