creditcard.php
717 lines
| 1 | <?php |
| 2 | /** |
| 3 | * @package VikAppointments |
| 4 | * @subpackage core |
| 5 | * @author E4J s.r.l. |
| 6 | * @copyright Copyright (C) 2021 E4J s.r.l. All Rights Reserved. |
| 7 | * @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL |
| 8 | * @link https://vikwp.com |
| 9 | */ |
| 10 | |
| 11 | // No direct access |
| 12 | defined('ABSPATH') or die('No script kiddies please!'); |
| 13 | |
| 14 | /** |
| 15 | * This class is used to handle and dispatch the proper credit card brand. |
| 16 | * It is helpful to use this class for seamless payment gateways. |
| 17 | * |
| 18 | * Usage: |
| 19 | * $card_number = '4242424242424242'; // VISA |
| 20 | * $cc = CreditCard::getInstance($card_number); |
| 21 | * echo $cc->formatCardNumber(); |
| 22 | * |
| 23 | * @since 1.6 |
| 24 | */ |
| 25 | abstract class CreditCard |
| 26 | { |
| 27 | /** |
| 28 | * The number of the credit card. |
| 29 | * |
| 30 | * @var string |
| 31 | */ |
| 32 | private $card_number = ''; |
| 33 | |
| 34 | /** |
| 35 | * The CVC, CVV or CV2 of the credit card. |
| 36 | * |
| 37 | * @var string |
| 38 | */ |
| 39 | private $cvc = '0'; |
| 40 | |
| 41 | /** |
| 42 | * The expiring month of the credit card (1-12). |
| 43 | * |
| 44 | * @var integer |
| 45 | */ |
| 46 | private $exp_month = 0; |
| 47 | |
| 48 | /** |
| 49 | * The expiring year of the credit card. |
| 50 | * |
| 51 | * @var integer |
| 52 | */ |
| 53 | private $exp_year = 0; |
| 54 | |
| 55 | /** |
| 56 | * The cardholder name. |
| 57 | * |
| 58 | * @var string |
| 59 | */ |
| 60 | private $card_holder = ''; |
| 61 | |
| 62 | /** |
| 63 | * Class constructor. |
| 64 | * |
| 65 | * @param string $card_number The card number. |
| 66 | * @param string $cvc The CVC, CVV or CV2. |
| 67 | * @param integer $month The expiring month. |
| 68 | * @param integer $year The expiring year. |
| 69 | * @param string $card_holder The cardholder name. |
| 70 | * |
| 71 | * @uses setCardNumber() |
| 72 | * @uses setCvc() |
| 73 | * @uses setExpiryDate() |
| 74 | * @uses setCardholderName() |
| 75 | */ |
| 76 | public function __construct($card_number, $cvc = '0', $month = 0, $year = 0, $card_holder = '') |
| 77 | { |
| 78 | $this->setCardNumber($card_number) |
| 79 | ->setCvc($cvc) |
| 80 | ->setExpiryDate($month, $year) |
| 81 | ->setCardholderName($card_holder); |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * Sets the credit card number. |
| 86 | * Any character that it is not a digit will be ignored. |
| 87 | * |
| 88 | * @param string $card_number The card number. |
| 89 | * |
| 90 | * @return self This object to support chaining. |
| 91 | */ |
| 92 | public function setCardNumber($card_number) |
| 93 | { |
| 94 | $this->card_number = preg_replace('/\D/', '', $card_number); |
| 95 | |
| 96 | return $this; |
| 97 | } |
| 98 | |
| 99 | /** |
| 100 | * Gets the credit card number. |
| 101 | * |
| 102 | * @return string The card number. |
| 103 | */ |
| 104 | public function getCardNumber() |
| 105 | { |
| 106 | return $this->card_number; |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * Sets the credit card CVC, CVV or CV2. |
| 111 | * Any character that it is not a digit will be ignored. |
| 112 | * |
| 113 | * @param string $cvc The CVC, CVV or CV2. |
| 114 | * |
| 115 | * @return self This object to support chaining. |
| 116 | */ |
| 117 | public function setCvc($cvc) |
| 118 | { |
| 119 | $this->cvc = preg_replace('/\D/', '', $cvc); |
| 120 | |
| 121 | return $this; |
| 122 | } |
| 123 | |
| 124 | /** |
| 125 | * Gets the credit card CVC, CVV or CV2. |
| 126 | * |
| 127 | * @return string The card CVC, CVV or CV2. |
| 128 | */ |
| 129 | public function getCvc() |
| 130 | { |
