php - 尝试读取json并用php将其写入sql

Question

我尝试从文件或url读取json，然后使用php将其写入sql

我编写了这段代码:

<?php
    //connect to mysql db
$username = "test";
$password = "test";
$database = "wordpressdb";
$host = "localhost";

$conn = mysqli_connect($host, $username, $password, $database)
    if($conn === false){
        die("FAIL" . mysqli_connect_error());
    }

    //read the json file contents
    $jsondata = file_get_contents('test.json');


//{"cod":"200","calctime":0.3107,"cnt":15,"list":[{"id":2208791,"name":"Yafran","coord":{"lon":12.52859,"lat":32.06329},"main":{"temp":9.68,"temp_min":9.681,"temp_max":9.681,"pressure":961.02,"sea_level":1036.82,"grnd_level":961.02,"humidity":85},"dt":1485784982,"wind":{"speed":3.96,"deg":356.5},"rain":{"3h":0.255},"clouds":{"all":88},"weather":[{"id":500,"main":"Rain","description":"light rain","icon":"10d"}]}]}




    //convert json object to php associative array
    $data = json_decode($jsondata, true);

    //get the employee details




    $cod = $data['cod'];
    $calctime = $data['calctime'];
    $cnt = $data['cnt'];
    $id = $data['list']['id'];
    $name = $data['list']['name'];
    $lon = $data['list']['coord']['lon'];
    $lat = $data['list']['coord']['lat'];
    $temp = $data['list']['main']['temp'];
    $min = $data['list']['main']['temp_min'];
    $max = $data['list']['main']['temp_max'];
    $pressure = $data['list']['main']['pressure'];
    $level = $data['list']['main']['sea_level'];
    $level2= $data['list']['main']['grnd_level'];
    $humidity = $data['list']['main']['humidity'];
    $dt = $data['list']['dt'];
    $speed = $data['list']['wind']['speed'];
    $deg = $data['list']['wind']['deg'];
    $h = $data['list']['rain']['3h'];
    $all = $data['list']['clouds']['all'];
    $id2 = $data['list']['weather']['id'];
    $main = $data['list']['weather']['main'];
    $description = $data['list']['weather']['description'];
    $icon = $data['list']['weather']['icon'];

    //insert into mysql table
    $sql = "INSERT INTO test(cod, calctime, cnt, id, name, lon, lat, temp, temp_min, temp_max, pressure, sea_level, grnd_level, humidity, dt, speed, deg, 3h, all, id, main, descriptio, icon)
    VALUES('$cod', '$calctime', '$cnt', '$id', '$name', '$lon', '$lat', '$temp', '$min', '$max', '$pressure', '$level', '$level2', '$humidity', '$dt', '$speed', '$deg', '$h', '$deg', '$all', '$id2', '$main', '$description', '$icon')";
   if(mysqli_query($link, $sql)){

    echo "Records inserted successfully.";

} else{

    echo "ERROR: Could not able to execute $sql. " . mysqli_error($conn);

}
?>

但是代码不起作用:(我是编程新手，我想知道如何制作这个(Json 到 php 到 mysql)。有人可以帮我修复代码吗？我正在尝试从 5 天开始修复它。

Answer 1

$link 未定义。在您的情况下，它应该是 $conn 。