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<html>
<head>
<meta charset="utf-8">
<title>PHP 简介 实例 - 自学教程(runoops.com)</title>
</head>
<body>
$x = array("a" => "red", "b" => "green");
$y = array("c" => "blue", "d" => "yellow");
$z = $x + $y; // $x 和 $y 数组合并
var_dump($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);
</body>
</html>