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<?php $xml = "<root> <quoteDay> <date>2018-02-26</date> <close>1586,96</close> </quoteDay> <quoteDay> <date>2018-02-23</date> <close>1577,11</close> </quoteDay> <quoteDay> <date>2018-02-22</date> <close>1565,5</close> </quoteDay> </root>"; $xml = simplexml_load_string($xml) or die("Error: Cannot create object"); $id = 0; $daysInMovingMean = 3; foreach ($xml->quoteDay as $quoteDay) { echo "Moving average for ".$quoteDay->date.":".PHP_EOL; $current = (float) str_replace(",", ".", $quoteDay->close); $sum = 0; for ($days = 0; $days < $daysInMovingMean; $days++) { if (!$xml->quoteDay[$id + $days]) break; $sum += (float) str_replace(",", ".", $xml->quoteDay[$id + $days]->close); } $sumovingMean = $sum / $days; echo $sumovingMean.PHP_EOL; echo PHP_EOL; $id++; }
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
Moving average for 2018-02-26: 1576.5233333333 Moving average for 2018-02-23: 1571.305 Moving average for 2018-02-22: 1565.5
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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