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PHP CURL＼JSON 应用

API 天气接口请求
curl
json_decode
json_encode

PHP 代码

<?php
    define('JUHE_API','http://apis.juhe.cn/simpleWeather/query');
    define('JUHE_KEY','abc4b64ae7656b460723402175a5650b');
    function getTianqi(string $city,$isget=1){
        $data = ['key'=> JUHE_KEY,'city'=>$city];
        $url = JUHE_API.'?';
        $ch = curl_init();
        curl_setopt($ch,CURLOPT_URL,JUHE_API);
        curl_setopt($ch,CURLOPT_TIMEOUT,30);
        curl_setopt($ch,CURLOPT_AUTOREFERER,1);
        curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
        if ($isget) {
            foreach ($data as $k => $v) {
                $url .= $k.'='.$v.'&';
            }
            curl_setopt($ch,CURLOPT_URL,$url);
        } else {
            curl_setopt($ch,CURLOPT_POST,1);
            curl_setopt($ch,CURLOPT_POSTFIELDS,$data);
        }
        $rs = curl_exec($ch);
        curl_close($ch);
        return json_decode($rs,true);
    }
    $arrs = getTianqi(isset($_POST['city'])?$_POST['city']:'北京',0);
    $errorMessage='';
    if ($arrs['error_code'] == 0) {
        $city = $arrs['result']['city'];
        $real = $arrs['result']['realtime'];
        $future = $arrs['result']['future'];
        $futureHTML = '<table class="table"><thead class="thead-dark"><tr><th>日期:</th><th>温度</th><th>天气情况</th><th>风向</th></tr><thead/>';
        foreach ($future as $f) {
            $futureHTML.= "<tr><td>".$f['date']."</td>";
            $futureHTML.= "<td>".$f['temperature']."</td>";
            $futureHTML.= "<td>".$f['weather']."</td>";
            $futureHTML.= "<td>".$f['direct']."</td></tr>";
        }
        $futureHTML .= '</table>';
    } else {
        $errorMessage = $arrs['reason'];
    }
?>

HTML 代码

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>天气预报</title>
    <link
      href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.6.0/css/bootstrap.css"
      rel="stylesheet"
    />
    <style>
      .lead label {
        margin-right: 10px;
      }
    </style>
  </head>
  <body>
    <?=$errorMessage?>
    <div
      class="jumbotron"
      style="display:<?=!empty($errorMessage)?'none':'block'?>;"
    >
      <h1 class="display-4">当前城市天气:</h1>
      <p class="lead">
        <label>城市:<?=!empty($city)?$city:'暂无数据'?></label>
        <label
          >温度:<?=!empty($real['temperature'])?$real['temperature']:''?>℃</label
        >
        <label>天气:<?=!empty($real['info'])?$real['info']:''?></label>
        <label>湿度:<?=!empty($real['humidity'])?$real['humidity']:''?></label>
        <label>风向:<?=!empty($real['direct'])?$real['direct']:''?></label>
        <label>风力:<?=!empty($real['power'])?$real['power']:''?></label>
        <label>空气质量:<?=!empty($real['aqi'])?$real['aqi']:''?></label>
      </p>
      <hr class="my-4" />
      <form action="" method="post" class="input-group">
        <input
          class="form-control"
          type="text"
          name="city"
          value="<?=$city?>"
          placeholder="请输入城市名称"
        />
        <button class="btn btn-primary input-group-append" type="submit">
          查询天气
        </button>
      </form>
      <hr class="my-4" />
      <p>近5天天气情况:</p>
      <?=!empty($futureHTML)?$futureHTML:'暂无数据'?>
    </div>
  </body>
</html>

运行结果:

批改老师：

PHPz

批改状态：合格

老师批语：

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第一课学习准备

2021-07-23 20:28:13