Question

Which would be more optimal of the two? I can't test it on my computer, I can't rely on it.

foreach($links as $link){
    if($a){
        //do something
    }
    if($b){
        //do something
    }
    if($c){
        //do something
    }
    if($d){
        //do something
    }
}

OR:

if($a){
    foreach($links as $link){
        //do something
    }
}
if($b){
    foreach($links as $link){
        //do something
    }
}
if($c){
    foreach($links as $link){
        //do something
    }
}
if($d){
    foreach($links as $link){
        //do something
    }
}

Answer 1

I think The first one is better. Let’s say $a === true and $b === true. In the first example only one loop will be executed, but on the second example the same loop will be executed twice.