开飞机的舒克 / Campus · 文件

转到一个项目
ConvertUOM.php 34.4 KB
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 
<?php

namespace PhpOffice\PhpSpreadsheet\Calculation\Engineering;

use PhpOffice\PhpSpreadsheet\Calculation\Exception;
use PhpOffice\PhpSpreadsheet\Calculation\Functions;

class ConvertUOM
{
    public const CATEGORY_WEIGHT_AND_MASS = 'Weight and Mass';
    public const CATEGORY_DISTANCE = 'Distance';
    public const CATEGORY_TIME = 'Time';
    public const CATEGORY_PRESSURE = 'Pressure';
    public const CATEGORY_FORCE = 'Force';
    public const CATEGORY_ENERGY = 'Energy';
    public const CATEGORY_POWER = 'Power';
    public const CATEGORY_MAGNETISM = 'Magnetism';
    public const CATEGORY_TEMPERATURE = 'Temperature';
    public const CATEGORY_VOLUME = 'Volume and Liquid Measure';
    public const CATEGORY_AREA = 'Area';
    public const CATEGORY_INFORMATION = 'Information';
    public const CATEGORY_SPEED = 'Speed';

    /**
     * Details of the Units of measure that can be used in CONVERTUOM().
     *
     * @var mixed[]
     */
    private static $conversionUnits = [
        // Weight and Mass
        'g' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'Gram', 'AllowPrefix' => true],
        'sg' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'Slug', 'AllowPrefix' => false],
        'lbm' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'Pound mass (avoirdupois)', 'AllowPrefix' => false],
        'u' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'U (atomic mass unit)', 'AllowPrefix' => true],
        'ozm' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'Ounce mass (avoirdupois)', 'AllowPrefix' => false],
        'grain' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'Grain', 'AllowPrefix' => false],
        'cwt' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'U.S. (short) hundredweight', 'AllowPrefix' => false],
        'shweight' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'U.S. (short) hundredweight', 'AllowPrefix' => false],
        'uk_cwt' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'Imperial hundredweight', 'AllowPrefix' => false],
        'lcwt' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'Imperial hundredweight', 'AllowPrefix' => false],
        'hweight' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'Imperial hundredweight', 'AllowPrefix' => false],
        'stone' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'Stone', 'AllowPrefix' => false],
        'ton' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'Ton', 'AllowPrefix' => false],
        'uk_ton' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'Imperial ton', 'AllowPrefix' => false],
        'LTON' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'Imperial ton', 'AllowPrefix' => false],
        'brton' => ['Group' => self::CATEGORY_WEIGHT_AND_MASS, 'Unit Name' => 'Imperial ton', 'AllowPrefix' => false],
        // Distance
        'm' => ['Group' => self::CATEGORY_DISTANCE, 'Unit Name' => 'Meter', 'AllowPrefix' => true],
        'mi' => ['Group' => self::CATEGORY_DISTANCE, 'Unit Name' => 'Statute mile', 'AllowPrefix' => false],
        'Nmi' => ['Group' => self::CATEGORY_DISTANCE, 'Unit Name' => 'Nautical mile', 'AllowPrefix' => false],
        'in' => ['Group' => self::CATEGORY_DISTANCE, 'Unit Name' => 'Inch', 'AllowPrefix' => false],
        'ft' => ['Group' => self::CATEGORY_DISTANCE, 'Unit Name' => 'Foot', 'AllowPrefix' => false],
        'yd' => ['Group' => self::CATEGORY_DISTANCE, 'Unit Name' => 'Yard', 'AllowPrefix' => false],
        'ang' => ['Group' => self::CATEGORY_DISTANCE, 'Unit Name' => 'Angstrom', 'AllowPrefix' => true],
        'ell' => ['Group' => self::CATEGORY_DISTANCE, 'Unit Name' => 'Ell', 'AllowPrefix' => false],
        'ly' => ['Group' => self::CATEGORY_DISTANCE, 'Unit Name' => 'Light Year', 'AllowPrefix' => false],
        'parsec' => ['Group' => self::CATEGORY_DISTANCE, 'Unit Name' => 'Parsec', 'AllowPrefix' => false],
        'pc' => ['Group' => self::CATEGORY_DISTANCE, 'Unit Name' => 'Parsec', 'AllowPrefix' => false],
        'Pica' => ['Group' => self::CATEGORY_DISTANCE, 'Unit Name' => 'Pica (1/72 in)', 'AllowPrefix' => false],
        'Picapt' => ['Group' => self::CATEGORY_DISTANCE, 'Unit Name' => 'Pica (1/72 in)', 'AllowPrefix' => false],
        'pica' => ['Group' => self::CATEGORY_DISTANCE, 'Unit Name' => 'Pica (1/6 in)', 'AllowPrefix' => false],
        'survey_mi' => ['Group' => self::CATEGORY_DISTANCE, 'Unit Name' => 'U.S survey mile (statute mile)', 'AllowPrefix' => false],
        // Time
        'yr' => ['Group' => self::CATEGORY_TIME, 'Unit Name' => 'Year', 'AllowPrefix' => false],
        'day' => ['Group' => self::CATEGORY_TIME, 'Unit Name' => 'Day', 'AllowPrefix' => false],
        'd' => ['Group' => self::CATEGORY_TIME, 'Unit Name' => 'Day', 'AllowPrefix' => false],
        'hr' => ['Group' => self::CATEGORY_TIME, 'Unit Name' => 'Hour', 'AllowPrefix' => false],
        'mn' => ['Group' => self::CATEGORY_TIME, 'Unit Name' => 'Minute', 'AllowPrefix' => false],
        'min' => ['Group' => self::CATEGORY_TIME, 'Unit Name' => 'Minute', 'AllowPrefix' => false],
        'sec' => ['Group' => self::CATEGORY_TIME, 'Unit Name' => 'Second', 'AllowPrefix' => true],
        's' => ['Group' => self::CATEGORY_TIME, 'Unit Name' => 'Second', 'AllowPrefix' => true],
        // Pressure
        'Pa' => ['Group' => self::CATEGORY_PRESSURE, 'Unit Name' => 'Pascal', 'AllowPrefix' => true],
        'p' => ['Group' => self::CATEGORY_PRESSURE, 'Unit Name' => 'Pascal', 'AllowPrefix' => true],
        'atm' => ['Group' => self::CATEGORY_PRESSURE, 'Unit Name' => 'Atmosphere', 'AllowPrefix' => true],
        'at' => ['Group' => self::CATEGORY_PRESSURE, 'Unit Name' => 'Atmosphere', 'AllowPrefix' => true],
