在foreach循環中使用別名分配一個全局變量（php）

Question

我想通過在第8行上執行（$ checkbox = $ data;）來重新分配一個全局變量（本例中爲'$ aDoor'）。不知道如何解決這個問題，並會喜歡一些幫助！

$checkboxes = array($aDoor,$bro); 

foreach ($checkboxes as $checkbox => $checkdata) { 
    $data = ''; 
    foreach ($checkdata as $check) { 
     $data .= $check . ", "; 
    } 
    $checkbox = $data; 
    echo $data; 
} 
echo $aDoor; 

Answer 1

您需要參考。拋出一些＆符號：

$aDoor = array("hi", "hi2"); 
$bro = array("bye", "bye2"); 
$checkboxes = array(&$aDoor, &$bro); 
//& means modifications to $checkbox[0] will also change $aDoor 
//vs. just making a copy of $aDoor 

foreach ($checkboxes as &$checkbox) { //same here 
    $checkbox = implode(",", $checkbox); 
} 
print($aDoor); 

此外，implode是一種將數組連接在一起的更簡單的方法。