将数组格式化为JSON以便输入到Google Charts API中？

Question

注意到整数值需要是json中的整数，但是我正在使用字符串。

原始阵列是：

'[{"sctr":"Asset Managers","amount":"1586500"},{"sctr":"Auto 
    Parts","amount":"1618000"},{"sctr":"Business Support 
    Services","amount":"1012020"},{"sctr":"Coal","amount":"1043550"}, 
    {"sctr":"Consumer Finance","amount":"2285000"},... 

我然后使用下面的代码，以除去键sctr和amount：

 $sector_final = array(); 
     array_push($sector_final, array("Sector", "Amount")); 
     foreach($sector_data as $row){ 
      array_push($sector_final, array_values($row)); 
     } 
     var_dump(json_encode($sector_final));' 

给予：

'[["Sector","Amount"],["Asset Managers","1586500"],["Auto 
Parts","1618000"],["Business Support Services","1012020"], 
["Coal","1043550"],["Consumer Finance","2285000"], 

然而的量必须不要在Google Chart Api的引号中起作用。

我该怎么做，还有一种更有效的方法来删除JSON的密钥？

Answer 1

尝试在特定元件铸入int喂食前/ puhsing它：

$sector_final = array(); 
array_push($sector_final, array("Sector", "Amount")); 
foreach($sector_data as $row){ 
    $row['amount'] = (int) $row['amount']; // cast it 
    array_push($sector_final, array_values($row)); 
} 

Answer 2

$sector_final = array(); 

    //array_push($sector_final, array("Sector", "Amount")); 
    foreach($sector_data as $row){ 

     $final = array("Sector" => "' . $row['sector'] . '", 
         "Amount" => $row['amount']); 

     array_push($sector_final, $final); 
    } 
    var_dump(json_encode($sector_final));