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+<?php namespace Abhimanyusharma003\Conversion;
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+
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+class Conversion {
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+
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+ // Acceleration
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+ const METRE_PER_SECOND_SQUARED = 'm/s^2';
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+
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+ // Angle
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+ const TURN = 'turn';
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+ const RADIAN = 'rad';
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+ const DEGREE = 'deg';
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+ const GRADIAN = 'grad';
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+
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+ // Area
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+ // Metric system
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+ const SQUARE_METRE = 'm^2';
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+ const HECTARE = 'ha';
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+ const SQUARE_KILOMETRE = 'km^2';
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+ // Imperial system
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+ const SQUARE_INCH = 'in^2';
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+ const SQUARE_FEET = 'ft^2';
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+ const SQUARE_YARD = 'yd^2';
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+ const ACRE = 'ac';
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+ const SQUARE_MILE = 'mi^2';
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+
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+ // Storage
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+ const BIT = 'b';
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+ const BYTE = 'B';
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+ const KILOBIT = 'kb';
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+ const KILOBYTE = 'kB';
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+ const MEGABIT = 'Mb';
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+ const MEGABYTE = 'MB';
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+ const GIGABIT = 'Gb';
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+ const GIGABYTE = 'GB';
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+ const TERABIT = 'Tb';
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+ const TERABYTE = 'TB';
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+ const PETABIT = 'Pb';
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+ const PETABYTE = 'PB';
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+
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+ // Current
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+ const STATAMPERE = 'statA';
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+ const MICROAMPERE = 'uA';
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+ const MILLIAMPERE = 'mA';
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+ const ABAMPERE = 'aA';
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+ const AMPERE = 'A';
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+ const KILOAMPERE = 'kA';
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+
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+ // Fuel
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+ // Metric units
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+ const KILOMETRES_PER_LITRE = 'km/L';
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+ const LITRE_PER_100_KILOMETRES = 'L/100 km';
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+ // Imperial units
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+ const MILES_PER_GALLON = 'mpg';
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+ // US units
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+ const US_MILES_PER_GALLON = 'us mpg';
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+
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+ // Length
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+ // Metric system
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+ const MILLIMETRE = 'mm';
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+ const CENTIMETRE = 'cm';
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+ const METRE = 'm';
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+ const KILOMETRE = 'km';
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+ // Imperial system
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+ const INCH = 'in';
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+ const FOOT = 'ft';
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+ const YARD = 'yd';
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+ const MILE = 'mi';
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+ // Other systems
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+ const NAUTICAL_MILE = 'nmi';
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+
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+ // Mass
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+ // Metric system
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+ const MICROGRAM = 'mcg';
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+ const MILLIGRAM = 'mg';
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+ const GRAM = 'g';
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+ const KILOGRAM = 'kg';
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+ const METRIC_TON = 't';
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+ // Imperial system
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+ const OUNCE = 'oz';
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+ const POUND = 'lb';
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+ const STONE = 'st';
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+ const SHORT_TON = 's. t.';
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+ const LONG_TON = 'l. t.';
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+
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+ // Pressure
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+ const PASCAL = 'Pa';
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+ const KILOPASCAL = 'kPa';
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+ const MEGAPASCAL = 'MPa';
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+ const BAR = 'bar';
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+ const MILLIMETRES_OF_MERCURY = 'mmHg';
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+ const ATMOSPHERE = 'atm';
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+ const INCHES_OF_MERCURY = 'inHg';
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+ const POUNDS_PER_SQUARE_INCH = 'psi';
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+
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+ // Speed
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+ // Metric units
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+ const METRE_PER_SECOND = 'm/s';
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+ const KILOMETRES_PER_HOUR = 'km/h';
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+ // Imperial units
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+ const FEET_PER_SECOND = 'ft/s';
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+ const MILES_PER_HOUR = 'mph';
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+ // Other units
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+ const KNOT = 'kn';
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+
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+ // Temperature
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+ const CELSIUS = 'C';
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+ const FAHRENHEIT = 'F';
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+ const KELVIN = 'K';
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+
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+ // Time
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+ const NANOSECOND = 'ns';
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+ const MICROSECOND = 'us';
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+ const MILLISECOND = 'ms';
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+ const SECOND = 's';
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+ const MINUTE = 'min';
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+ const HOUR = 'hr';
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+ const DAY = 'd';
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+ const WEEK = 'wk';
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+ const MONTH = 'mo';
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+ const YEAR = 'a';
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+ const DECADE = 'decade';
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+ const CENTURY = 'century';
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+ const MILLENIUM = 'ka';
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+
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+ // Voltage
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+ const VOLT = 'V';
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+ const KILOVOLT = 'KV';
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+
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+ // Volume
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+ // Metric system
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+ const MILLILITRE = 'mL';
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+ const LITRE = 'L';
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+ const CUBIC_METRE = 'm^3';
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+ // Imperial system
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+ const GALLON = 'gal';
