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

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=====JSON from arduino to PHP server=====
=====JSON from arduino to PHP server=====
::php in /var/www/feeds/getnoise.php, arduino sketch /tim/Documents/electronics/Arduino/phptest/phptest.ino
Encoding pin values in JSON:
Encoding pin values in JSON:
<sytaxhighlight>
<syntaxhighlight>
     // last pieces of the HTTP PUT request:
     // last pieces of the HTTP PUT request:
     client.println("Content-Type: application/json");
     client.println("Content-Type: application/json");
Line 21: Line 22:
</syntaxhighlight>
</syntaxhighlight>
Reading arduino JSON from PHP server:
Reading arduino JSON from PHP server:
<sytaxhighlight>
<syntaxhighlight>
<?php
<?php
$thefile=file_get_contents("php://input");
$thefile=file_get_contents("php://input");
    echo "I want ".sizeOf($thefile)." of them\n\n";
echo ($thefile);
    echo ($thefile);
$thearray = json_decode($thefile);
    $thearray = json_decode($thefile);
print_r($thearray);
    print_r($thearray);
?>
?>
</syntaxhighlight>
</syntaxhighlight>
Output produced:
Output produced:
<sytaxhighlight>
<syntaxhighlight>
{"sensor2":376,"sensor3":349,"sensor4":251,"sensor5":285}
{"sensor2":376,"sensor3":349,"sensor4":251,"sensor5":285}
stdClass Object
stdClass Object

Latest revision as of 15:24, 12 January 2013

JSON from arduino to PHP server
php in /var/www/feeds/getnoise.php, arduino sketch /tim/Documents/electronics/Arduino/phptest/phptest.ino

Encoding pin values in JSON: <syntaxhighlight> 

   // 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: <syntaxhighlight> <?php $thefile=file_get_contents("php://input"); echo ($thefile); $thearray = json_decode($thefile); print_r($thearray); ?> </syntaxhighlight> Output produced: <syntaxhighlight> {"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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