在循環中創建多維數組

Question

我試圖在循環中創建這樣的數組：

$dataPoints = array(
    array('x' => 4321, 'y' => 2364),
    array('x' => 3452, 'y' => 4566),
    array('x' => 1245, 'y' => 3452),
    array('x' => 700, 'y' => 900), 
    array('x' => 900, 'y' => 700));

用這個代碼

$dataPoints = array();    
$brands = array("COCACOLA","DellChannel","ebayfans","google",
    "microsoft","nikeplus","amazon"); 
foreach ($brands as $value) {
    $resp = GetTwitter($value);
    $dataPoints = array(
        "x"=>$resp['friends_count'],
        "y"=>$resp['statuses_count']);
}

但是當循環完成時，我的數組看起來像這樣：

Array ( [x] => 24 [y] => 819 ) 

Answer 1

這是因為您在每個循環$dataPoints重新分配為新數組。

將其更改為：

$dataPoints[] = array("x"=>$resp['friends_count'],"y"=>$resp ['statuses_count']);

這將在$dataPoints的末尾附加一個新數組

Answer 2

使用array_merge($array1,$array2)可以簡單地使用兩個數組一個用於迭代，另一個用於存儲最終結果。 結帳代碼。

$dataPoints = array();  
$dataPoint = array();  

$brands = array(
    "COCACOLA","DellChannel","ebayfans","google","microsoft","nikeplus","amazon"); 
foreach($brands as $value){
    $resp = GetTwitter($value);
    $dataPoint = array("x"=>$resp['friends_count'],"y"=>$resp ['statuses_count']);
    $dataPoints = array_merge($dataPoints,$dataPoint);
}

Answer 3

每次迭代都要覆蓋$ dataPoints變量，但是你應該向數組添加新元素......

$dataPoints[] = array("x"=>$resp['friends_count'],"y"=>$resp ['statuses_count']);