        'mmHg' => ['Group' => self::CATEGORY_PRESSURE, 'Unit Name' => 'mm of Mercury', 'AllowPrefix' => true],
        'psi' => ['Group' => self::CATEGORY_PRESSURE, 'Unit Name' => 'PSI', 'AllowPrefix' => true],
        'Torr' => ['Group' => self::CATEGORY_PRESSURE, 'Unit Name' => 'Torr', 'AllowPrefix' => true],
        // Force
        'N' => ['Group' => self::CATEGORY_FORCE, 'Unit Name' => 'Newton', 'AllowPrefix' => true],
        'dyn' => ['Group' => self::CATEGORY_FORCE, 'Unit Name' => 'Dyne', 'AllowPrefix' => true],
        'dy' => ['Group' => self::CATEGORY_FORCE, 'Unit Name' => 'Dyne', 'AllowPrefix' => true],
        'lbf' => ['Group' => self::CATEGORY_FORCE, 'Unit Name' => 'Pound force', 'AllowPrefix' => false],
        'pond' => ['Group' => self::CATEGORY_FORCE, 'Unit Name' => 'Pond', 'AllowPrefix' => true],
        // Energy
        'J' => ['Group' => self::CATEGORY_ENERGY, 'Unit Name' => 'Joule', 'AllowPrefix' => true],
        'e' => ['Group' => self::CATEGORY_ENERGY, 'Unit Name' => 'Erg', 'AllowPrefix' => true],
        'c' => ['Group' => self::CATEGORY_ENERGY, 'Unit Name' => 'Thermodynamic calorie', 'AllowPrefix' => true],
        'cal' => ['Group' => self::CATEGORY_ENERGY, 'Unit Name' => 'IT calorie', 'AllowPrefix' => true],
        'eV' => ['Group' => self::CATEGORY_ENERGY, 'Unit Name' => 'Electron volt', 'AllowPrefix' => true],
        'ev' => ['Group' => self::CATEGORY_ENERGY, 'Unit Name' => 'Electron volt', 'AllowPrefix' => true],
        'HPh' => ['Group' => self::CATEGORY_ENERGY, 'Unit Name' => 'Horsepower-hour', 'AllowPrefix' => false],
        'hh' => ['Group' => self::CATEGORY_ENERGY, 'Unit Name' => 'Horsepower-hour', 'AllowPrefix' => false],
        'Wh' => ['Group' => self::CATEGORY_ENERGY, 'Unit Name' => 'Watt-hour', 'AllowPrefix' => true],
        'wh' => ['Group' => self::CATEGORY_ENERGY, 'Unit Name' => 'Watt-hour', 'AllowPrefix' => true],
        'flb' => ['Group' => self::CATEGORY_ENERGY, 'Unit Name' => 'Foot-pound', 'AllowPrefix' => false],
        'BTU' => ['Group' => self::CATEGORY_ENERGY, 'Unit Name' => 'BTU', 'AllowPrefix' => false],
        'btu' => ['Group' => self::CATEGORY_ENERGY, 'Unit Name' => 'BTU', 'AllowPrefix' => false],
        // Power
        'HP' => ['Group' => self::CATEGORY_POWER, 'Unit Name' => 'Horsepower', 'AllowPrefix' => false],
        'h' => ['Group' => self::CATEGORY_POWER, 'Unit Name' => 'Horsepower', 'AllowPrefix' => false],
        'W' => ['Group' => self::CATEGORY_POWER, 'Unit Name' => 'Watt', 'AllowPrefix' => true],
        'w' => ['Group' => self::CATEGORY_POWER, 'Unit Name' => 'Watt', 'AllowPrefix' => true],
        'PS' => ['Group' => self::CATEGORY_POWER, 'Unit Name' => 'Pferdestärke', 'AllowPrefix' => false],
        'T' => ['Group' => self::CATEGORY_MAGNETISM, 'Unit Name' => 'Tesla', 'AllowPrefix' => true],
        'ga' => ['Group' => self::CATEGORY_MAGNETISM, 'Unit Name' => 'Gauss', 'AllowPrefix' => true],
        // Temperature
        'C' => ['Group' => self::CATEGORY_TEMPERATURE, 'Unit Name' => 'Degrees Celsius', 'AllowPrefix' => false],
        'cel' => ['Group' => self::CATEGORY_TEMPERATURE, 'Unit Name' => 'Degrees Celsius', 'AllowPrefix' => false],
        'F' => ['Group' => self::CATEGORY_TEMPERATURE, 'Unit Name' => 'Degrees Fahrenheit', 'AllowPrefix' => false],
        'fah' => ['Group' => self::CATEGORY_TEMPERATURE, 'Unit Name' => 'Degrees Fahrenheit', 'AllowPrefix' => false],
        'K' => ['Group' => self::CATEGORY_TEMPERATURE, 'Unit Name' => 'Kelvin', 'AllowPrefix' => false],
        'kel' => ['Group' => self::CATEGORY_TEMPERATURE, 'Unit Name' => 'Kelvin', 'AllowPrefix' => false],
        'Rank' => ['Group' => self::CATEGORY_TEMPERATURE, 'Unit Name' => 'Degrees Rankine', 'AllowPrefix' => false],
        'Reau' => ['Group' => self::CATEGORY_TEMPERATURE, 'Unit Name' => 'Degrees Réaumur', 'AllowPrefix' => false],
        // Volume
        'l' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Litre', 'AllowPrefix' => true],
        'L' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Litre', 'AllowPrefix' => true],
        'lt' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Litre', 'AllowPrefix' => true],
        'tsp' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Teaspoon', 'AllowPrefix' => false],
        'tspm' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Modern Teaspoon', 'AllowPrefix' => false],
        'tbs' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Tablespoon', 'AllowPrefix' => false],
        'oz' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Fluid Ounce', 'AllowPrefix' => false],
        'cup' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cup', 'AllowPrefix' => false],
        'pt' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'U.S. Pint', 'AllowPrefix' => false],
        'us_pt' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'U.S. Pint', 'AllowPrefix' => false],
        'uk_pt' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'U.K. Pint', 'AllowPrefix' => false],
        'qt' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Quart', 'AllowPrefix' => false],
        'uk_qt' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Imperial Quart (UK)', 'AllowPrefix' => false],
        'gal' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Gallon', 'AllowPrefix' => false],
        'uk_gal' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Imperial Gallon (UK)', 'AllowPrefix' => false],
        'ang3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Angstrom', 'AllowPrefix' => true],
        'ang^3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Angstrom', 'AllowPrefix' => true],
        'barrel' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'US Oil Barrel', 'AllowPrefix' => false],
        'bushel' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'US Bushel', 'AllowPrefix' => false],
