PHP中的多維數組與鍵

Question

我製作一個腳本來監視來自某些VPS的數據，這些數據存儲在MySQL數據庫中。

$result = mysql_query("SELECT * FROM data"); 
$data = array(); 
while ($row = mysql_fetch_array($result)) { 
    $data[] = array(
      'id' => $row['id'], 
      'hostname' => $row['hostname'], 
      'loadavrg' => $row['load average'] 
    ); 
} 

我想separase由主機名的數據，所以我可以像下面的示例閱讀：

foreach($data['sitename.com'] as $d) 
    echo $d['loadavrg']; 

我已經嘗試用下面的代碼（只是用於測試），但沒有奏效：

$result = mysql_query("SELECT * FROM data WHERE hostname='sitename.com'"); 
$data = array(); 
while ($row = mysql_fetch_array($result)) { 
    $data[] = array(
     'sitename.com' => array(
      'id' => $row['id'], 
      'loadavrg' => $row['load average'] 
     ) 
    ); 
} 

我只是缺少正確的方式和語法來實現它：X

Answer 1

每埃爾EMENT應該作爲子陣的'sitename.com'：

while ($row = mysql_fetch_array($result)) { 
    $data['sitename.com'][] = array(
     'id' => $row['id'], 
     'loadavrg' => $row['load average'] 
    ); 
} 

Answer 2

試試這個，

while ($row = mysql_fetch_array($result)) { 
    $hostname = $row['hostname']; 
    $data[$hostname][] = array(
     'id' => $row['id'], 
     'loadavrg' => $row['load average'] 
    ); 
}