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1 <?php 2 /** 3 * PHPExcel 4 * 5 * Copyright (c) 2006 - 2014 PHPExcel 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with this library; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 * 21 * @category PHPExcel 22 * @package PHPExcel_Calculation 23 * @copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel) 24 * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL 25 * @version ##VERSION##, ##DATE## 26 */ 27 28 29 /** PHPExcel root directory */ 30 if (!defined('PHPEXCEL_ROOT')) { 31 /** 32 * @ignore 33 */ 34 define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../'); 35 require (PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php'); 36 } 37 38 39 /** 40 * PHPExcel_Calculation_Database 41 * 42 * @category PHPExcel 43 * @package PHPExcel_Calculation 44 * @copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel) 45 */ 46 class PHPExcel_Calculation_Database { 47 48 49 /** 50 * __fieldExtract 51 * 52 * Extracts the column ID to use for the data field. 53 * 54 * @access private 55 * @param mixed[] $database The range of cells that makes up the list or database. 56 * A database is a list of related data in which rows of related 57 * information are records, and columns of data are fields. The 58 * first row of the list contains labels for each column. 59 * @param mixed $field Indicates which column is used in the function. Enter the 60 * column label enclosed between double quotation marks, such as 61 * "Age" or "Yield," or a number (without quotation marks) that 62 * represents the position of the column within the list: 1 for 63 * the first column, 2 for the second column, and so on. 64 * @return string|NULL 65 * 66 */ 67 private static function __fieldExtract($database,$field) { 68 $field = strtoupper(PHPExcel_Calculation_Functions::flattenSingleValue($field)); 69 $fieldNames = array_map('strtoupper',array_shift($database)); 70 71 if (is_numeric($field)) { 72 $keys = array_keys($fieldNames); 73 return $keys[$field-1]; 74 } 75 $key = array_search($field,$fieldNames); 76 return ($key) ? $key : NULL; 77 } 78 79 /** 80 * __filter 81 * 82 * Parses the selection criteria, extracts the database rows that match those criteria, and 83 * returns that subset of rows. 84 * 85 * @access private 86 * @param mixed[] $database The range of cells that makes up the list or database. 87 * A database is a list of related data in which rows of related 88 * information are records, and columns of data are fields. The 89 * first row of the list contains labels for each column. 90 * @param mixed[] $criteria The range of cells that contains the conditions you specify. 91 * You can use any range for the criteria argument, as long as it 92 * includes at least one column label and at least one cell below 93 * the column label in which you specify a condition for the 94 * column. 95 * @return array of mixed 96 * 97 */ 98 private static function __filter($database,$criteria) { 99 $fieldNames = array_shift($database); 100 $criteriaNames = array_shift($criteria); 101 102 // Convert the criteria into a set of AND/OR conditions with [:placeholders] 103 $testConditions = $testValues = array(); 104 $testConditionsCount = 0; 105 foreach($criteriaNames as $key => $criteriaName) { 106 $testCondition = array(); 107 $testConditionCount = 0; 108 foreach($criteria as $row => $criterion) { 109 if ($criterion[$key] > '') { 110 $testCondition[] = '[:'.$criteriaName.']'.PHPExcel_Calculation_Functions::_ifCondition($criterion[$key]); 111 $testConditionCount++; 112 } 113 } 114 if ($testConditionCount > 1) { 115 $testConditions[] = 'OR('.implode(',',$testCondition).')'; 116 $testConditionsCount++; 117 } elseif($testConditionCount == 1) { 118 $testConditions[] = $testCondition[0]; 119 $testConditionsCount++; 120 } 121 } 122 123 if ($testConditionsCount > 1) { 124 $testConditionSet = 'AND('.implode(',',$testConditions).')'; 125 } elseif($testConditionsCount == 1) { 126 $testConditionSet = $testConditions[0]; 127 } 128 129 // Loop through each row of the database 130 foreach($database as $dataRow => $dataValues) { 131 // Substitute actual values from the database row for our [:placeholders] 132 $testConditionList = $testConditionSet; 133 foreach($criteriaNames as $key => $criteriaName) { 134 $k = array_search($criteriaName,$fieldNames); 135 if (isset($dataValues[$k])) { 136 $dataValue = $dataValues[$k]; 137 $dataValue = (is_string($dataValue)) ? PHPExcel_Calculation::_wrapResult(strtoupper($dataValue)) : $dataValue; 138 $testConditionList = str_replace('[:'.