mysqli::close

mysqli_close

Closes a previously opened database connection

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public `true` `mysqli::close`

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`true` `mysqli_close` `mysqli` `mysql`

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.

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

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### `mysqli::close` example

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    <?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 */
    }

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    <?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 */
    }

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

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- `mysqli::__construct`
- `mysqli_init`
- `mysqli_real_connect`
- `mysqli_free_result`