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+ const QUART = 'qt';
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+ const PINT = 'pt';
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+ const CUP = 'c';
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+ const TABLESPOON = 'tbsp';
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+ const TEASPOON = 'tsp';
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+ // US system
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+ const US_GALLON = 'us gal';
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+ const US_QUART = 'us qt';
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+ const US_PINT = 'us pt';
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+ const US_CUP = 'us c';
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+ const US_OUNCE = 'us oz';
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+ const US_TABLESPOON = 'us tbsp';
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+ const US_TEASPOON = 'us tsp';
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+ // Other units
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+ const CUBIC_INCH = 'in^3';
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+ const CUBIC_FOOT = 'ft^3';
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+
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+ /**
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+ * @var array
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+ */
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+ protected static $conversionChart = array(
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+ // Acceleration
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+ Conversion::METRE_PER_SECOND_SQUARED => 1,
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+
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+ // Angle
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+ Conversion::TURN => 6.28318531,
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+ Conversion::RADIAN => 1,
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+ Conversion::DEGREE => 0.0174532925,
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+ Conversion::GRADIAN => 0.015707963267949,
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+
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+ // Area
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+ Conversion::SQUARE_METRE => 1,
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+ Conversion::HECTARE => 100,
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+ Conversion::SQUARE_KILOMETRE => 1000000,
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+ Conversion::SQUARE_INCH => 0.00064516,
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+ Conversion::SQUARE_FEET => 0.09290304,
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+ Conversion::SQUARE_YARD => 0.83612736,
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+ Conversion::ACRE => 247.105,
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+ Conversion::SQUARE_MILE => 2589988.110336,
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+
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+ // Storage
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+ Conversion::BIT => 0.00012207,
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+ Conversion::BYTE => 0.000976563,
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+ Conversion::KILOBIT => 0.125,
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+ Conversion::KILOBYTE => 1,
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+ Conversion::MEGABIT => 128,
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+ Conversion::MEGABYTE => 1024,
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+ Conversion::GIGABIT => 131072,
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+ Conversion::GIGABYTE => 1.049e+6,
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+ Conversion::TERABIT => 1.342e+8,
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+ Conversion::TERABYTE => 1.074e+9,
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+ Conversion::PETABIT => 1.374e+11,
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+ Conversion::PETABYTE => 1.1e+12,
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+
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+ // Current
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+ Conversion::STATAMPERE => 3.33564e-10,
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+ Conversion::MICROAMPERE => 1e-06,
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+ Conversion::MILLIAMPERE => 0.001,
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+ Conversion::AMPERE => 1,
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+ Conversion::ABAMPERE => 10,
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+ Conversion::KILOAMPERE => 1000,
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+
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+ // Fuel
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+ Conversion::KILOMETRES_PER_LITRE => 1,
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+ Conversion::LITRE_PER_100_KILOMETRES => 100,
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+ Conversion::MILES_PER_GALLON => 0.354006,
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+ Conversion::US_MILES_PER_GALLON => 0.425144,
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+
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+ // Length
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+ Conversion::MILLIMETRE => 0.001,
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+ Conversion::CENTIMETRE => 0.01,
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+ Conversion::METRE => 1,
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+ Conversion::KILOMETRE => 1000,
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+ Conversion::INCH => 0.0254,
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+ Conversion::FOOT => 0.3048,
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+ Conversion::YARD => 0.9144,
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+ Conversion::MILE => 1609.34,
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+ Conversion::NAUTICAL_MILE => 1852,
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+
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+ // Mass
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+ Conversion::MICROGRAM => 1e-7,
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+ Conversion::MILLIGRAM => 1e-6,
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+ Conversion::GRAM => 0.001,
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+ Conversion::KILOGRAM => 1,
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+ Conversion::METRIC_TON => 100,
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+ Conversion::OUNCE => 0.0283495,
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+ Conversion::POUND => 0.453592,
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+ Conversion::STONE => 6.35029,
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+ Conversion::SHORT_TON => 907.185,
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+ Conversion::LONG_TON => 1016.0469088,
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+
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+ // Pressure
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+ Conversion::PASCAL => 1,
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+ Conversion::KILOPASCAL => 1000,
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+ Conversion::MEGAPASCAL => 1e6,
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+ Conversion::BAR => 1e5,
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+ Conversion::MILLIMETRES_OF_MERCURY => 133.3224,
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+ Conversion::INCHES_OF_MERCURY => 3.386389e3,
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+ Conversion::POUNDS_PER_SQUARE_INCH => 6.894757e3,
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+ Conversion::ATMOSPHERE => 101325,
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+
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+ // Speed
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+ Conversion::METRE_PER_SECOND => 1,
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+ Conversion::KILOMETRES_PER_HOUR => 0.277778,
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+ Conversion::FEET_PER_SECOND => 0.3048,
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+ Conversion::MILES_PER_HOUR => 0.44704,
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+ Conversion::KNOT => 0.514444,
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+
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+ // Temperature
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+ Conversion::CELSIUS => 273.15,
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+ Conversion::FAHRENHEIT => 255.372,
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+ Conversion::KELVIN => 1,
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+
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+ // Time
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+ Conversion::NANOSECOND => 1e-9,
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+ Conversion::MICROSECOND => 1e-6,
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+ Conversion::MILLISECOND => 0.001,
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+ Conversion::SECOND => 1,
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+ Conversion::MINUTE => 60,
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+ Conversion::HOUR => 3600,
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+ Conversion::DAY => 86400,
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+ Conversion::WEEK => 604800,
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+ Conversion::MONTH => 2.62974e6,
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+ Conversion::YEAR => 3.15569e7,