        'in3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Inch', 'AllowPrefix' => false],
        'in^3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Inch', 'AllowPrefix' => false],
        'ft3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Foot', 'AllowPrefix' => false],
        'ft^3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Foot', 'AllowPrefix' => false],
        'ly3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Light Year', 'AllowPrefix' => false],
        'ly^3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Light Year', 'AllowPrefix' => false],
        'm3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Meter', 'AllowPrefix' => true],
        'm^3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Meter', 'AllowPrefix' => true],
        'mi3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Mile', 'AllowPrefix' => false],
        'mi^3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Mile', 'AllowPrefix' => false],
        'yd3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Yard', 'AllowPrefix' => false],
        'yd^3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Yard', 'AllowPrefix' => false],
        'Nmi3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Nautical Mile', 'AllowPrefix' => false],
        'Nmi^3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Nautical Mile', 'AllowPrefix' => false],
        'Pica3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Pica', 'AllowPrefix' => false],
        'Pica^3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Pica', 'AllowPrefix' => false],
        'Picapt3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Pica', 'AllowPrefix' => false],
        'Picapt^3' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Cubic Pica', 'AllowPrefix' => false],
        'GRT' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Gross Registered Ton', 'AllowPrefix' => false],
        'regton' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Gross Registered Ton', 'AllowPrefix' => false],
        'MTON' => ['Group' => self::CATEGORY_VOLUME, 'Unit Name' => 'Measurement Ton (Freight Ton)', 'AllowPrefix' => false],
        // Area
        'ha' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Hectare', 'AllowPrefix' => true],
        'uk_acre' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'International Acre', 'AllowPrefix' => false],
        'us_acre' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'US Survey/Statute Acre', 'AllowPrefix' => false],
        'ang2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Angstrom', 'AllowPrefix' => true],
        'ang^2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Angstrom', 'AllowPrefix' => true],
        'ar' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Are', 'AllowPrefix' => true],
        'ft2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Feet', 'AllowPrefix' => false],
        'ft^2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Feet', 'AllowPrefix' => false],
        'in2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Inches', 'AllowPrefix' => false],
        'in^2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Inches', 'AllowPrefix' => false],
        'ly2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Light Years', 'AllowPrefix' => false],
        'ly^2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Light Years', 'AllowPrefix' => false],
        'm2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Meters', 'AllowPrefix' => true],
        'm^2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Meters', 'AllowPrefix' => true],
        'Morgen' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Morgen', 'AllowPrefix' => false],
        'mi2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Miles', 'AllowPrefix' => false],
        'mi^2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Miles', 'AllowPrefix' => false],
        'Nmi2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Nautical Miles', 'AllowPrefix' => false],
        'Nmi^2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Nautical Miles', 'AllowPrefix' => false],
        'Pica2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Pica', 'AllowPrefix' => false],
        'Pica^2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Pica', 'AllowPrefix' => false],
        'Picapt2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Pica', 'AllowPrefix' => false],
        'Picapt^2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Pica', 'AllowPrefix' => false],
        'yd2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Yards', 'AllowPrefix' => false],
        'yd^2' => ['Group' => self::CATEGORY_AREA, 'Unit Name' => 'Square Yards', 'AllowPrefix' => false],
        // Information
        'byte' => ['Group' => self::CATEGORY_INFORMATION, 'Unit Name' => 'Byte', 'AllowPrefix' => true],
        'bit' => ['Group' => self::CATEGORY_INFORMATION, 'Unit Name' => 'Bit', 'AllowPrefix' => true],
        // Speed
        'm/s' => ['Group' => self::CATEGORY_SPEED, 'Unit Name' => 'Meters per second', 'AllowPrefix' => true],
        'm/sec' => ['Group' => self::CATEGORY_SPEED, 'Unit Name' => 'Meters per second', 'AllowPrefix' => true],
        'm/h' => ['Group' => self::CATEGORY_SPEED, 'Unit Name' => 'Meters per hour', 'AllowPrefix' => true],
        'm/hr' => ['Group' => self::CATEGORY_SPEED, 'Unit Name' => 'Meters per hour', 'AllowPrefix' => true],
        'mph' => ['Group' => self::CATEGORY_SPEED, 'Unit Name' => 'Miles per hour', 'AllowPrefix' => false],
        'admkn' => ['Group' => self::CATEGORY_SPEED, 'Unit Name' => 'Admiralty Knot', 'AllowPrefix' => false],
        'kn' => ['Group' => self::CATEGORY_SPEED, 'Unit Name' => 'Knot', 'AllowPrefix' => false],
    ];

