The ternary operator is not a shorthand way of writing an if block. It's a shorthand way of writing an if block that returns a value.
if ($expression) {
$var = "foo";
} else {
$var = "bar";
}
# WRONG
$expression ? $var = "foo" : $var = "bar";
# correct
$var = $expression ? "foo" : "bar";
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