--TEST--
subtracting arrays
--FILE--
<?php

$a = array(1,2,3);
$b = array(1);

try {
    var_dump($a - $b);
} catch (Error $e) {
    echo "\nException: " . $e->getMessage() . "\n";
}

$c = $a - $b;
var_dump($c);

echo "Done\n";
?>
--EXPECTF--
Exception: Unsupported operand types: array - array

Fatal error: Uncaught TypeError: Unsupported operand types: array - array in %s:%d
Stack trace:
#0 {main}
  thrown in %s on line %d