    /**
     * Details of the Multiplier prefixes that can be used with Units of Measure in CONVERTUOM().
     *
     * @var mixed[]
     */
    private static $conversionMultipliers = [
        'Y' => ['multiplier' => 1E24, 'name' => 'yotta'],
        'Z' => ['multiplier' => 1E21, 'name' => 'zetta'],
        'E' => ['multiplier' => 1E18, 'name' => 'exa'],
        'P' => ['multiplier' => 1E15, 'name' => 'peta'],
        'T' => ['multiplier' => 1E12, 'name' => 'tera'],
        'G' => ['multiplier' => 1E9, 'name' => 'giga'],
        'M' => ['multiplier' => 1E6, 'name' => 'mega'],
        'k' => ['multiplier' => 1E3, 'name' => 'kilo'],
        'h' => ['multiplier' => 1E2, 'name' => 'hecto'],
        'e' => ['multiplier' => 1E1, 'name' => 'dekao'],
        'da' => ['multiplier' => 1E1, 'name' => 'dekao'],
        'd' => ['multiplier' => 1E-1, 'name' => 'deci'],
        'c' => ['multiplier' => 1E-2, 'name' => 'centi'],
        'm' => ['multiplier' => 1E-3, 'name' => 'milli'],
        'u' => ['multiplier' => 1E-6, 'name' => 'micro'],
        'n' => ['multiplier' => 1E-9, 'name' => 'nano'],
        'p' => ['multiplier' => 1E-12, 'name' => 'pico'],
        'f' => ['multiplier' => 1E-15, 'name' => 'femto'],
        'a' => ['multiplier' => 1E-18, 'name' => 'atto'],
        'z' => ['multiplier' => 1E-21, 'name' => 'zepto'],
        'y' => ['multiplier' => 1E-24, 'name' => 'yocto'],
    ];

