php小试题

Submitted by admin on Wed, 11/02/2016 - 19:53
$a1 = array("a" => "JAVA", "b" => "ASP");
$a2 = array("c" => "C", "b" => "PHP");
print_r(array_merge($a1, $a2));
print_r(array_merge($a2, $a1));
print_r($a1 + $a2);
print_r($a2 + $a1);