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POphp code of troubling getting multiple value
 

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    <p>I have codes that should be getting value from mysql database, I can get only one value but I have while loop so it can get value and output data separated with comma. But I only get one value and cannot get multiple value. the result should be like this, // End main PHP block. Data looks like this: [ [123456789, 20.9],[1234654321, 22.1] ] here is the code:</p> <pre><code>&lt;?php // connect to MySQL mysql_connect('localhost','','') or die("Can't connect that way!"); @mysql_select_db('temperature1') or die("Unable to select a database called 'temperature'"); if(ISSET($_GET['t']) &amp;&amp; (is_numeric($_GET['t'])) ){ // message from the Arduino $temp = $_GET['t']; $qry = "INSERT INTO tempArray(timing,temp) VALUES(".time().",'$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); $qryd = "SELECT id, timing, temp FROM tempArray WHERE timing&gt;='$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; $r = mysql_query($qryd); $count = mysql_num_rows($r); while($row=mysql_fetch_array($r, MYSQL_ASSOC)) { $tid=$row['id']; $dt = ($row['timing']+36000)*1000; $te = $row['temp']; if($te&gt;$maxtemp) $maxtemp=$te; // so the graph doesnt run along the top if($te&lt;$mintemp) $mintemp=$te; // or bottom of the axis $return="[$dt, $te]"; echo $return; //here I get all values [1385435831000, 21][1385435862000, 23][1385435892000, 22][1385435923000, 25][1385435923000, 22] $i++; if($i&lt;$count) $return= ","; echo $return; // if there is more data, add a ',' however, it return me ,,,[1385435923000, 22] $latest = "$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); ?&gt; </code></pre>
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