    /**
     * Details of the Multiplier prefixes that can be used with Units of Measure in CONVERTUOM().
     *
     * @var mixed[]
     */
    private static $binaryConversionMultipliers = [
        'Yi' => ['multiplier' => 2 ** 80, 'name' => 'yobi'],
        'Zi' => ['multiplier' => 2 ** 70, 'name' => 'zebi'],
        'Ei' => ['multiplier' => 2 ** 60, 'name' => 'exbi'],
        'Pi' => ['multiplier' => 2 ** 50, 'name' => 'pebi'],
        'Ti' => ['multiplier' => 2 ** 40, 'name' => 'tebi'],
        'Gi' => ['multiplier' => 2 ** 30, 'name' => 'gibi'],
        'Mi' => ['multiplier' => 2 ** 20, 'name' => 'mebi'],
        'ki' => ['multiplier' => 2 ** 10, 'name' => 'kibi'],
    ];

    /**
     * Details of the Units of measure conversion factors, organised by group.
     *
     * @var mixed[]
     */
    private static $unitConversions = [
        // Conversion uses gram (g) as an intermediate unit
        self::CATEGORY_WEIGHT_AND_MASS => [
            'g' => 1.0,
            'sg' => 6.85217658567918E-05,
            'lbm' => 2.20462262184878E-03,
            'u' => 6.02214179421676E+23,
            'ozm' => 3.52739619495804E-02,
            'grain' => 1.54323583529414E+01,
            'cwt' => 2.20462262184878E-05,
            'shweight' => 2.20462262184878E-05,
            'uk_cwt' => 1.96841305522212E-05,
            'lcwt' => 1.96841305522212E-05,
            'hweight' => 1.96841305522212E-05,
            'stone' => 1.57473044417770E-04,
            'ton' => 1.10231131092439E-06,
            'uk_ton' => 9.84206527611061E-07,
            'LTON' => 9.84206527611061E-07,
            'brton' => 9.84206527611061E-07,
        ],
        // Conversion uses meter (m) as an intermediate unit
        self::CATEGORY_DISTANCE => [
            'm' => 1.0,
            'mi' => 6.21371192237334E-04,
            'Nmi' => 5.39956803455724E-04,
            'in' => 3.93700787401575E+01,
            'ft' => 3.28083989501312E+00,
            'yd' => 1.09361329833771E+00,
            'ang' => 1.0E+10,
            'ell' => 8.74890638670166E-01,
            'ly' => 1.05700083402462E-16,
            'parsec' => 3.24077928966473E-17,
            'pc' => 3.24077928966473E-17,
            'Pica' => 2.83464566929134E+03,
            'Picapt' => 2.83464566929134E+03,
            'pica' => 2.36220472440945E+02,
            'survey_mi' => 6.21369949494950E-04,
        ],
        // Conversion uses second (s) as an intermediate unit
        self::CATEGORY_TIME => [
            'yr' => 3.16880878140289E-08,
            'day' => 1.15740740740741E-05,
            'd' => 1.15740740740741E-05,
            'hr' => 2.77777777777778E-04,
            'mn' => 1.66666666666667E-02,
            'min' => 1.66666666666667E-02,
            'sec' => 1.0,
            's' => 1.0,
        ],
        // Conversion uses Pascal (Pa) as an intermediate unit
        self::CATEGORY_PRESSURE => [
            'Pa' => 1.0,
            'p' => 1.0,
            'atm' => 9.86923266716013E-06,
            'at' => 9.86923266716013E-06,
            'mmHg' => 7.50063755419211E-03,
            'psi' => 1.45037737730209E-04,
            'Torr' => 7.50061682704170E-03,
        ],
        // Conversion uses Newton (N) as an intermediate unit
        self::CATEGORY_FORCE => [
            'N' => 1.0,
            'dyn' => 1.0E+5,
            'dy' => 1.0E+5,
            'lbf' => 2.24808923655339E-01,
            'pond' => 1.01971621297793E+02,
        ],
        // Conversion uses Joule (J) as an intermediate unit
        self::CATEGORY_ENERGY => [
            'J' => 1.0,
            'e' => 9.99999519343231E+06,
            'c' => 2.39006249473467E-01,
            'cal' => 2.38846190642017E-01,
            'eV' => 6.24145700000000E+18,
            'ev' => 6.24145700000000E+18,
            'HPh' => 3.72506430801000E-07,
            'hh' => 3.72506430801000E-07,
            'Wh' => 2.77777916238711E-04,
            'wh' => 2.77777916238711E-04,
            'flb' => 2.37304222192651E+01,
