PHP Arrays
What will be the output of the following PHP code? $a1 = array("red", "green"); $a2 = array("blue", "yellow"); print_r(array_merge($a1, $a2));
Array ( [0] => blue [1] => yellow [2] => red [3] => green )
Array ( [0] => red [1] => green [2] => blue [3] => yellow )