$criteriaName.']',$dataValue,$testConditionList); 139 } 140 } 141 // evaluate the criteria against the row data 142 $result = PHPExcel_Calculation::getInstance()->_calculateFormulaValue('='.$testConditionList); 143 // If the row failed to meet the criteria, remove it from the database 144 if (!$result) { 145 unset($database[$dataRow]); 146 } 147 } 148 149 return $database; 150 } 151 152 153 /** 154 * DAVERAGE 155 * 156 * Averages the values in a column of a list or database that match conditions you specify. 157 * 158 * Excel Function: 159 * DAVERAGE(database,field,criteria) 160 * 161 * @access public 162 * @category Database Functions 163 * @param mixed[] $database The range of cells that makes up the list or database. 164 * A database is a list of related data in which rows of related 165 * information are records, and columns of data are fields. The 166 * first row of the list contains labels for each column. 167 * @param string|integer $field Indicates which column is used in the function. Enter the 168 * column label enclosed between double quotation marks, such as 169 * "Age" or "Yield," or a number (without quotation marks) that 170 * represents the position of the column within the list: 1 for 171 * the first column, 2 for the second column, and so on. 172 * @param mixed[] $criteria The range of cells that contains the conditions you specify. 173 * You can use any range for the criteria argument, as long as it 174 * includes at least one column label and at least one cell below 175 * the column label in which you specify a condition for the 176 * column. 177 * @return float 178 * 179 */ 180 public static function DAVERAGE($database,$field,$criteria) { 181 $field = self::__fieldExtract($database,$field); 182 if (is_null($field)) { 183 return NULL; 184 } 185 // reduce the database to a set of rows that match all the criteria 186 $database = self::__filter($database,$criteria); 187 // extract an array of values for the requested column 188 $colData = array(); 189 foreach($database as $row) { 190 $colData[] = $row[$field]; 191 } 192 193 // Return 194 return PHPExcel_Calculation_Statistical::AVERAGE($colData); 195 } // function DAVERAGE() 196 197 198 /** 199 * DCOUNT 200 * 201 * Counts the cells that contain numbers in a column of a list or database that match conditions 202 * that you specify. 203 * 204 * Excel Function: 205 * DCOUNT(database,[field],criteria) 206 * 207 * Excel Function: 208 * DAVERAGE(database,field,criteria) 209 * 210 * @access public 211 * @category Database Functions 212 * @param mixed[] $database The range of cells that makes up the list or database. 213 * A database is a list of related data in which rows of related 214 * information are records, and columns of data are fields. The 215 * first row of the list contains labels for each column. 216 * @param string|integer $field Indicates which column is used in the function. Enter the 217 * column label enclosed between double quotation marks, such as 218 * "Age" or "Yield," or a number (without quotation marks) that 219 * represents the position of the column within the list: 1 for 220 * the first column, 2 for the second column, and so on. 221 * @param mixed[] $criteria The range of cells that contains the conditions you specify. 222 * You can use any range for the criteria argument, as long as it 223 * includes at least one column label and at least one cell below 224 * the column label in which you specify a condition for the 225 * column. 226 * @return integer 227 * 228 * @TODO The field argument is optional. If field is omitted, DCOUNT counts all records in the 229 * database that match the criteria. 230 * 231 */ 232 public static function DCOUNT($database,$field,$criteria) { 233 $field = self::__fieldExtract($database,$field); 234 if (is_null($field)) { 235 return NULL; 236 } 237 238 // reduce the database to a set of rows that match all the criteria 239 $database = self::__filter($database,$criteria); 240 // extract an array of values for the requested column 241 $colData = array(); 242 foreach($database as $row) { 243 $colData[] = $row[$field]; 244 } 245 246 // Return 247 return PHPExcel_Calculation_Statistical::COUNT($colData); 248 } // function DCOUNT() 249 250 251 /** 252 * DCOUNTA 253 * 254 * Counts the nonblank cells in a column of a list or database that match conditions that you specify. 255 * 256 * Excel Function: 257 * DCOUNTA(database,[field],criteria) 258 * 259 * @access public 260 * @category Database Functions 261 * @param mixed[] $database The range of cells that makes up the list or database. 