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mysqli::close

PHP function Edit on GitHub ✎

(PHP 5, PHP 7, PHP 8)

Closes a previously opened database connection

Description

Oop

mysqli::close(): true

Procedural

mysqli_close(mysqli $mysql): true

Closes a previously opened database connection.

Open non-persistent MySQL connections and result sets are automatically closed when their objects are destroyed. Explicitly closing open connections and freeing result sets is optional. However, it's a good idea to close the connection as soon as the script finishes performing all of its database operations, if it still has a lot of processing to do after getting the results.

Parameters

Return Values

Always

Changelog

Version	Description
8.0.0	This function now always returns true. Previously it returned false on failure.

Examples

mysqli::close example

Oop

php

<?php

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

$result = $mysqli->query("SELECT Name, CountryCode FROM City ORDER BY ID LIMIT 3");

/* Close the connection as soon as it's no longer needed */
$mysqli->close();

foreach ($result as $row) {
    /* Processing of the data retrieved from the database */
}

Procedural

php

<?php

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = mysqli_connect("localhost", "my_user", "my_password", "world");

$result = mysqli_query($mysqli, "SELECT Name, CountryCode FROM City ORDER BY ID LIMIT 3");

/* Close the connection as soon as it's no longer needed */
mysqli_close($mysqli);

foreach ($result as $row) {
    /* Processing of the data retrieved from the database */
}

Notes

Note

mysqli_close() will not close persistent connections. For additional details, see the manual page on persistent connections.