| 131 | return $this->cvc; |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Sets the credit card expiring month. |
| 136 | * |
| 137 | * @param integer $month The expiring month (1-12). |
| 138 | * |
| 139 | * @return self This object to support chaining. |
| 140 | */ |
| 141 | public function setExpiryMonth($month) |
| 142 | { |
| 143 | $month = intval($month); |
| 144 | |
| 145 | if ($month >= 1 && $month <= 12) |
| 146 | { |
| 147 | $this->exp_month = $month; |
| 148 | } |
| 149 | |
| 150 | return $this; |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Gets the expiring month. |
| 155 | * |
| 156 | * @return integer The expiring month. |
| 157 | */ |
| 158 | public function getExpiryMonth() |
| 159 | { |
| 160 | return $this->exp_month; |
| 161 | } |
| 162 | |
| 163 | /** |
| 164 | * Sets the credit card expiring year. |
| 165 | * |
| 166 | * @param integer $year The expiring year with 2 or 4 digits (e.g. 16 or 2016). |
| 167 | * |
| 168 | * @return self This object to support chaining. |
| 169 | */ |
| 170 | public function setExpiryYear($year) |
| 171 | { |
| 172 | $year = intval($year); |
| 173 | |
| 174 | if ($year < 1000) |
| 175 | { |
| 176 | $now = getdate(); |
| 177 | $year = intval(substr($now['year'], 0, 2) . $year); |
| 178 | } |
| 179 | |
| 180 | $this->exp_year = $year; |
| 181 | |
| 182 | return $this; |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * Gets the expiring year. |
| 187 | * |
| 188 | * @return integer The expiring year. |
| 189 | */ |
| 190 | public function getExpiryYear() |
| 191 | { |
| 192 | return $this->exp_year; |
| 193 | } |
| 194 | |
| 195 | /** |
| 196 | * Sets the credit card expiring date: month and year. |
| 197 | * |
| 198 | * @param integer $month The expiring month (1-12). |
| 199 | * @param integer $year The expiring year with 2 or 4 digits (e.g. 16 or 2016). |
| 200 | * |
| 201 | * @return self This object to support chaining. |
| 202 | * |
| 203 | * @uses setExpiryMonth() |
| 204 | * @uses setExpiryYear() |
| 205 | */ |
| 206 | public function setExpiryDate($month, $year) |
| 207 | { |
| 208 | return $this->setExpiryMonth($month)->setExpiryYear($year); |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Gets the expiring date with the given format. |
| 213 | * |
| 214 | * @param string $format The date format. |
| 215 | * |
| 216 | * @return string The expiring date. |
| 217 | */ |
| 218 | public function getExpiryDate($format = 'm/y') |
| 219 | { |
| 220 | $date = getdate(mktime(0, 0, 0, $this->exp_month, 1, $this->exp_year)); |
| 221 | |
| 222 | $last_mday = 31; |
| 223 | if (in_array($date['mon'], array(4, 6, 9, 11))) |
| 224 | { |
| 225 | $last_mday = 30; |
| 226 | } |
| 227 | else if ($date['mon'] == 2) |
| 228 | { |
| 229 | $last_mday = 28; |
| 230 | } |
| 231 | |
| 232 | return date($format, mktime(23, 59, 59, $date['mon'], $last_mday, $date['year'])); |
| 233 | } |
| 234 | |
| 235 | /** |
| 236 | * Sets the cardholder name. |
| 237 | * |
| 238 | * @param string $card_holder The cardholder name. |
| 239 | * |
| 240 | * @return self This object to support chaining. |
| 241 | */ |
| 242 | public function setCardholderName($card_holder) |
| 243 | { |
| 244 | $this->card_holder = trim($card_holder); |
| 245 | |
| 246 | return $this; |
| 247 | } |
| 248 | |
| 249 | /** |
| 250 | * Gets the cardholder name. |
| 251 | * |
| 252 | * @return string The cardholder name. |
| 253 | */ |
| 254 | public function getCardholderName() |
| 255 | { |
| 256 | return $this->card_holder; |
| 257 | } |
| 258 | |
| 259 | /** |
| 260 | * Checks if the credit card number is valid. |
| 261 | * The card number validation depends on the brand of the credit card. |
| 262 | * |
| 263 | * @return boolean True if the card number is valid. |
