源代码:
<?php $x = array("a" => "red", "b" => "green"); $y = array("c" => "blue", "d" => "yellow"); $z = $x + $y; // union of $x and $y var_dump($z); echo "<br />"; var_dump($x == $y); echo "<br />"; var_dump($x === $y); echo "<br />"; var_dump($x != $y); echo "<br />"; var_dump($x <> $y); echo "<br />"; var_dump($x !== $y); ?>
运行结果：
array(4) { ["a"]=> string(3) "red" ["b"]=> string(5) "green" ["c"]=> string(4) "blue" ["d"]=> string(6) "yellow" } <br />bool(false) <br />bool(false) <br />bool(true) <br />bool(true) <br />bool(true)