UnhandledMatchError¶
An UnhandledMatchError error is thrown when the subject passed to a match expression is not handled by any case of the match expression. This means that all the cases have been exhausted, and then, the default case is missing.
Instead of finishing the match expression without any returned value, it throws an exception and stops the execution. This is a different behavior than switch, which will continue the processing, even if nothing was found, potentially leading to unexpected situations.
<?php
$b = match(3) {
1 => "A",
2 => "b";
};
?>