            'BTU' => 9.47815067349015E-04,
            'btu' => 9.47815067349015E-04,
        ],
        // Conversion uses Horsepower (HP) as an intermediate unit
        self::CATEGORY_POWER => [
            'HP' => 1.0,
            'h' => 1.0,
            'W' => 7.45699871582270E+02,
            'w' => 7.45699871582270E+02,
            'PS' => 1.01386966542400E+00,
        ],
        // Conversion uses Tesla (T) as an intermediate unit
        self::CATEGORY_MAGNETISM => [
            'T' => 1.0,
            'ga' => 10000.0,
        ],
        // Conversion uses litre (l) as an intermediate unit
        self::CATEGORY_VOLUME => [
            'l' => 1.0,
            'L' => 1.0,
            'lt' => 1.0,
            'tsp' => 2.02884136211058E+02,
            'tspm' => 2.0E+02,
            'tbs' => 6.76280454036860E+01,
            'oz' => 3.38140227018430E+01,
            'cup' => 4.22675283773038E+00,
            'pt' => 2.11337641886519E+00,
            'us_pt' => 2.11337641886519E+00,
            'uk_pt' => 1.75975398639270E+00,
            'qt' => 1.05668820943259E+00,
            'uk_qt' => 8.79876993196351E-01,
            'gal' => 2.64172052358148E-01,
            'uk_gal' => 2.19969248299088E-01,
            'ang3' => 1.0E+27,
            'ang^3' => 1.0E+27,
            'barrel' => 6.28981077043211E-03,
            'bushel' => 2.83775932584017E-02,
            'in3' => 6.10237440947323E+01,
            'in^3' => 6.10237440947323E+01,
            'ft3' => 3.53146667214886E-02,
            'ft^3' => 3.53146667214886E-02,
            'ly3' => 1.18093498844171E-51,
            'ly^3' => 1.18093498844171E-51,
            'm3' => 1.0E-03,
            'm^3' => 1.0E-03,
            'mi3' => 2.39912758578928E-13,
            'mi^3' => 2.39912758578928E-13,
            'yd3' => 1.30795061931439E-03,
            'yd^3' => 1.30795061931439E-03,
            'Nmi3' => 1.57426214685811E-13,
            'Nmi^3' => 1.57426214685811E-13,
            'Pica3' => 2.27769904358706E+07,
            'Pica^3' => 2.27769904358706E+07,
            'Picapt3' => 2.27769904358706E+07,
            'Picapt^3' => 2.27769904358706E+07,
            'GRT' => 3.53146667214886E-04,
            'regton' => 3.53146667214886E-04,
            'MTON' => 8.82866668037215E-04,
        ],
        // Conversion uses hectare (ha) as an intermediate unit
        self::CATEGORY_AREA => [
            'ha' => 1.0,
            'uk_acre' => 2.47105381467165E+00,
            'us_acre' => 2.47104393046628E+00,
            'ang2' => 1.0E+24,
            'ang^2' => 1.0E+24,
            'ar' => 1.0E+02,
            'ft2' => 1.07639104167097E+05,
            'ft^2' => 1.07639104167097E+05,
            'in2' => 1.55000310000620E+07,
            'in^2' => 1.55000310000620E+07,
            'ly2' => 1.11725076312873E-28,
            'ly^2' => 1.11725076312873E-28,
            'm2' => 1.0E+04,
            'm^2' => 1.0E+04,
            'Morgen' => 4.0E+00,
            'mi2' => 3.86102158542446E-03,
            'mi^2' => 3.86102158542446E-03,
            'Nmi2' => 2.91553349598123E-03,
            'Nmi^2' => 2.91553349598123E-03,
            'Pica2' => 8.03521607043214E+10,
            'Pica^2' => 8.03521607043214E+10,
            'Picapt2' => 8.03521607043214E+10,
            'Picapt^2' => 8.03521607043214E+10,
            'yd2' => 1.19599004630108E+04,
            'yd^2' => 1.19599004630108E+04,
        ],
        // Conversion uses bit (bit) as an intermediate unit
        self::CATEGORY_INFORMATION => [
            'bit' => 1.0,
            'byte' => 0.125,
        ],
        // Conversion uses Meters per Second (m/s) as an intermediate unit
        self::CATEGORY_SPEED => [
            'm/s' => 1.0,
            'm/sec' => 1.0,
            'm/h' => 3.60E+03,
            'm/hr' => 3.60E+03,
            'mph' => 2.23693629205440E+00,
            'admkn' => 1.94260256941567E+00,
            'kn' => 1.94384449244060E+00,
        ],
    ];

