PHP - compact

第一种情况：compact里没有数组

<?php
$firstname = "Bill";
$lastname = "Gates";
$age = "60";

$result = compact("firstname", "lastname", "age");

print_r($result);
?>

Array ( [firstname] => Bill [lastname] => Gates [age] => 60 )

第二种情况

<?php
$firstname = "Bill";
$lastname = "Gates";
$age = "60";

$name = array("firstname", "lastname");
$result = compact($name, "location", "age");

print_r($result);
?>

Array ( [firstname] => Bill [lastname] => Gates [age] => 60 )