| 264 | */ |
| 265 | abstract public function isCardNumberValid(); |
| 266 | |
| 267 | /** |
| 268 | * Checks if the CVC is valid. |
| 269 | * The CVC is valid if it is a number in the range [001 - 9999] |
| 270 | * |
| 271 | * @return boolean True if the CVC is valid, otherwise false. |
| 272 | */ |
| 273 | public function isCardCvcValid() |
| 274 | { |
| 275 | return ($len = strlen($this->cvc)) >= 3 && $len <= 4; |
| 276 | } |
| 277 | |
| 278 | /** |
| 279 | * Checks if the credit card is expired. |
| 280 | * |
| 281 | * @return boolean True if the expiring date is in the past, otherwise false. |
| 282 | * |
| 283 | * @uses getExpiryDate() |
| 284 | */ |
| 285 | public function isExpired() |
| 286 | { |
| 287 | $exp = strtotime($this->getExpiryDate('Y-m-d')); |
| 288 | |
| 289 | return $exp < time(); |
| 290 | } |
| 291 | |
| 292 | /** |
| 293 | * Checks if the cardholder name is valid. |
| 294 | * The cardholder name is valid only if it has more than 2 characters |
| 295 | * and at least one of them is a white space (e.g John Smith). |
| 296 | * It is needed to have at least 3 chars and 1 space to receive a First name |
| 297 | * and a last name. |
| 298 | * |
| 299 | * It is not possible to have a white space at the beginning or at the end |
| 300 | * because the cardholder name is trimmed by the setter. |
| 301 | * |
| 302 | * @return boolean True if the cardholder name is valid, otherwise false. |
| 303 | */ |
| 304 | public function isCardholderValid() |
| 305 | { |
| 306 | return strlen($this->card_holder) > 2 && strpos($this->card_holder, ' ') !== false; |
| 307 | } |
| 308 | |
| 309 | /** |
| 310 | * Checks approximately if the credit card can be charged. |
| 311 | * A credit card can be charged only if all the conditions below are satisfied: |
| 312 | * - credit card number is valid |
| 313 | * - cvc is valid |
| 314 | * - expiring date is not in the past |
| 315 | * - cardholder name is valid |
| 316 | * |
| 317 | * @return boolean True if the credit card is chargable, otherwise false. |
| 318 | * |
| 319 | * @uses isCardNumberValid() |
| 320 | * @uses isCardCvcValid() |
| 321 | * @uses isExpired() |
| 322 | * @uses isCardholderValid() |
| 323 | */ |
| 324 | public function isChargeable() |
| 325 | { |
| 326 | return ($this->isCardNumberValid() |
| 327 | && $this->isCardCvcValid() |
| 328 | && !$this->isExpired() |
| 329 | && $this->isCardholderValid()); |
| 330 | } |
| 331 | |
| 332 | /** |
| 333 | * Gets the credit card number digits count. |
| 334 | * |
| 335 | * @return integer The digits count of the credit card number. |
| 336 | */ |
| 337 | abstract public function getCardNumberDigits(); |
| 338 | |
| 339 | /** |
| 340 | * Formats the credit card number to be more human-readable. |
| 341 | * |
| 342 | * @return string The formatted card number. |
| 343 | */ |
| 344 | abstract public function formatCardNumber(); |
| 345 | |
| 346 | /** |
| 347 | * Gets a masked version of the credit card for privacy. |
| 348 | * |
| 349 | * @return array A list containing 2 different masked versions of card number. |
| 350 | */ |
| 351 | abstract public function getMaskedCardNumber(); |
| 352 | |
| 353 | /** |
| 354 | * Gets the alias of the credit card brand. |
| 355 | * The alias should be equal to the filename of the brand class. |
| 356 | * |
| 357 | * @return string The alias of the credit card brand. |
| 358 | */ |
| 359 | abstract public function getBrandAlias(); |
| 360 | |
| 361 | /** |
| 362 | * Gets the name of the credit card brand. |
| 363 | * |
| 364 | * @return string The name of the credit card brand. |
| 365 | */ |
| 366 | abstract public function getBrandName(); |
| 367 | |
| 368 | /** |
