误差在解析参数使用PHP

串（59） “{” 状态 “：{” 消息 “：” 错误解析参数”， “值”：14} }”

但当而不是 “file_get_contents” 只 “echo” 时，它显示正确的URL作为输出：http://ws.geonames.org/countryCodeJSON?lat=20.992&lng=73.314&username=****

什么错误吗？

<?php 
    $servername = "localhost"; 
    $username = "*******"; 
    $password = "*************"; 
    $dbname = "id1116502_kk"; 

    // Check connection 
    if ($conn->connect_error) { 
     die("Connection failed: " . $conn->connect_error); 
    } 
    // Create connection 
    $conn = new mysqli($servername, $username, $password, $dbname); 

    // Check connection 
    if ($conn->connect_error) { 
     die("Connection failed: " . $conn->connect_error); 
    } 
    //remove limit 1 is you want multiple data. 
    $sql = "SELECT degree_n, minute_n,degree_e, minute_e FROM coordinates ORDER BY id DESC limit 1 "; 
    $result = $conn->query($sql); 
    $deg_e = ""; 
    $min_e = ""; 
    if ($result->num_rows > 0) { 
     // output data of each row 
     while($row = $result->fetch_assoc()) { 
      $deg_n = $row["degree_n"]; 
      $min_n = $row["minute_n"]; 
      $deg_e = $row["degree_e"]; 
      $min_e = $row["minute_e"]; 

      $url = file_get_contents('http://ws.geonames.org/countryCodeJSON?lat=$deg_n.$min_n&lng=$deg_e.$min_e&username=****'); 

      var_dump($url); 

     } 
    } else { 
     echo "0 results"; 
    } 
    $conn->close(); 

    ?>

来源

2017-04-21 Krunal Kshirsagar

您使用的是旅游单引号'file_get_contents' – julekgwa

日Thnx ... ...解决好 –

，这是不可能的那样的'echo'http：//ws.geonames.org/countryCodeJSON？lat = $ deg_n。$ min_n＆lng = $ deg_e。$ min_e＆username = ****';'解析变量。 –

您在使用单引号您file_get_contents

// change this to double quotes 
$url = file_get_contents('http://ws.geonames.org/countryCodeJSON?lat=$deg_n.$min_n&lng=$deg_e.$min_e&username=krunal123');

for more info check this post

来源

2017-04-21 09:29:14 julekgwa

[更多信息]（http://stackoverflow.com/questions/3446216/what-is-the-difference-between-single-quoted-and-double-quoted-strings-in-php） – DarkBee

误差在解析参数使用PHP

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