<?php $tests = [ "7.2769482308e+01", "3.43E-6", "2.54E-14", "99.87E-2" ]; foreach($tests as $test){ echo $test, " => ", getFormattedDecimal($test),PHP_EOL; } function getFormattedDecimal($str){ $precision = explode("e", strtolower($str)); $precision = substr($precision[1], 1); // remove + and - operators return sprintf("%.".$precision."f", $str); }
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