How to close database connection in php

How to close the database connection in php: You can use the mysqli_close() function to close the previously opened database connection. The specific usage method is: [mysqli_close($conn)], if successful, it returns TRUE, otherwise it returns FALSE.

The mysqli_close() function closes the previously opened database connection, returning TRUE if successful and FALSE if failed.

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Function syntax:

mysqli_close(connection);

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Code implementation:

<?php
$con=mysqli_connect("localhost","my_user","my_password","my_db");

// ....一些 PHP 代码...

mysqli_close($con);
?>

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