Question

I’m trying to shorten my code using the ternary operator.

This is my original code:

if ($type = "recent") {
    $OrderType = "sid DESC";
} elseif ($type = "pop") {
    $OrderType = "counter DESC";
} else {
    $OrderType = "RAND()";
}

How can I use the ternary operator in my code instead of ifs/elses?

$OrderType = ($type = "recent") ? "sid DESC" : "counter DESC" ;

This is the code I tried, but have no idea how to add an “elseif part” to it.

Answer 1

This is called the ternary operator 😉

You could use two of those :

$OrderType = ($type == 'recent' ? 'sid DESC' : ($type == 'pop' ? 'counter DESC' : 'RAND()'))

This can be read as :

• if $type is 'recent'
• then use 'sid DESC'
• else
  • if $type is 'pop'
  • then use 'counter DESC'
  • else use 'RAND()'

A couple of notes :

• You must use == or === ; and not =
  • The first two ones are comparison operators
  • The last one is the assignment operator
• It’s best to use (), to make things easier to read
  • And you shouldn’t use too many ternary operators like that : it makes code a bit hard to understand, i think

And, as a reference about the ternary operator, quoting the Operators section of the PHP manual :

The third group is the ternary
operator: ?:.
It should be used
to select between two expressions
depending on a third one, rather than
to select two sentences or paths of
execution.
Surrounding ternary
expressions with parentheses is a very
good idea.