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POphp xml read out max value on each days
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  1. POphp xml read out max value on each days
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    copied!<p>I have a problem where i tries to read out a max temperature value on each day from an xml file. My xml file looks like: </p> <pre><code>&lt;?xml version="1.0"?&gt; &lt;temperature&gt; &lt;measure&gt; &lt;date&gt;2013-06-19 03:18&lt;/date&gt; &lt;sensor1&gt;25.38&lt;/sensor1&gt; &lt;/measure&gt; &lt;measure&gt; &lt;date&gt;2013-06-19 06:18&lt;/date&gt; &lt;sensor1&gt;26.38&lt;/sensor1&gt; &lt;/measure&gt; &lt;measure&gt; &lt;date&gt;2013-06-19 09:18&lt;/date&gt; &lt;sensor1&gt;30.31&lt;/sensor1&gt; &lt;/measure&gt; &lt;measure&gt; &lt;date&gt;2013-06-20 03:18&lt;/date&gt; &lt;sensor1&gt;25.31&lt;/sensor1&gt; &lt;/measure&gt; &lt;measure&gt; &lt;date&gt;2013-06-20 06:18&lt;/date&gt; &lt;sensor1&gt;23.34&lt;/sensor1&gt; &lt;/measure&gt; &lt;measure&gt; &lt;date&gt;2013-06-21 07:18&lt;/date&gt; &lt;sensor1&gt;26.31&lt;/sensor1&gt; &lt;/measure&gt; &lt;measure&gt; &lt;date&gt;2013-06-21 10:18&lt;/date&gt; &lt;sensor1&gt;25.31&lt;/sensor1&gt; &lt;/measure&gt; &lt;/temperature&gt; </code></pre> <p>And what i want as output is like:</p> <pre><code>06/19 max 30.31 06/20 max 25.31 06/21 max 26.31 </code></pre> <p>As im still learning php im stuck. The code i have produced so far is:</p> <pre><code>&lt;?php $xml = simplexml_load_file("test.xml"); $days = array(); $sens1Array = array(); foreach($xml as $temp){ $days[] = $temp-&gt;date . "," . $temp-&gt;sensor1; } $days = array_unique($days); foreach($days as $day){ $day= explode(",", $day); $time = date("m/d", strtotime($day[0])); echo $time . " "; echo "max " . $day[1]; echo "&lt;br&gt;"; } ?&gt; </code></pre> <p>Which outputs:</p> <pre><code>06/19 max 25.38 06/19 max 26.38 06/19 max 30.31 06/20 max 25.31 06/20 max 23.34 06/21 max 26.31 06/21 max 25.31 </code></pre> <p>So what im looking for is some code that can compare each day and only output the max value for that day. I have searched and tried a lot but i can't solve it. </p>
 

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