将多个变量合并为数组，并以变量名为键：compact（）

<?php
$name = "zhangsan";
$age = "30";
$email = "zhangsan@email.com";
$info = array("age", "email");
$zhangsan = compact("name", "height", $info);
print_r($zhangsan);
?>

输出：

Array
(
    [name] => zhangsan
    [age] => 30
    [email] => zhangsan@email.com
)