php syntax if / elseif / else but for 4 conditions

I need to implement 3 'if conditions' in my script, i've looked it up online but I can only find solutions up to 2 if's like below

<?
if (condition 1){
    do something;
}
elseif (condition 2){
    do something else;
}
else {
    do this last;
}
?>

but I would need something like this:

if (condition 1) { do this };
else if (condition 2) {do that}; 
or else if (condition 3) {do that};
else (do this)

How do I go about this?