php ternary operator double question mark code example

Example 1: ternary operator for three conditions in php

$foo = your_value;
$bar = ($foo == 1) ? "1" : (($foo == 2)  ? "2" : "other");
echo $bar;

Example 2: php double question mark

$foo = $bar ?? 'something';
$foo = isset($bar) ? $bar : 'something';