262 * A database is a list of related data in which rows of related 263 * information are records, and columns of data are fields. The 264 * first row of the list contains labels for each column. 265 * @param string|integer $field Indicates which column is used in the function. Enter the 266 * column label enclosed between double quotation marks, such as 267 * "Age" or "Yield," or a number (without quotation marks) that 268 * represents the position of the column within the list: 1 for 269 * the first column, 2 for the second column, and so on. 270 * @param mixed[] $criteria The range of cells that contains the conditions you specify. 271 * You can use any range for the criteria argument, as long as it 272 * includes at least one column label and at least one cell below 273 * the column label in which you specify a condition for the 274 * column. 275 * @return integer 276 * 277 * @TODO The field argument is optional. If field is omitted, DCOUNTA counts all records in the 278 * database that match the criteria. 279 * 280 */ 281 public static function DCOUNTA($database,$field,$criteria) { 282 $field = self::__fieldExtract($database,$field); 283 if (is_null($field)) { 284 return NULL; 285 } 286 287 // reduce the database to a set of rows that match all the criteria 288 $database = self::__filter($database,$criteria); 289 // extract an array of values for the requested column 290 $colData = array(); 291 foreach($database as $row) { 292 $colData[] = $row[$field]; 293 } 294 295 // Return 296 return PHPExcel_Calculation_Statistical::COUNTA($colData); 297 } // function DCOUNTA() 298 299 300 /** 301 * DGET 302 * 303 * Extracts a single value from a column of a list or database that matches conditions that you 304 * specify. 305 * 306 * Excel Function: 307 * DGET(database,field,criteria) 308 * 309 * @access public 310 * @category Database Functions 311 * @param mixed[] $database The range of cells that makes up the list or database. 312 * A database is a list of related data in which rows of related 313 * information are records, and columns of data are fields. The 314 * first row of the list contains labels for each column. 315 * @param string|integer $field Indicates which column is used in the function. Enter the 316 * column label enclosed between double quotation marks, such as 317 * "Age" or "Yield," or a number (without quotation marks) that 318 * represents the position of the column within the list: 1 for 319 * the first column, 2 for the second column, and so on. 320 * @param mixed[] $criteria The range of cells that contains the conditions you specify. 321 * You can use any range for the criteria argument, as long as it 322 * includes at least one column label and at least one cell below 323 * the column label in which you specify a condition for the 324 * column. 325 * @return mixed 326 * 327 */ 328 public static function DGET($database,$field,$criteria) { 329 $field = self::__fieldExtract($database,$field); 330 if (is_null($field)) { 331 return NULL; 332 } 333 334 // reduce the database to a set of rows that match all the criteria 335 $database = self::__filter($database,$criteria); 336 // extract an array of values for the requested column 337 $colData = array(); 338 foreach($database as $row) { 339 $colData[] = $row[$field]; 340 } 341 342 // Return 343 if (count($colData) > 1) { 344 return PHPExcel_Calculation_Functions::NaN(); 345 } 346 347 return $colData[0]; 348 } // function DGET() 349 350 351 /** 352 * DMAX 353 * 354 * Returns the largest number in a column of a list or database that matches conditions you that 355 * specify. 356 * 357 * Excel Function: 358 * DMAX(database,field,criteria) 359 * 360 * @access public 361 * @category Database Functions 362 * @param mixed[] $database The range of cells that makes up the list or database. 363 * A database is a list of related data in which rows of related 364 * information are records, and columns of data are fields. The 365 * first row of the list contains labels for each column. 366 * @param string|integer $field Indicates which column is used in the function. Enter the 367 * column label enclosed between double quotation marks, such as 368 * "Age" or "Yield," or a number (without quotation marks) that 369 * represents the position of the column within the list: 1 for 370 * the first column, 2 for the second column, and so on. 371 * @param mixed[] $criteria The range of cells that contains the conditions you specify. 372 * You can use any range for the criteria argument, as long as it 373 * includes at least one column label and at least one cell below 374 * the column label in which you specify a condition for the 375 * column. 