$servername = "localhost";
$username = "root";
$password = "mysql";
$dbname = "comptabilisation";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
function like($like){
    $nbLike = 0;
    if( $like = "like" ){
        nbLike +1;
    }
}