Ternary conditional operators are incredibly useful in PHP (and just about every other programming language) because they turn a multi-line IF statement into a single line! Case in point:

if($variable == "hello")
    {
    $response = true;
    }
else
    {
    $response = false;
    }

Becomes:

$variable == "hello" ? $response = true : $response = false;

And just like that, I've saved 7 lines of code! This is incredibly helpful when you need to check multiple variables and don't want to write up an entire if...else... statement to assign values to other variables.

And now that I've blogged about this structure, I won't have to look all over the internet when I need it but have forgotten what it's called.