376 * @return float 377 * 378 */ 379 public static function DMAX($database,$field,$criteria) { 380 $field = self::__fieldExtract($database,$field); 381 if (is_null($field)) { 382 return NULL; 383 } 384 385 // reduce the database to a set of rows that match all the criteria 386 $database = self::__filter($database,$criteria); 387 // extract an array of values for the requested column 388 $colData = array(); 389 foreach($database as $row) { 390 $colData[] = $row[$field]; 391 } 392 393 // Return 394 return PHPExcel_Calculation_Statistical::MAX($colData); 395 } // function DMAX() 396 397 398 /** 399 * DMIN 400 * 401 * Returns the smallest number in a column of a list or database that matches conditions you that 402 * specify. 403 * 404 * Excel Function: 405 * DMIN(database,field,criteria) 406 * 407 * @access public 408 * @category Database Functions 409 * @param mixed[] $database The range of cells that makes up the list or database. 410 * A database is a list of related data in which rows of related 411 * information are records, and columns of data are fields. The 412 * first row of the list contains labels for each column. 413 * @param string|integer $field Indicates which column is used in the function. Enter the 414 * column label enclosed between double quotation marks, such as 415 * "Age" or "Yield," or a number (without quotation marks) that 416 * represents the position of the column within the list: 1 for 417 * the first column, 2 for the second column, and so on. 418 * @param mixed[] $criteria The range of cells that contains the conditions you specify. 419 * You can use any range for the criteria argument, as long as it 420 * includes at least one column label and at least one cell below 421 * the column label in which you specify a condition for the 422 * column. 423 * @return float 424 * 425 */ 426 public static function DMIN($database,$field,$criteria) { 427 $field = self::__fieldExtract($database,$field); 428 if (is_null($field)) { 429 return NULL; 430 } 431 432 // reduce the database to a set of rows that match all the criteria 433 $database = self::__filter($database,$criteria); 434 // extract an array of values for the requested column 435 $colData = array(); 436 foreach($database as $row) { 437 $colData[] = $row[$field]; 438 } 439 440 // Return 441 return PHPExcel_Calculation_Statistical::MIN($colData); 442 } // function DMIN() 443 444 445 /** 446 * DPRODUCT 447 * 448 * Multiplies the values in a column of a list or database that match conditions that you specify. 449 * 450 * Excel Function: 451 * DPRODUCT(database,field,criteria) 452 * 453 * @access public 454 * @category Database Functions 455 * @param mixed[] $database The range of cells that makes up the list or database. 456 * A database is a list of related data in which rows of related 457 * information are records, and columns of data are fields. The 458 * first row of the list contains labels for each column. 459 * @param string|integer $field Indicates which column is used in the function. Enter the 460 * column label enclosed between double quotation marks, such as 461 * "Age" or "Yield," or a number (without quotation marks) that 462 * represents the position of the column within the list: 1 for 463 * the first column, 2 for the second column, and so on. 464 * @param mixed[] $criteria The range of cells that contains the conditions you specify. 465 * You can use any range for the criteria argument, as long as it 466 * includes at least one column label and at least one cell below 467 * the column label in which you specify a condition for the 468 * column. 469 * @return float 470 * 471 */ 472 public static function DPRODUCT($database,$field,$criteria) { 473 $field = self::__fieldExtract($database,$field); 474 if (is_null($field)) { 475 return NULL; 476 } 477 478 // reduce the database to a set of rows that match all the criteria 479 $database = self::__filter($database,$criteria); 480 // extract an array of values for the requested column 481 $colData = array(); 482 foreach($database as $row) { 483 $colData[] = $row[$field]; 484 } 485 486 // Return 487 return PHPExcel_Calculation_MathTrig::PRODUCT($colData); 488 } // function DPRODUCT() 489 490 491 /** 492 * DSTDEV 493 * 494 * Estimates the standard deviation of a population based on a sample by using the numbers in a 495 * column of a list or database that match conditions that you specify. 