Close MySQL connection

mysql_client_encoding
mysql_connect
MySQL Functions
PHP Manual

# mysql_close

(PHP 4, PHP 5)

mysql_close — Close MySQL connection

Warning

This extension is deprecated as of PHP 5.5.0, and will be removed in the future. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include:

- mysqli_close()
- PDO: Assign the value of `NULL` to the PDO object

### Description

bool mysql_close ([ resource `$link_identifier` = NULL ] )

mysql_close() closes the non-persistent connection to the MySQL server that's associated with the specified link identifier. If `link_identifier` isn't specified, the last opened link is used.

Using mysql_close() isn't usually necessary, as non-persistent open links are automatically closed at the end of the script's execution. See also freeing resources.

### Parameters

`link_identifier`

  The MySQL connection. If the link identifier is not specified, the last link opened by mysql_connect() is assumed. If no connection is found or established, an `E_WARNING` level error is generated.

### Return Values

Returns `TRUE` on success or `FALSE` on failure.

### Examples

Example #1 mysql_close() example

`<?php
$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
if (!$link) {
die('Could not connect: ' . mysql_error());
}
echo 'Connected successfully';
mysql_close($link);
?>`

The above example will output:

    Connected successfully

### Notes

> Note:

> mysql_close() will not close persistent links created by mysql_pconnect().

### See Also

- mysql_connect() - Open a connection to a MySQL Server
- mysql_free_result() - Free result memory

mysql_client_encoding
mysql_connect
MySQL Functions
PHP Manual