javascript - 将城市名称从 php 传递到 js(第 2 部分)

Question

续。上Show Malaysia cities based on states chosen

• 城市数据 json ($cityJsonObject)

  Array ( [0] => stdClass Object ( [cityId] => c1 [cityName] => Kajang [cityStateId] 
  => s2 ) [1] => stdClass Object ( [cityId] => c2 [cityName] => Seputeh 
  [cityStateId] => s1 ) [2] => stdClass Object ( [cityId] => c3 [cityName] => Shah 
  Alam [cityStateId] => s2 ) [3] => stdClass Object ( [cityId] => c4 [cityName] => 
  Klang [cityStateId] => s2 ) [4] => stdClass Object ( [cityId] => c5 [cityName] => 
  Kepong [cityStateId] => s1 ))
  

• 代码(城市名称)

  <?php
      for($i = 0; $i < count($cityJsonObject); $i++)
      {
          echo $cityJsonObject[$i]->cityName;
  
          //PASS VARIABLE TO JS
      }
  ?>
  
  <script type="text/javascript">
      //GET VARIABLE FROM PHP AND DISPLAY CITY NAME
  </script>
  

• 从上面的代码中，我可以得到以下信息:

  Kajang 
  Seputeh
  Shah Alam
  Klang
  Kepong
  

• 我的问题是如何将上面的城市名称传递到变量中并传递给js？我应该怎么做？

Answer 1

您可以使用json_encode并输出一个可以被javascript轻松解析的字符串

试试这个代码

<?php
    $array_to_js = array();

    for($i = 0; $i < count($cityJsonObject); $i++)
    {
        $array_to_js[] = $cityJsonObject[$i]->cityName;
    }
?>

<script type="text/javascript">
    //GET VARIABLE FROM PHP AND DISPLAY CITY NAME
    var js_array = <?php echo json_encode($array_to_js, JSON_HEX_QUOT) ?>;
</script>