496 * 497 * Excel Function: 498 * DSTDEV(database,field,criteria) 499 * 500 * @access public 501 * @category Database Functions 502 * @param mixed[] $database The range of cells that makes up the list or database. 503 * A database is a list of related data in which rows of related 504 * information are records, and columns of data are fields. The 505 * first row of the list contains labels for each column. 506 * @param string|integer $field Indicates which column is used in the function. Enter the 507 * column label enclosed between double quotation marks, such as 508 * "Age" or "Yield," or a number (without quotation marks) that 509 * represents the position of the column within the list: 1 for 510 * the first column, 2 for the second column, and so on. 511 * @param mixed[] $criteria The range of cells that contains the conditions you specify. 512 * You can use any range for the criteria argument, as long as it 513 * includes at least one column label and at least one cell below 514 * the column label in which you specify a condition for the 515 * column. 516 * @return float 517 * 518 */ 519 public static function DSTDEV($database,$field,$criteria) { 520 $field = self::__fieldExtract($database,$field); 521 if (is_null($field)) { 522 return NULL; 523 } 524 525 // reduce the database to a set of rows that match all the criteria 526 $database = self::__filter($database,$criteria); 527 // extract an array of values for the requested column 528 $colData = array(); 529 foreach($database as $row) { 530 $colData[] = $row[$field]; 531 } 532 533 // Return 534 return PHPExcel_Calculation_Statistical::STDEV($colData); 535 } // function DSTDEV() 536 537 538 /** 539 * DSTDEVP 540 * 541 * Calculates the standard deviation of a population based on the entire population by using the 542 * numbers in a column of a list or database that match conditions that you specify. 543 * 544 * Excel Function: 545 * DSTDEVP(database,field,criteria) 546 * 547 * @access public 548 * @category Database Functions 549 * @param mixed[] $database The range of cells that makes up the list or database. 550 * A database is a list of related data in which rows of related 551 * information are records, and columns of data are fields. The 552 * first row of the list contains labels for each column. 553 * @param string|integer $field Indicates which column is used in the function. Enter the 554 * column label enclosed between double quotation marks, such as 555 * "Age" or "Yield," or a number (without quotation marks) that 556 * represents the position of the column within the list: 1 for 557 * the first column, 2 for the second column, and so on. 558 * @param mixed[] $criteria The range of cells that contains the conditions you specify. 559 * You can use any range for the criteria argument, as long as it 560 * includes at least one column label and at least one cell below 561 * the column label in which you specify a condition for the 562 * column. 563 * @return float 564 * 565 */ 566 public static function DSTDEVP($database,$field,$criteria) { 567 $field = self::__fieldExtract($database,$field); 568 if (is_null($field)) { 569 return NULL; 570 } 571 572 // reduce the database to a set of rows that match all the criteria 573 $database = self::__filter($database,$criteria); 574 // extract an array of values for the requested column 575 $colData = array(); 576 foreach($database as $row) { 577 $colData[] = $row[$field]; 578 } 579 580 // Return 581 return PHPExcel_Calculation_Statistical::STDEVP($colData); 582 } // function DSTDEVP() 583 584 585 /** 586 * DSUM 587 * 588 * Adds the numbers in a column of a list or database that match conditions that you specify. 589 * 590 * Excel Function: 591 * DSUM(database,field,criteria) 592 * 593 * @access public 594 * @category Database Functions 595 * @param mixed[] $database The range of cells that makes up the list or database. 596 * A database is a list of related data in which rows of related 597 * information are records, and columns of data are fields. The 598 * first row of the list contains labels for each column. 599 * @param string|integer $field Indicates which column is used in the function. Enter the 600 * column label enclosed between double quotation marks, such as 601 * "Age" or "Yield," or a number (without quotation marks) that 602 * represents the position of the column within the list: 1 for 603 * the first column, 2 for the second column, and so on. 604 * @param mixed[] $criteria The range of cells that contains the conditions you specify. 605 * You can use any range for the criteria argument, as long as it 606 * includes at least one column label and at least one cell below 607 * the column label in which you specify a condition for the 608 * column. 