$conn = mysqli_connect("localhost", "username", "password", "database"); $result = mysqli_query($conn, "SELECT * FROM users"); $num_rows = mysqli_num_rows($result); echo "There are " . $num_rows . " rows in the users table.";
$conn = mysqli_connect("localhost", "username", "password", "database"); $result = mysqli_query($conn, "SELECT * FROM users WHERE age > 18"); $num_results = mysqli_num_rows($result); echo "There are " . $num_results . " users over 18 years old.";Package/Library: The db_Count() function is not a built-in PHP function but it can be found in several packages/libraries such as MySQLi and PDO. In the examples above, we used MySQLi to connect to the MySQL database and execute SQL queries.