Which PHP function is used to establish a database connection?*connect_db()db_connect()pdo_connect()mysqli_connect()

Which MySQL function is used to establish a connection to the database in PHP?     Select one:a. mysql_db_connect()b.mysqli_connect()              c. mysql_connect()             d.connect_mysql()

PHP syntax to establish database connection

Assume the connection to database is saved in connection.php file. The php syntax to connect to the database.

Understand how to interact with databases using PHP (e.g., MySQL, PostgreSQL) through MySQLi or PDO.

Which function in PHP can be utilised to query an MySQL database with an SQL statement?a. sql()b. mysql()c. query()d. mysqli_query()e. None of the above.