PHP mysql_close() Function
Definition and Usage
The mysql_close() function closes a non-persistent MySQL connection.
Syntax
mysql_close(link_identifier)
| Parameters | Description |
|---|---|
| link_identifier | Required. MySQL connection identifier. If not specified, the default is the last one that was mysql_connect() Open connection. If the connection is not found, the function will try to call mysql_connect() Establish a connection and use it. If an unexpected event occurs, no connection is found, or the connection cannot be established, the system will issue a warning message at the E_WARNING level. |
Description
This function closes the non-persistent connection associated with the specified connection identifier to the MySQL server. If not specified link_identifierthen close the previous opened connection.
Return Value
Returns true if successful, false otherwise.
Tips and Comments
Tip:mysql_close() is usually not necessary because non-persistent connections that have been opened will automatically close after the script execution is completed.
Note:mysql_close() will not close a persistent connection established by mysql_pconnect().
Example
<?php
$con = mysql_connect("localhost","mysql_user","mysql_pwd");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
// Some code...
mysql_close($con);
?>
