【发布时间】：2013-11-18 19:14:33
【问题描述】：
我试图从这个家伙网站复制部分代码，我正在和他做同样的事情。但在我的数据库中，我无法获得价值。这是链接temperature sensing。在我的 arduino 中，我在串行监视器中收到这样的值没有问题： GET /getData/temp.php?t=-23.00
但是当我去我的服务器检查数据库时，没有记录任何数据。这是我的 arduino 中的一些代码。
void getData() {
unsigned long previousMillis = 0;
unsigned long currentMillis = 0;
long interval = 8000; // 10 minutes (10*60*1000) 600000
char strURL[70];
EthernetClient client;
// If there's a successful connection, send the HTTP POST request
currentMillis = millis();
if(currentMillis - previousMillis > interval) {
previousMillis = currentMillis;
if (client.connect(server)) {
Serial.println("get data connecting...");
sprintf(strURL,"GET /collecting/temp.php?t=%d",ambientTemperature);
// EDIT: 'Host' to match your domain
client.println("Host:192.100.1.45 ");
client.println("User-Agent: Arduino/1.0");
client.println("Connection: close");
client.println("Content-Type: application/x-www-form-urlencoded;");
//Serial.println("Content-Type: application/x-www-form-urlencoded;");
client.print("Content-Length: ");
client.print(strURL);
client.println();
// client.print(strURL);
Serial.print(strURL);
}
else {
// If you couldn't make a connection:
Serial.println("Connection failed");
Serial.println("Disconnecting.");
client.stop();
}
}
}
这是插入的php代码。
<?php
// connect to MySQL
mysql_connect('localhost','temperature','123') or die("Can't connect that way!");
@mysql_select_db('temperature') or die("Unable to select a database called 'temperature'");
if(ISSET($_GET['t']) && (is_numeric($_GET['t'])) ){
// message from the Arduino
$temp = $_GET['t'];
$qry = "INSERT INTO tem(timing, temp) VALUES(".time().",'$temp')";
echo $qry;
mysql_query($qry);
mysql_close();
exit('200');
}
// no temp reading has been passed, lets show the chart.
$daysec = 60*60*24; //86,400
$daynow = time();
if(!$_GET['d'] || !is_numeric($_GET['d'])){
$dayoffset = 1;
} else {
$dayoffset = $_GET['d'];
}
$dlimit = $daynow-($daysec*$dayoffset);
$qryd = "SELECT id, timing, temp FROM tem WHERE timing>='$dlimit' ORDER BY id ASC LIMIT 1008";
// 1008 is a weeks worth of data,
// assuming 10 min intervals
$r = mysql_query($qryd);
$count = mysql_num_rows($r);
$i=0;
$maxtemp = 60; // moderate weather now, but this can be
$mintemp = 0; // adjusted if needed. Just sample values for the moment.
$return;
$r = mysql_query($qryd);
$count = mysql_num_rows($r);
while($row=mysql_fetch_array($r, MYSQL_ASSOC)) {
$tid=$row['id'];
$dt = ($row['timing']+36000)*1000;
$te = $row['temp'];
$te = (($te+252-500) / 10); // easier to do adjustments here
if($te>$maxtemp) $maxtemp=$te; // so the graph doesnt run along the top
if($te<$mintemp) $mintemp=$te; // or bottom of the axis
$return .= "[$dt, $te]";
$i++;
if($i<$count) $return .= ", ";// if there is more data, add a ','
$latest = "$dt|$te"; // this will get filled up with each one
}
mysql_close();
// convert $latest to actual date - easier to do it here than in javascript (which I loathe)
$latest = explode('|',$latest);
$latest[0] = date('g:ia, j.m.Y',(($latest[0])/1000)-36000);
// End main PHP block. Data looks like this: [ [123456789, 20.9],[1234654321, 22.1] ]
?>
【问题讨论】：
-
我在你的代码中看不到任何带有插入语句的sql查询！？
-
我可以看看 php 吗？此外，请使用 GET 或 POST，不要同时使用。
-
@735Tesla 是的，我贴出来了
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@user2196728 我发布了。
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你能加“print_r($_GET);”吗在您的 php 文件的“mysql_connect”行之前并将输出发送给我们？