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+ Conversion::DECADE => 3.15569e8,
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+ Conversion::CENTURY => 3.15569e9,
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+ Conversion::MILLENIUM => 3.1556926e10,
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+
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+ // Voltage
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+ Conversion::VOLT => 1,
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+ Conversion::KILOVOLT => 1000,
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+
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+ // Volume
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+ Conversion::MILLILITRE => 1e-6,
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+ Conversion::LITRE => 0.001,
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+ Conversion::CUBIC_METRE => 1,
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+ Conversion::GALLON => 0.00454609,
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+ Conversion::QUART => 0.00113652,
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+ Conversion::PINT => 0.000568261,
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+ Conversion::TABLESPOON => 1.7758e-5,
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+ Conversion::TEASPOON => 5.9194e-6,
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+ Conversion::US_GALLON => 0.00378541,
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+ Conversion::US_QUART => 0.000946353,
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+ Conversion::US_PINT => 0.000473176,
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+ Conversion::US_CUP => 0.000236588,
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+ Conversion::US_OUNCE => 2.9574e-5,
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+ Conversion::US_TABLESPOON => 1.4787e-5,
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+ Conversion::US_TEASPOON => 4.9289e-6,
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+ Conversion::CUBIC_INCH => 1.6387e-5,
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+ Conversion::CUBIC_FOOT => 0.0283168,
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+ );
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+
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+ /**
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+ * @var string
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+ */
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+ protected $value;
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+
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+
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+ /**
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+ * @var string
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+ */
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+ protected $unit;
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+
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+
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+ /**
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+ * @var
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+ */
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+ protected static $native;
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+
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+ /**
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+ * @var null
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+ */
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+ protected $number = null;
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+ /**
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+ * @var
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+ */
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+ protected $type;
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+
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+ /**
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+ * @param string $quantity
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+ * @param string $unit
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+ */
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+ public function __construct($quantity = '', $unit = '')
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+ {
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+ $this->unit = $unit;
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+ $this->value = $quantity;
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+ }
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+
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+ /**
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+ * @param $quanity
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+ * @param $unit
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+ * @return Conversion
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+ */
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+ public function convert($quanity, $unit)
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+ {
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+ return new Conversion($quanity, $unit);
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+ }
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+
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+
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+ /**
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+ * @param $unit
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+ * @return $this
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+ */
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+ public function to($unit)
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+ {
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+ $this->value = $this->process($this->unit, $unit, $this->value);
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+ $this->unit = $unit;
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+
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+ return $this;
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+ }
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+
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+
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+ /**
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+ * @param $from
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+ * @param $to
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+ * @param $value
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+ * @return float
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+ * @throws \Exception
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+ */
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+ protected function process($from, $to, $value)
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+ {
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+ return ($value * $this->getConversion($from)) / $this->getConversion($to);
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+ }
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+
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+
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+ /**
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+ * @param $unit
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+ * @return mixed
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+ * @throws \Exception
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+ */
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+ protected function getConversion($unit)
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+ {
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+ if ( ! isset(static::$conversionChart[$unit]))
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+ {
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+ throw new \Exception(sprintf(
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+ 'No conversation between "%s" and "%s" is defined.',
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+ static::$native,
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+ $unit
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+ ));
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+ }
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+
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+ return static::$conversionChart[$unit];
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+ }
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+
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+
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+ /**
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+ * @param int $decimals
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+ * @param string $decPoint
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+ * @param string $thousandSep
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+ * @return string
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+ */
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+ public function format($decimals = 2, $decPoint = '.', $thousandSep = ',')
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+ {
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+ return number_format($this->value, $decimals, $decPoint, $thousandSep);
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+ }
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+
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+
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+ /**
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+ * @return string
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+ */
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+ public function __toString()
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+ {
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+ return $this->format();
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+ }
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+}
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Abhimanyu Sharma