PHP Manual
mysqli
Closes a previously opened database connection

mysqli::close

mysqli_close

(PHP 5, PHP 7, PHP 8)

mysqli::close -- mysqli_close — Closes a previously opened database connection

Description

Object-oriented style

public mysqli::close(): bool

Procedural style

mysqli_close(mysqli $mysql): bool

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

mysql: Procedural style only: A mysqli object returned by mysqli_connect() or mysqli_init()

Return Values

Returns true on success or false on failure.

Examples

Example #1 mysqli::close() example

Object-oriented style


<?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 style


<?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 */
}