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# mysql_close

(PHP 3, PHP 4 , PHP 5)

mysql_close -- Close MySQL connection

## Description

bool mysql_close ( [resource link_identifier])

成功回傳`TRUE`失敗回傳`FALSE`。

mysql_close() closes the 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.

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

示範 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); ?>`

See also mysql_connect() and mysql_pconnect().

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