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php-units-of-measure PHP library for unit of measurement conversion
<?php
namespace PhpUnitsOfMeasure;
/**
* Physical quantities with this trait
* have units which are metric and therefore have
* a standard set of prefixes.
*/
trait HasSIUnitsTrait
{
protected static function addMissingSIPrefixedUnits(
UnitOfMeasure $siUnit,
$toBaseSiUnitFactor,
$namePattern,
array $aliasPatterns = []
) {
/**
* The standard set of SI prefixes
*/
$siPrefixes = [
[
'abbr_prefix' => 'Y',
'long_prefix' => 'yotta',
'factor' => 1e24
],
[Measurement is to use data to describe observed phenomena according to certain rules, that is, to make a quantitative description of things. Measurement is the quantification process of non-quantified physical objects.
In mechanical engineering, measurement refers to the experimental understanding process of numerically comparing a measured quantity with a standard quantity with a unit of measurement to determine the ratio between the two.
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