    /**
     *    getConversionGroups
     * Returns a list of the different conversion groups for UOM conversions.
     *
     * @return array
     */
    public static function getConversionCategories()
    {
        $conversionGroups = [];
        foreach (self::$conversionUnits as $conversionUnit) {
            $conversionGroups[] = $conversionUnit['Group'];
        }

        return array_merge(array_unique($conversionGroups));
    }

    /**
     *    getConversionGroupUnits
     * Returns an array of units of measure, for a specified conversion group, or for all groups.
     *
     * @param string $category The group whose units of measure you want to retrieve
     *
     * @return array
     */
    public static function getConversionCategoryUnits($category = null)
    {
        $conversionGroups = [];
        foreach (self::$conversionUnits as $conversionUnit => $conversionGroup) {
            if (($category === null) || ($conversionGroup['Group'] == $category)) {
                $conversionGroups[$conversionGroup['Group']][] = $conversionUnit;
            }
        }

        return $conversionGroups;
    }

    /**
     * getConversionGroupUnitDetails.
     *
     * @param string $category The group whose units of measure you want to retrieve
     *
     * @return array
     */
    public static function getConversionCategoryUnitDetails($category = null)
    {
        $conversionGroups = [];
        foreach (self::$conversionUnits as $conversionUnit => $conversionGroup) {
            if (($category === null) || ($conversionGroup['Group'] == $category)) {
                $conversionGroups[$conversionGroup['Group']][] = [
                    'unit' => $conversionUnit,
                    'description' => $conversionGroup['Unit Name'],
                ];
            }
        }

        return $conversionGroups;
    }

    /**
     *    getConversionMultipliers
     * Returns an array of the Multiplier prefixes that can be used with Units of Measure in CONVERTUOM().
     *
     * @return mixed[]
     */
    public static function getConversionMultipliers()
    {
        return self::$conversionMultipliers;
    }

    /**
     *    getBinaryConversionMultipliers
     * Returns an array of the additional Multiplier prefixes that can be used with Information Units of Measure in CONVERTUOM().
     *
     * @return mixed[]
     */
    public static function getBinaryConversionMultipliers()
    {
        return self::$binaryConversionMultipliers;
    }

    /**
     * CONVERT.
     *
     * Converts a number from one measurement system to another.
     *    For example, CONVERT can translate a table of distances in miles to a table of distances
     * in kilometers.
     *
     *    Excel Function:
     *        CONVERT(value,fromUOM,toUOM)
     *
     * @param float|int $value the value in fromUOM to convert
     * @param string $fromUOM the units for value
     * @param string $toUOM the units for the result
     *
     * @return float|string
     */
    public static function CONVERT($value, $fromUOM, $toUOM)
    {
        $value = Functions::flattenSingleValue($value);
        $fromUOM = Functions::flattenSingleValue($fromUOM);
        $toUOM = Functions::flattenSingleValue($toUOM);

        if (!is_numeric($value)) {
            return Functions::VALUE();
        }

        try {
            [$fromUOM, $fromCategory, $fromMultiplier] = self::getUOMDetails($fromUOM);
            [$toUOM, $toCategory, $toMultiplier] = self::getUOMDetails($toUOM);
        } catch (Exception $e) {
            return Functions::NA();
        }

        if ($fromCategory !== $toCategory) {
            return Functions::NA();
        }

