PHP和MySQL数据库从Json文件插入
[英]php & mysql db insert from Json file
问题描述
正如您中某些人所建议的那样，我正在尝试自动将mysql链接自动链接到json源并更新数据库。
所以我正在创建我的PHP文件以插入数据。 我不知道为什么它不能在这里运行代码：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<link href="table-db.css" rel="stylesheet" type="text/css">
<title>Monetary Marker 12h update</title>
</head>
<body>
<?php
//connect to mysql db
$servername = "localhost";
$username = "username";
$password = "";
$dbname = "my_db";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully <br />";
// NAME funzione
insertData:
//VALUES from JSON
$jsondata = file_get_contents('exchanges.json');
$data = json_decode($jsondata, true);
//convert json object to php associative array
$countryID = $data['country']['id'];
$countryName = $data['country']['name'];
$countryCurrency = $data['country']['currency'];
$buyRate = $data['country']['buy_rate'];
$sellRate = $data['country']['sell_rate'];
//VALUES DATE&HOUR
date_default_timezone_set('UTC+1');
$timestamp = date('Y-m-d H:i:s');
$spreadBuySell = (1/$buyRate)-$sellRate;
foreach($data as $item) {
$sqlinsert = ("INSERT INTO MonetaryExchange12h (countryID,countryName,countryCurrency,buyRate,sellRate,BuySellSpread,saveDateTime)
VALUES ('".$item['$countryID']."','".$item['$countryName']."','".$item['$countryCurrency']."','".$item['$buyRate']."','".$item['$sellRate']."','".$item['$spreadBuySell']."','".$item['$timestamp']."')");
}
if ($conn->query($sqlinsert) === TRUE) {
echo "New record created successfully <br />";
} else {
echo "Error: " . $sqlinsert . "<br>" . $conn->error;
};
$conn->close();
?>
<?php
// TABLE SHOW TEST
//connect to mysql db
$servername = "localhost";
$username = "username";
$password = "";
$dbname = "mydb";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully <br />";
$sql = "SELECT countryID,countryName,countryCurrency,buyRate,sellRate,BuySellSpread,saveDa teTime FROM MonetaryExchange12h ORDER BY ID DESC";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
echo '<table cellpadding="0" cellspacing="0" class="db-table">';
echo '<tr><th>Country ID</th><th>Country</th><th>Currency</th><th>buy Rate</th><th>sell Rate</th><th>Spread</th><th>Time Record</th></tr>';
// output data of each row
while($row = $result->fetch_assoc()) {
echo "<tr><td>".$row["countryID"]."</td><td>".$row["countryName"]."</td><td>".$row["countryCurrency"]."</td><td>".$row["buyRate"]."</td><td>".$row["sellRate"]."</td><td>".$row["BuySellSpread"]."</td><td>".$row["saveDateTime"]."</td></tr>";
}
echo "</table>";
} else {
echo "0 results";
};
$conn->close();
?>
</body>
</html>
这是我的json文件的一部分：
{"country": [{"id":24,"name":"Argentina","currency":"ARS","buy_rate":0.046,"sell_rate": 30.8747}, {"id":35,"name":"Australia","currency":"AUD","buy_rate":0.0799,"sell_rate": 99.5156},{"id":13,"name":"Bosnia and Herzegovina","currency":"BAM","buy_rate":0.0788,"sell_rate":20.4999}],"load":0.59583497047424}
你能告诉我我哪里错了吗？
第一次更新
首先，首先要回答。 我已经测试过代码，但是它只返回1个条目，更确切地说是最后一个。 我想念什么？
$jsondata = file_get_contents('exchanges.json');
$data = json_decode($jsondata, true);
foreach($data['country'] as $item) {
$sqlinsert = "INSERT INTO MonetaryExchange12h (countryID,countryName,countryCurrency,buyRate,sellRate) VALUES ('{$item['id']}','{$item['name']}','{$item['currency']}','{$item['buy_rate']}','{$item['sell_rate']}')";
2 个解决方案
解决方案1
1 2015-05-19 01:29:55
如果您有错误报告，您会看到解码的json数组是一个关联数组。 因此您的代码将无法正常工作。
ini_set('display_errors', 1);
error_reporting(-1);
含义：您必须遍历各个国家或获取第一个国家。
foreach($data['country'] as $country) {
$countryID = $country['id'];
//...add the rest
}
或仅执行第一个元素：
$countryID = $data['country'][0]['id'];
//...add the rest.
笔记
- 在过早关闭
foreach同时，您还将覆盖$sqlinsert变量。因此，它只会输入最后一个值。 - 您多余地设置了变量
$countryID/$countryName/..etc，您应该将foreach循环更改为如下所示：
foreach($data['country'] as $item) {
$sqlinsert = "INSERT INTO table (column,.....) VALUES ('{$item['id']}',...)";
if ($conn->query($sqlinsert) === TRUE) {
echo "New record created successfully <br />";
} else {
echo "Error: " . $sqlinsert . "<br>" . $conn->error;
}
}
解决方案2
0 2015-05-20 15:16:37
好吧，我终于做到了。 谢谢您的帮助。
最终的代码是：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<link href="table-db.css" rel="stylesheet" type="text/css">
<title>Monetary Marker 12h update</title>
</head>
<body>
<?php
//check errors
ini_set('display_errors', 1);
error_reporting(-1);
//connect to mysql db
$servername = "localhost";
$username = "username";
$password = "";
$dbname = "my_db";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully <br />";
// NOME funzione
insertData:
$url = "http://esimeconomytools.altervista.org/monetarymarket/exchanges.json";
$json = file_get_contents($url);
$out = json_decode($json, true);
$dataCountry = $out['country'];
//$idCountry = $out['country']['id'];
foreach($dataCountry as $country) {
$idCountry = addslashes($country['id']);
$nameCountry = addslashes($country['name']);
$Currency = addslashes($country['currency']);
$buyRate = addslashes($country['buy_rate']);
$sellRate = addslashes($country['sell_rate']);
$sqlinsert = "INSERT INTO MonetaryExchange12h (countryID,countryName,countryCurrency,buyRate,sellRate) VALUES ('$idCountry','$nameCountry','$Currency','$buyRate','$sellRate')";
if ($conn->query($sqlinsert) === TRUE) {
echo "New record created successfully <br />";
} else {
echo "Error: " . $sqlinsert . "<br>" . $conn->error;
}};
$conn->close();
?>
请特别注意在何处放置“;” 在INSERT INTO命令的末尾。 在那里，它将结束脚本的活动。
因此，如果您使用“ foreach”，则必须输入“;”。 在函数的最后，否则您将在第一次（或最后一次）插入后中断循环。
谢谢大家。 如果您中的任何人都有指向php跨域JSON数据检索的好教程的链接，欢迎使用。
阿尔贝托
将 JSON 文件传递到 php 服务器，然后将其中的数据保存到 Mysql 数据库中
[英]Passing a JSON file to a php server and then save the data from it into a Mysql DB
PHP：从文件中获取内容并插入mysql db，避免再次插入已经插入的数据
[英]Php: Get content from file and insert into mysql db, avoid insertion of data again which already got inserted
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.