debian - "Call to undefined function mysql_connect()" after upgrade to php-7

Question

(This question already has answers here): question from:https://stackoverflow.com/questions/66052398/what-does-this-mysql-database-error-mean-and-how-do-i-fix-it

Answer 1

From the PHP Manual:

Warning This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide. Alternatives to this function include:

mysqli_connect()

PDO::__construct()

use MySQLi or PDO

<?php
$con = mysqli_connect('localhost', 'username', 'password', 'database');