Difference between revisions of "JSON from arduino to PHP server"

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(Created page with "=====JSON from arduino to PHP server===== Encoding pin values in JSON: <sytaxhighlight> // last pieces of the HTTP PUT request: client.println("Content-Type: applicati...")
 
Line 11: Line 11:
     for (int analogChannel = 2; analogChannel < 6; analogChannel++) {
     for (int analogChannel = 2; analogChannel < 6; analogChannel++) {
       int sensorReading = analogRead(analogChannel);     
       int sensorReading = analogRead(analogChannel);     
       String schan = "\""+ sen + analogChannel + "\":";
       String schan = "\"sensor" + analogChannel + "\":";
       client.print(schan);
       client.print(schan);
       client.print(sensorReading);
       client.print(sensorReading);
Line 20: Line 20:
     client.println("}");
     client.println("}");
</syntaxhighlight>
</syntaxhighlight>
Reading arduino JSON from PHP server:
<sytaxhighlight>
<sytaxhighlight>
<?php
$thefile=file_get_contents("php://input");
    echo "I want ".sizeOf($thefile)." of them\n\n";
    echo ($thefile);
    $thearray = json_decode($thefile);
    print_r($thearray);
?>
</syntaxhighlight>
</syntaxhighlight>
Output produced:
<sytaxhighlight>
<sytaxhighlight>
{"sensor2":376,"sensor3":349,"sensor4":251,"sensor5":285}
stdClass Object
(
    [sensor2] => 376
    [sensor3] => 349
    [sensor4] => 251
    [sensor5] => 285
)
</syntaxhighlight>
</syntaxhighlight>
<sytaxhighlight>
<sytaxhighlight>
</syntaxhighlight>
</syntaxhighlight>

Revision as of 15:15, 12 January 2013

JSON from arduino to PHP server

Encoding pin values in JSON: <sytaxhighlight> 

   // last pieces of the HTTP PUT request:
   client.println("Content-Type: application/json");
   client.println("Connection: close");
   client.println();
     
   client.print("{"); 
   // here's the actual content of the PUT request:
   for (int analogChannel = 2; analogChannel < 6; analogChannel++) {
     int sensorReading = analogRead(analogChannel);    
     String schan = "\"sensor" + analogChannel + "\":";
     client.print(schan);
     client.print(sensorReading);
     if (analogChannel != 5) {
         client.print(",");
     }
    }
    client.println("}");

</syntaxhighlight> Reading arduino JSON from PHP server: <sytaxhighlight> <?php $thefile=file_get_contents("php://input"); 

   echo "I want ".sizeOf($thefile)." of them\n\n";
   echo ($thefile);
   $thearray = json_decode($thefile);
   print_r($thearray);

?> </syntaxhighlight> Output produced: <sytaxhighlight> {"sensor2":376,"sensor3":349,"sensor4":251,"sensor5":285} stdClass Object ( 

   [sensor2] => 376
   [sensor3] => 349
   [sensor4] => 251
   [sensor5] => 285

) </syntaxhighlight> <sytaxhighlight> </syntaxhighlight>

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