oeniir Posted December 17, 2006 Share Posted December 17, 2006 Hi,A newbie question. I am trying to calculate average exchange rates from the daily rates extracted from an XML file. I store all the extracted rates into an array, but when I try to add them up using array_sum, I get 0 as a result. Any idea what might be wrong? I also tried adding up the array results "manually", but it seems that doing that ignores all the decimal numbers.Here's the code (I've been testing various things, so it has some weird statements):[code]$xmlsource=simplexml_load_file('http://www.catoss.com/labs/eurofxref-hist-90d.xml');print "<html><head><title>Currency Converter</title></head><body><h1>Current Exchange Rates</h1>";$ratesArray;foreach ($xmlsource->Cube->Cube as $dates) { foreach ($dates->Cube as $currencies) { if ($currencies['currency'] == "SEK") { //print substr($dates['time'], 0, 4) . " - "; //print $currencies['currency'] . ": "; $ratesArray[] = $currencies['rate']; //print $currencies['rate'] . "<br>"; } else { // nothing here yet } }}$test = $ratesArray[0]+$ratesArray[1];print $test . "<br>";print array_sum($ratesArray) . "<br>";print count($ratesArray) . "<br>";$avgExchangeRate = $total/count($ratesArray);print "The average exchange rate for the past 90 days is $avgExchangeRate";print "</body></html>";?>[/code] Link to comment https://forums.phpfreaks.com/topic/30973-array_sum-returns-0/ Share on other sites More sharing options...
Barand Posted December 17, 2006 Share Posted December 17, 2006 What does this output?[code]echo '<pre>', print_r($ratesArray, true), '</pre>';[/code] Link to comment https://forums.phpfreaks.com/topic/30973-array_sum-returns-0/#findComment-143049 Share on other sites More sharing options...
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