"red", "b" => "green");
$y = array("c" => "blue", "d" => "yellow");
$z = $x + $y; // $x 与 $y 的联合
var_dump($z);
echo "
";
var_dump($x == $y);
echo "
";
var_dump($x === $y);
echo "
";
var_dump($x != $y);
echo "
";
var_dump($x <> $y);
echo "
";
var_dump($x !== $y);
echo 'PHP 基础教程 - 简单教程(www.twle.cn)
';