[SOLVED] Combining year, month, and day

[sanderphp]

I am trying to learn how to combine the year, month, and day that I getting from 3 different fields so I can use that date in my db. 

 

Would I combine them before writing them like

 

$date = array($dateyear,$datemonth,$dateday);

 

or

 

$datemonth = $_POST['datemonth'];
$dateyear = $_POST['dateyear'];
$dateday = $_POST['dateday'];

$date = $dateyear.$datemonth.$dateday;

 

I'm sure that concatenation method isn't correct, but I haven't done this before.

 

Or would I better off with something like this?

 

$query = "INSERT INTO info (date)
VALUES ('$dateyear $datemonth $dateday')";

[p2grace]

What's the field type in the database?  Is it date or timestamp?

 

<?php
// if date
$date = "$dateyear-$datemonth-$dateday";
// if timestamp
$date = "$dateyear-$datemonth-$dateday ".date("H:m:s");
?>

[sanderphp]

just the date.  Thanks!