609 * @return float 610 * 611 */ 612 public static function DSUM($database,$field,$criteria) { 613 $field = self::__fieldExtract($database,$field); 614 if (is_null($field)) { 615 return NULL; 616 } 617 618 // reduce the database to a set of rows that match all the criteria 619 $database = self::__filter($database,$criteria); 620 // extract an array of values for the requested column 621 $colData = array(); 622 foreach($database as $row) { 623 $colData[] = $row[$field]; 624 } 625 626 // Return 627 return PHPExcel_Calculation_MathTrig::SUM($colData); 628 } // function DSUM() 629 630 631 /** 632 * DVAR 633 * 634 * Estimates the variance of a population based on a sample by using the numbers in a column 635 * of a list or database that match conditions that you specify. 636 * 637 * Excel Function: 638 * DVAR(database,field,criteria) 639 * 640 * @access public 641 * @category Database Functions 642 * @param mixed[] $database The range of cells that makes up the list or database. 643 * A database is a list of related data in which rows of related 644 * information are records, and columns of data are fields. The 645 * first row of the list contains labels for each column. 646 * @param string|integer $field Indicates which column is used in the function. Enter the 647 * column label enclosed between double quotation marks, such as 648 * "Age" or "Yield," or a number (without quotation marks) that 649 * represents the position of the column within the list: 1 for 650 * the first column, 2 for the second column, and so on. 651 * @param mixed[] $criteria The range of cells that contains the conditions you specify. 652 * You can use any range for the criteria argument, as long as it 653 * includes at least one column label and at least one cell below 654 * the column label in which you specify a condition for the 655 * column. 656 * @return float 657 * 658 */ 659 public static function DVAR($database,$field,$criteria) { 660 $field = self::__fieldExtract($database,$field); 661 if (is_null($field)) { 662 return NULL; 663 } 664 665 // reduce the database to a set of rows that match all the criteria 666 $database = self::__filter($database,$criteria); 667 // extract an array of values for the requested column 668 $colData = array(); 669 foreach($database as $row) { 670 $colData[] = $row[$field]; 671 } 672 673 // Return 674 return PHPExcel_Calculation_Statistical::VARFunc($colData); 675 } // function DVAR() 676 677 678 /** 679 * DVARP 680 * 681 * Calculates the variance of a population based on the entire population by using the numbers 682 * in a column of a list or database that match conditions that you specify. 683 * 684 * Excel Function: 685 * DVARP(database,field,criteria) 686 * 687 * @access public 688 * @category Database Functions 689 * @param mixed[] $database The range of cells that makes up the list or database. 690 * A database is a list of related data in which rows of related 691 * information are records, and columns of data are fields. The 692 * first row of the list contains labels for each column. 693 * @param string|integer $field Indicates which column is used in the function. Enter the 694 * column label enclosed between double quotation marks, such as 695 * "Age" or "Yield," or a number (without quotation marks) that 696 * represents the position of the column within the list: 1 for 697 * the first column, 2 for the second column, and so on. 698 * @param mixed[] $criteria The range of cells that contains the conditions you specify. 699 * You can use any range for the criteria argument, as long as it 700 * includes at least one column label and at least one cell below 701 * the column label in which you specify a condition for the 702 * column. 703 * @return float 704 * 705 */ 706 public static function DVARP($database,$field,$criteria) { 707 $field = self::__fieldExtract($database,$field); 708 if (is_null($field)) { 709 return NULL; 710 } 711 712 // reduce the database to a set of rows that match all the criteria 713 $database = self::__filter($database,$criteria); 714 // extract an array of values for the requested column 715 $colData = array(); 716 foreach($database as $row) { 717 $colData[] = $row[$field]; 718 } 719 720 // Return 721 return PHPExcel_Calculation_Statistical::VARP($colData); 722 } // function DVARP() 723 724 725 } // class PHPExcel_Calculation_Database
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| Generated: Fri Nov 28 20:29:05 2014 | Cross-referenced by PHPXref 0.7.1 |