| 369 | * Instantiates a new credit card brand class depending on the specified card number. |
| 370 | * Returns NULL in case the method is not able to recognize the brand. |
| 371 | * |
| 372 | * @param string $card_number The card number. |
| 373 | * @param string $cvc The CVC, CVV or CV2. |
| 374 | * @param integer $month The expiring month. |
| 375 | * @param integer $year The expiring year. |
| 376 | * @param string $card_holder The cardholder name. |
| 377 | * |
| 378 | * @return mixed The proper CC brand handler, or NULL. |
| 379 | * |
| 380 | * @uses load() |
| 381 | * @uses isVisa() |
| 382 | * @uses isMsterCard() |
| 383 | * @uses isAmericanExpress() |
| 384 | * @uses isDinersClub() |
| 385 | * @uses isDiscover() |
| 386 | * @uses isJcb() |
| 387 | */ |
| 388 | public static function getBrand($card_number, $cvc = '0', $month = 0, $year = 0, $card_holder = '') |
| 389 | { |
| 390 | if (CreditCard::isVisa($card_number)) |
| 391 | { |
| 392 | if (CreditCard::load(CreditCard::VISA)) |
| 393 | { |
| 394 | return new CCVisa($card_number, $cvc, $month, $year, $card_holder); |
| 395 | } |
| 396 | } |
| 397 | else if (CreditCard::isMasterCard($card_number)) |
| 398 | { |
| 399 | if (CreditCard::load(CreditCard::MASTER_CARD)) |
| 400 | { |
| 401 | return new CCMasterCard($card_number, $cvc, $month, $year, $card_holder); |
| 402 | } |
| 403 | } |
| 404 | else if (CreditCard::isAmericanExpress($card_number)) |
| 405 | { |
| 406 | if (CreditCard::load(CreditCard::AMERICAN_EXPRESS)) |
| 407 | { |
| 408 | return new CCAmericanExpress($card_number, $cvc, $month, $year, $card_holder); |
| 409 | } |
| 410 | } |
| 411 | else if (CreditCard::isDinersClub($card_number)) |
| 412 | { |
| 413 | if (CreditCard::load(CreditCard::DINERS_CLUB)) |
| 414 | { |
| 415 | return new CCDinersClub($card_number, $cvc, $month, $year, $card_holder); |
| 416 | } |
| 417 | } |
| 418 | else if (CreditCard::isDiscover($card_number)) |
| 419 | { |
| 420 | if (CreditCard::load(CreditCard::DISCOVER)) |
| 421 | { |
| 422 | return new CCDiscover($card_number, $cvc, $month, $year, $card_holder); |
| 423 | } |
| 424 | } |
| 425 | else if (CreditCard::isJcb($card_number)) |
| 426 | { |
| 427 | if (CreditCard::load(CreditCard::JCB)) |
| 428 | { |
| 429 | return new CCJcb($card_number, $cvc, $month, $year, $card_holder); |
| 430 | } |
| 431 | } |
| 432 | |
| 433 | return null; |
| 434 | } |
| 435 | |
| 436 | /** |
| 437 | * Checks if the card number matches a Visa. |
| 438 | * |
| 439 | * How to identify VISA: |
| 440 | * A credit card is a VISA when the card number starts with 4. |
| 441 | * |
| 442 | * e.g. 4242 0000 000 0000 |
| 443 | * |
| 444 | * @param string $card_number The card number. |
| 445 | * |
| 446 | * @return boolean True if the card number is a Visa, otherwise false. |
| 447 | * |
| 448 | * @uses matchBrandRanges() |
| 449 | */ |
| 450 | public static function isVisa($card_number) |
| 451 | { |
| 452 | $card_number = preg_replace('/\D/', '', $card_number); |
| 453 | |
| 454 | // starts with 4 |
| 455 | $ranges = array( |
| 456 | array(4), |
| 457 | ); |
| 458 | |
| 459 | return self::matchBrandRanges($card_number, $ranges); |
| 460 | } |
| 461 | |
| 462 | /** |
| 463 | * Checks if the card number matches a MasterCard. |
| 464 | * |
| 465 | * How to identify MasterCard: |
| 466 | * A credit card is a MasterCard when the first 2 digits are in the range [51 - 55] |
| 467 | * or the first four digits are in the range [2221 - 2720]. |
| 468 | * |
| 469 | * e.g. 5353 0000 0000 0000 |
| 470 | * e.g. 2323 0000 0000 0000 |
| 471 | * |
| 472 | * @param string $card_number The card number. |
| 473 | * |
| 474 | * @return boolean True if the card number is a MasterCard, otherwise false. |
| 475 | * |
| 476 | * @uses matchBrandRanges() |
