在全局變量內部定義全局變量PHP

Question

我永遠在向上和向下移動我的代碼添加和刪除全局變量的函數。

是否有可能將全局變量內的全局變量傳遞給函數以保存每次函數中的定義？如果沒有，是否有更好的方法來做到這一點？

我的目標是在每個頁面的頂部有一個全局變量索引，而不必擔心必須在函數內定義它們。

global $site; 
$site = "global $link, $create, $populate, $delete, $withdraw"; 

$host = ""; 
$username = ""; 
$password = ""; 
$database = ""; 

$link = mysqli_connect("$host", "$username", "$password", "$database"); 

function display() { global $site; // code } 
function populate() { global $site; // code } 
function create() { global $site; // code } 
function withdraw() { global $site; // code } 

    //output 

Answer 1

林不知道我是否理解得很好。但是，你爲什麼不使$site和數組而不是一個字符串？

像這樣：

$host = ""; 
$username = ""; 
$password = ""; 
$database = ""; 

$link = mysqli_connect("$host", "$username", "$password", "$database"); 

$site = array(
    'link'  => $link, 
    'create' => $create, 
    'populate' => $populate, 
    'delete' => $delete, 
    'withdraw' => $withdraw, 
); 

function display() { 
    global $site; 
    // Here you can access & modify your $site array 
}