        $value *= $fromMultiplier;

        if (($fromUOM === $toUOM) && ($fromMultiplier === $toMultiplier)) {
            //    We've already factored $fromMultiplier into the value, so we need
            //        to reverse it again
            return $value / $fromMultiplier;
        } elseif ($fromUOM === $toUOM) {
            return $value / $toMultiplier;
        } elseif ($fromCategory === self::CATEGORY_TEMPERATURE) {
            return self::convertTemperature($fromUOM, $toUOM, $value);
        }

        $baseValue = $value * (1.0 / self::$unitConversions[$fromCategory][$fromUOM]);

        return ($baseValue * self::$unitConversions[$fromCategory][$toUOM]) / $toMultiplier;
    }

    private static function getUOMDetails(string $uom)
    {
        if (isset(self::$conversionUnits[$uom])) {
            $unitCategory = self::$conversionUnits[$uom]['Group'];

            return [$uom, $unitCategory, 1.0];
        }

        // Check 1-character standard metric multiplier prefixes
        $multiplierType = substr($uom, 0, 1);
        $uom = substr($uom, 1);
        if (isset(self::$conversionUnits[$uom], self::$conversionMultipliers[$multiplierType])) {
            if (self::$conversionUnits[$uom]['AllowPrefix'] === false) {
                throw new Exception('Prefix not allowed for UoM');
            }
            $unitCategory = self::$conversionUnits[$uom]['Group'];

            return [$uom, $unitCategory, self::$conversionMultipliers[$multiplierType]['multiplier']];
        }

        $multiplierType .= substr($uom, 0, 1);
        $uom = substr($uom, 1);

        // Check 2-character standard metric multiplier prefixes
        if (isset(self::$conversionUnits[$uom], self::$conversionMultipliers[$multiplierType])) {
            if (self::$conversionUnits[$uom]['AllowPrefix'] === false) {
                throw new Exception('Prefix not allowed for UoM');
            }
            $unitCategory = self::$conversionUnits[$uom]['Group'];

            return [$uom, $unitCategory, self::$conversionMultipliers[$multiplierType]['multiplier']];
        }

        // Check 2-character binary multiplier prefixes
        if (isset(self::$conversionUnits[$uom], self::$binaryConversionMultipliers[$multiplierType])) {
            if (self::$conversionUnits[$uom]['AllowPrefix'] === false) {
                throw new Exception('Prefix not allowed for UoM');
            }
            $unitCategory = self::$conversionUnits[$uom]['Group'];
            if ($unitCategory !== 'Information') {
                throw new Exception('Binary Prefix is only allowed for Information UoM');
            }

            return [$uom, $unitCategory, self::$binaryConversionMultipliers[$multiplierType]['multiplier']];
        }

        throw new Exception('UoM Not Found');
    }

    /**
     * @param float|int $value
     *
     * @return float|int
     */
    protected static function convertTemperature(string $fromUOM, string $toUOM, $value)
    {
        $fromUOM = self::resolveTemperatureSynonyms($fromUOM);
        $toUOM = self::resolveTemperatureSynonyms($toUOM);

        if ($fromUOM === $toUOM) {
            return $value;
        }

        // Convert to Kelvin
        switch ($fromUOM) {
            case 'F':
                $value = ($value - 32) / 1.8 + 273.15;

                break;
            case 'C':
                $value += 273.15;

                break;
            case 'Rank':
                $value /= 1.8;

                break;
            case 'Reau':
                $value = $value * 1.25 + 273.15;

                break;
        }

        // Convert from Kelvin
        switch ($toUOM) {
            case 'F':
                $value = ($value - 273.15) * 1.8 + 32.00;

                break;
            case 'C':
                $value -= 273.15;

                break;
            case 'Rank':
                $value *= 1.8;

                break;
            case 'Reau':
                $value = ($value - 273.15) * 0.80000;

                break;
        }

        return $value;
    }

    private static function resolveTemperatureSynonyms(string $uom)
    {
        switch ($uom) {
            case 'fah':
                return 'F';
            case 'cel':
                return 'C';
            case 'kel':
                return 'K';
        }

        return $uom;
    }
}