| 477 | */ |
| 478 | public static function isMasterCard($card_number) |
| 479 | { |
| 480 | $card_number = preg_replace('/\D/', '', $card_number); |
| 481 | |
| 482 | // from 51 to 55 (included) or 2221 to 2720 (included) |
| 483 | $ranges = array( |
| 484 | array(51, 55), |
| 485 | array(2221, 2720), |
| 486 | ); |
| 487 | |
| 488 | return self::matchBrandRanges($card_number, $ranges); |
| 489 | } |
| 490 | |
| 491 | /** |
| 492 | * Checks if the card number matches an American Express. |
| 493 | * |
| 494 | * How to identify American Express: |
| 495 | * A credit card is an American Express when the first 2 digits are 34 or 37. |
| 496 | * |
| 497 | * e.g. 3434 000000 00000 |
| 498 | * e.g. 3737 000000 00000 |
| 499 | * |
| 500 | * @param string $card_number The card number. |
| 501 | * |
| 502 | * @return boolean True if the card number is an American Express, otherwise false. |
| 503 | * |
| 504 | * @uses matchBrandRanges() |
| 505 | */ |
| 506 | public static function isAmericanExpress($card_number) |
| 507 | { |
| 508 | $card_number = preg_replace('/\D/', '', $card_number); |
| 509 | |
| 510 | // 34 or 37 |
| 511 | $ranges = array( |
| 512 | array(34), |
| 513 | array(37), |
| 514 | ); |
| 515 | |
| 516 | return self::matchBrandRanges($card_number, $ranges); |
| 517 | } |
| 518 | |
| 519 | /** |
| 520 | * Check if the card number matches a Diners Club. |
| 521 | * @usedby CreditCard::getBrand() |
| 522 | * |
| 523 | * How to identify Diners Club: |
| 524 | * A credit card is a Diners Club when the first 3 digits are in the range [300 - 305] or 309 |
| 525 | * or the first 2 digits are 36 or in the range [38 - 39]. |
| 526 | * |
| 527 | * e.g. 3636 0000 0000 0000 |
| 528 | * e.g. 3838 0000 0000 0000 |
| 529 | * e.g. 3010 0000 0000 0000 |
| 530 | * |
| 531 | * @param string $card_number The card number. |
| 532 | * |
| 533 | * @return boolean True if the card number is a Diners Club, otherwise false. |
| 534 | * |
| 535 | * @uses matchBrandRanges() Verify matches of this brand. |
| 536 | */ |
| 537 | public static function isDinersClub($card_number) |
| 538 | { |
| 539 | $card_number = preg_replace('/\D/', '', $card_number); |
| 540 | |
| 541 | // from 300 to 305 (included) or 309 or 36 or from 38 to 39 (included) |
| 542 | $ranges = array( |
| 543 | array(300, 305), |
| 544 | array(309), |
| 545 | array(36), |
| 546 | array(38, 39) |
| 547 | ); |
| 548 | |
| 549 | return self::matchBrandRanges($card_number, $ranges); |
| 550 | } |
| 551 | |
| 552 | /** |
| 553 | * Check if the card number matches a Discover. |
| 554 | * @usedby CreditCard::getBrand() |
| 555 | * |
| 556 | * How to identify Discover: |
| 557 | * A credit card is a Discover when the first 4 digits are 6011 |
| 558 | * or the first 2 digits are 65 |
| 559 | * or the first 6 digits are in the range [622126 - 622925] |
| 560 | * or the first 3 digits are in the range [644 - 649]. |
| 561 | * |
| 562 | * e.g. 6565 0000 0000 0000 |
| 563 | * e.g. 6011 0000 0000 0000 |
| 564 | * e.g. 6221 2900 0000 0000 |
| 565 | * |
| 566 | * @param string $card_number The card number. |
| 567 | * |
| 568 | * @return boolean True if the card number is a Discover, otherwise false. |
| 569 | * |
| 570 | * @uses matchBrandRanges() Verify matches of this brand. |
| 571 | */ |
| 572 | public static function isDiscover($card_number) |
| 573 | { |
| 574 | $card_number = preg_replace('/\D/', '', $card_number); |
| 575 | |
| 576 | // 6011 or 65 or from 622126 to 622925 (included) or from 644 to 649 (included) |
| 577 | $ranges = array( |
| 578 | array(6011), |
| 579 | array(65), |
| 580 | array(622126, 622925), |
| 581 | array(644, 649) |
| 582 | ); |
| 583 | |
| 584 | return self::matchBrandRanges($card_number, $ranges); |
