php中来自mysql数据库的Javascript数组

Question

 var chartData = [{
     "country": "Czech Republic",
     "litres": 156.9
 }, {
     "country": "Ireland",
     "litres": 131.1
 }, {
     "country": "Germany",
     "litres": 115.8
 }, {
     "country": "Australia",
     "litres": 109.9
 }, {
     "country": "Austria",
     "litres": 108.3
 }, {
     "country": "UK",
     "litres": 65
 }, {
     "country": "Belgium",
     "litres": 50
 }];

我想在 php 中使用 mysql 数据库创建这个数组，我该怎么做？

Answer 1

您可以从数据库中以数组格式获取记录，然后它将转换为 json 对象。尝试下面的代码

// fetch the record form mysql table using mysqli_fetch_assoc() and store it in $chartData
    // then use json_decode() function used to convert the array into object format
    $chartData[] = array("country"=> "Czech Republic", "litres"=> 156.9);
    $chartData[] = array("country"=> "Czech Republic", "litres"=> 156.9);
    $chartData[] = array("country"=> "Czech Republic", "litres"=> 156.9);
    $chartData[] = array("country"=> "Czech Republic", "litres"=> 156.9);
    $chartData[] = array("country"=> "Czech Republic", "litres"=> 156.9);
    $chartData[] = array("country"=> "Czech Republic", "litres"=> 156.9);
    echo '<pre>';
    var_dump(json_encode($chartData));

我认为这对你有帮助..:-)