(PHP 5, PHP 7, PHP 8)
mysqli::close -- mysqli_close — Closes a previously opened database connection
Object-oriented style
Procedural style
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.
mysql
Procedural style only: A mysqli object returned by mysqli_connect() or mysqli_init()
Always returns true
.
Version | Description |
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8.0.0 |
This function now always returns true . Previously it returned false on failure.
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Example #1 mysqli::close() example
Object-oriented style
<?phpmysqli_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 $row) { /* Processing of the data retrieved from the database */}
Procedural style
<?phpmysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);$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 */}
Note:
mysqli_close() will not close persistent connections. For additional details, see the manual page on persistent connections.