| 585 | } |
| 586 | |
| 587 | /** |
| 588 | * Checks if the card number matches a JCB. |
| 589 | * |
| 590 | * How to identify JCB: |
| 591 | * A credit card is a JCB when the first 4 digits are in the range [3528 - 3589]. |
| 592 | * |
| 593 | * e.g. 3535 0000 0000 0000 |
| 594 | * |
| 595 | * @param string $card_number The card number. |
| 596 | * |
| 597 | * @return boolean True if the card number is a JCB, otherwise false. |
| 598 | * |
| 599 | * @uses matchBrandRanges() |
| 600 | */ |
| 601 | public static function isJcb($card_number) |
| 602 | { |
| 603 | $card_number = preg_replace('/\D/', '', $card_number); |
| 604 | |
| 605 | // from 3528 to 3589 (included) |
| 606 | $ranges = array( |
| 607 | array(3528, 3589), |
| 608 | ); |
| 609 | |
| 610 | return self::matchBrandRanges($card_number, $ranges); |
| 611 | } |
| 612 | |
| 613 | /** |
| 614 | * Returns a list containing the alias of all the accepted brands. |
| 615 | * |
| 616 | * @return array A list with all the supported brand's aliases. |
| 617 | */ |
| 618 | public static function getAllBrands() |
| 619 | { |
| 620 | return array( |
| 621 | CreditCard::VISA, |
| 622 | CreditCard::MASTER_CARD, |
| 623 | CreditCard::AMERICAN_EXPRESS, |
| 624 | CreditCard::DINERS_CLUB, |
| 625 | CreditCard::DISCOVER, |
| 626 | CreditCard::JCB, |
| 627 | ); |
| 628 | } |
| 629 | |
| 630 | /** |
| 631 | * Loads the file which declares the class handler of the specified brand. |
| 632 | * |
| 633 | * @param string $brand The alias of the brand. |
| 634 | * |
| 635 | * @return boolean True if the brand file is loaded correctly, otherwise false. |
| 636 | */ |
| 637 | protected static function load($brand) |
| 638 | { |
| 639 | return VAPLoader::import('libraries.banking.brands.'.$brand); |
| 640 | } |
| 641 | |
| 642 | /** |
| 643 | * Matches the card number with the provided brand card ranges. |
| 644 | * |
| 645 | * @param string $card_number The credit card number. |
| 646 | * @param array $ranges The list containing all the accepted brand ranges. |
| 647 | * |
| 648 | * @return boolean True if the credit card matches at least one range, otherwise false. |
| 649 | */ |
| 650 | protected static function matchBrandRanges($card_number, $ranges = array()) |
| 651 | { |
| 652 | foreach ($ranges as $r) |
| 653 | { |
| 654 | if (count($r) == 1) |
| 655 | { |
| 656 | if (intval(substr($card_number, 0, strlen($r[0]))) == $r[0]) |
| 657 | { |
| 658 | return true; |
| 659 | } |
| 660 | } |
| 661 | else if (count($r) == 2) |
| 662 | { |
| 663 | $val = substr($card_number, 0, strlen($r[0])); |
| 664 | |
| 665 | if ($r[0] <= $val && $val <= $r[1]) |
| 666 | { |
| 667 | return true; |
| 668 | } |
| 669 | } |
| 670 | } |
| 671 | |
| 672 | return false; |
| 673 | } |
| 674 | |
| 675 | /** |
| 676 | * The VISA alias brand identifier. |
| 677 | * |
| 678 | * @var string |
| 679 | */ |
| 680 | const VISA = 'visa'; |
| 681 | |
| 682 | /** |
| 683 | * The MASTER CARD alias brand identifier. |
| 684 | * |
| 685 | * @var string |
| 686 | */ |
| 687 | const MASTER_CARD = 'mastercard'; |
| 688 | |
| 689 | /** |
| 690 | * The AMERICAN EXPRESS alias brand identifier. |
| 691 | * |
| 692 | * @var string |
| 693 | */ |
| 694 | const AMERICAN_EXPRESS = 'amex'; |
| 695 | |
| 696 | /** |
| 697 | * The DINERS CLUB alias brand identifier. |
| 698 | * |
| 699 | * @var string |
| 700 | */ |
| 701 | const DINERS_CLUB = 'diners'; |
| 702 | |
| 703 | /** |
| 704 | * The DISCOVER alias brand identifier. |
| 705 | * |
| 706 | * @var string |
| 707 | */ |
| 708 | const DISCOVER = 'discover'; |
| 709 | |
| 710 | /** |
| 711 | * The JCB alias brand identifier. |
| 712 | * |
| 713 | * @var string |
| 714 | */ |
| 715 | const JCB = 'jcb'; |
| 716 | } |
| 717 |