This code is a conditional (ternary) operator that evaluates a...

This code is a conditional (ternary) operator that evaluates a condition and assigns a value to the variable $device based on that condition. Here's what it does:

1. It checks if the value of $_SESSION['audioout'] is equal to the string 'Local'.
2. If the condition is true (i.e., $_SESSION['audioout'] equals 'Local'), the value '_audioout' is assigned to the $device variable.
3. If the condition is false (i.e., $_SESSION['audioout'] does not equal 'Local'), the value 'btstream' is assigned to the $device variable.

In simpler terms:

• If the session variable $_SESSION['audioout'] is 'Local', $device becomes '_audioout'.
• Otherwise, $device becomes 'btstream'.