Question

我们正在从API导入JSON。 JSON正在顺利但无序

我们想通过名称字段对JSON文件进行排序，我们使用了uasort，但它似乎没有生效吗？

 $url="https://dev-api.ourwebsite.com";
 $ch = curl_init();
// Disable SSL verification
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
// Will return the response, if false it print the response
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// Set the url
curl_setopt($ch, CURLOPT_URL,$url);
// Execute
$result=curl_exec($ch);



// DUMPING THE JSON
$json=json_decode($result, true);


uasort($json, 'name');  



foreach($json as $value) {


$course_name=$value["name"];


}

Answer 1

usort()（或uasort()，如果需要保留数组的键）是您需要的：

<?php
// mocking some data
$json = [
    ["name" => "paul"],
    ["name" => "jeff"],
    ["name" => "anna"]

];

uasort($json, 
      // this callable needs to return 1 or -1, depending on how you want it to sort
      function($a, $b) {
        if($a['name']>$b['name']) {
            return 1;
        } else {
            return -1;
        }

     });

var_dump($json);

foreach($json as $value) {
    $course_name=$value["name"];
    echo $course_name."<br>";
}
// output:
array(3) {
  [2]=>
  array(1) {
    ["name"]=>
    string(4) "anna"
  }
  [1]=>
  array(1) {
    ["name"]=>
    string(4) "jeff"
  }
  [0]=>
  array(1) {
    ["name"]=>
    string(4) "paul"
  }
}
anna
jeff
paul

通过JSON排序

1 个答案: