我如何有效地在php中编写查找表？

时间：2016-01-31 16:13:23

标签： php function lookup-tables

我正在尝试编写一个查找汽车保险付款$InterestRate值的函数。我在代码下面插入了表格：

目前我尝试过：

function interestRate() {
if ((int)$VehicleYear >= 2001) && (int)$VehicleYear <= 2005){

    $Term = 24;

    if ((int)$CreditScore >= 720){
        $InterestRate = 15.90;
    }
    elseif ((int)$CreditScore >= 610) || ((int)$CreditScore <= 719) {
        $InterestRate = 19.90;
    }
    elseif ((int)$CreditScore >= 580) || ((int)$CreditScore <= 609) {
        $InterestRate = 22.90;
    }
    elseif ((int)$CreditScore >= 530) || ((int)$CreditScore <= 579) {
        $InterestRate = 22.90;
    }
    elseif ((int)$CreditScore >= 489) || ((int)$CreditScore <= 529) {
        $InterestRate = 22.90;
    }
}

if ((int)$VehicleYear == 2006){

    $Term = 24;

    if ((int)$CreditScore >= 720){
        $InterestRate = 15.90;
    }
    elseif ((int)$CreditScore >= 610) || ((int)$CreditScore <= 719) {
        $InterestRate = 18.90;
    }
    elseif ((int)$CreditScore >= 580) || ((int)$CreditScore <= 609) {
        $InterestRate = 21.90;
    }
    elseif ((int)$CreditScore >= 530) || ((int)$CreditScore <= 579) {
        $InterestRate = 22.90;
    }
    elseif ((int)$CreditScore >= 489) || ((int)$CreditScore <= 529) {
        $InterestRate = 22.90;
    }
}
if ((int)$VehicleYear == 2007){

    $Term = 36;

    if ((int)$CreditScore >= 720){
        $InterestRate = 15.90;
    }
    elseif ((int)$CreditScore >= 610) || ((int)$CreditScore <= 719) {
        $InterestRate = 18.90;
    }
    elseif ((int)$CreditScore >= 580) || ((int)$CreditScore <= 609) {
        $InterestRate = 21.90;
    }
    elseif ((int)$CreditScore >= 530) || ((int)$CreditScore <= 579) {
        $InterestRate = 22.90;
    }
    elseif ((int)$CreditScore >= 489) || ((int)$CreditScore <= 529) {
        $InterestRate = 22.90;
    }
}
if ((int)$VehicleYear == 2008){

    $Term = 36;

    if ((int)$CreditScore >= 720){
        $InterestRate = 14.90;
    }
    elseif ((int)$CreditScore >= 610) || ((int)$CreditScore <= 719) {
        $InterestRate = 17.90;
    }
    elseif ((int)$CreditScore >= 580) || ((int)$CreditScore <= 609) {
        $InterestRate = 21.90;
    }
    elseif ((int)$CreditScore >= 530) || ((int)$CreditScore <= 579) {
        $InterestRate = 21.90;
    }
    elseif ((int)$CreditScore >= 489) || ((int)$CreditScore <= 529) {
        $InterestRate = 21.90;
    }
}

if ((int)$VehicleYear == 2009){

    $Term = 36;

    if ((int)$CreditScore >= 720){
        $InterestRate = 14.90;
    }
    elseif ((int)$CreditScore >= 610) || ((int)$CreditScore <= 719) {
        $InterestRate = 17.90;
    }
    elseif ((int)$CreditScore >= 580) || ((int)$CreditScore <= 609) {
        $InterestRate = 20.90;
    }
    elseif ((int)$CreditScore >= 530) || ((int)$CreditScore <= 579) {
        $InterestRate = 20.90;
    }
    elseif ((int)$CreditScore >= 489) || ((int)$CreditScore <= 529) {
        $InterestRate = 20.90;
    }
}

if ((int)$VehicleYear == 2010){

    $Term = 36;

    if ((int)$CreditScore >= 720){
        $InterestRate = 14.90;
    }
    elseif ((int)$CreditScore >= 610) || ((int)$CreditScore <= 719) {
        $InterestRate = 17.90;
    }
    elseif ((int)$CreditScore >= 580) || ((int)$CreditScore <= 609) {
        $InterestRate = 20.90;
    }
    elseif ((int)$CreditScore >= 530) || ((int)$CreditScore <= 579) {
        $InterestRate = 20.90;
    }
    elseif ((int)$CreditScore >= 489) || ((int)$CreditScore <= 529) {
        $InterestRate = 20.90;
    }
}

if ((int)$VehicleYear == 2011){

    $Term = 42;

    if ((int)$CreditScore >= 720){
        $InterestRate = 14.90;
    }
    elseif ((int)$CreditScore >= 610) || ((int)$CreditScore <= 719) {
        $InterestRate = 16.90;
    }
    elseif ((int)$CreditScore >= 580) || ((int)$CreditScore <= 609) {
        $InterestRate = 19.90;
    }
    elseif ((int)$CreditScore >= 530) || ((int)$CreditScore <= 579) {
        $InterestRate = 19.90;
    }
    elseif ((int)$CreditScore >= 489) || ((int)$CreditScore <= 529) {
        $InterestRate = 20.90;
    }
}

if ((int)$VehicleYear == 2012){

    $Term = 42;

    if ((int)$CreditScore >= 720){
        $InterestRate = 12.90;
    }
    elseif ((int)$CreditScore >= 610) || ((int)$CreditScore <= 719) {
        $InterestRate = 15.90;
    }
    elseif ((int)$CreditScore >= 580) || ((int)$CreditScore <= 609) {
        $InterestRate = 18.90;
    }
    elseif ((int)$CreditScore >= 530) || ((int)$CreditScore <= 579) {
        $InterestRate = 19.90;
    }
    elseif ((int)$CreditScore >= 489) || ((int)$CreditScore <= 529) {
        $InterestRate = 19.90;
    }
}

if ((int)$VehicleYear == 2013){

    $Term = 42;

    if ((int)$CreditScore >= 720){
        $InterestRate = 12.90;
    }
    elseif ((int)$CreditScore >= 610) || ((int)$CreditScore <= 719) {
        $InterestRate = 15.90;
    }
    elseif ((int)$CreditScore >= 580) || ((int)$CreditScore <= 609) {
        $InterestRate = 18.90;
    }
    elseif ((int)$CreditScore >= 530) || ((int)$CreditScore <= 579) {
        $InterestRate = 18.90;
    }
    elseif ((int)$CreditScore >= 489) || ((int)$CreditScore <= 529) {
        $InterestRate = 18.90;
    }
}

if ((int)$VehicleYear >= 2014){

    $Term = 48;

    if ((int)$CreditScore >= 720){
        $InterestRate = 11.90;
    }
    elseif ((int)$CreditScore >= 610) || ((int)$CreditScore <= 719) {
        $InterestRate = 14.90;
    }
    elseif ((int)$CreditScore >= 580) || ((int)$CreditScore <= 609) {
        $InterestRate = 17.90;
    }
    elseif ((int)$CreditScore >= 530) || ((int)$CreditScore <= 579) {
        $InterestRate = 18.90;
    }
    elseif ((int)$CreditScore >= 489) || ((int)$CreditScore <= 529) {
        $InterestRate = 18.90;
    }
}
}

当我尝试在计算中使用$InterestRate时，这既繁琐又根本不起作用。接近这个的最佳方法是什么？

编辑：有人提到使用SQL表。我不知道该怎么做。但这是基本上我的表

＆＃13;
＆＃13; 
<table style="undefined;table-layout: fixed; width: 497px">
<colgroup>
<col style="width: 93px">
<col style="width: 73px">
<col style="width: 75px">
<col style="width: 64px">
<col style="width: 64px">
<col style="width: 64px">
<col style="width: 64px">
</colgroup>
  <tr>
    <th>Vehicle Year</th>
    <th>Term</th>
    <th>FICO</th>
    <th>FICO</th>
    <th>FICO</th>
    <th>FICO</th>
    <th>FICO</th>
  </tr>
  <tr>
    <td></td>
    <td></td>
    <td>720 +</td>
    <td>719-610</td>
    <td>609-580</td>
    <td>579-530</td>
    <td>529-489</td>
  </tr>
  <tr>
    <td>2014-current</td>
    <td>48</td>
    <td>11</td>
    <td>14</td>
    <td>17</td>
    <td>18</td>
    <td>18</td>
  </tr>
  <tr>
    <td>2013</td>
    <td>42</td>
    <td>12</td>
    <td>15</td>
    <td>18</td>
    <td>18</td>
    <td>18</td>
  </tr>
  <tr>
    <td>2012</td>
    <td>42</td>
    <td>12</td>
    <td>15</td>
    <td>18</td>
    <td>19</td>
    <td>19</td>
  </tr>
  <tr>
    <td>2011</td>
    <td>42</td>
    <td>14</td>
    <td>16</td>
    <td>19</td>
    <td>19</td>
    <td>20</td>
  </tr>
  <tr>
    <td>2010</td>
    <td>36</td>
    <td>14</td>
    <td>17</td>
    <td>20</td>
    <td>20</td>
    <td>20</td>
  </tr>
  <tr>
    <td>2009</td>
    <td>36</td>
    <td>14</td>
    <td>17</td>
    <td>20</td>
    <td>20</td>
    <td>20</td>
  </tr>
  <tr>
    <td>2008</td>
    <td>36</td>
    <td>14</td>
    <td>17</td>
    <td>21</td>
    <td>21</td>
    <td>21</td>
  </tr>
  <tr>
    <td>2007</td>
    <td>36</td>
    <td>15</td>
    <td>18</td>
    <td>21</td>
    <td>22</td>
    <td>21</td>
  </tr>
  <tr>
    <td>2006</td>
    <td>24</td>
    <td>15</td>
    <td>18</td>
    <td>21</td>
    <td>22</td>
    <td>22</td>
  </tr>
  <tr>
    <td>2001-2005</td>
    <td>24</td>
    <td>15</td>
    <td>19</td>
    <td>22</td>
    <td>22</td>
    <td>22</td>
  </tr>
</table>
Extra o
＆＃13;
＆＃13;
＆＃13;

1 个答案:

答案 0 :(得分：1)

现在开始：删除所有重复的代码：

function creditScore( $cs ) {
    $cs = (int) $cs;

    if     ($cs >= 720)               return 5;
    elseif ($cs >= 610 && $cs <= 719) return 4;
    elseif ($cs >= 580 && $cs <= 609) return 3;
    elseif ($cs >= 530 && $cs <= 579) return 2;
    elseif ($cs >= 489 && $cs <= 529) return 1;
    else                              return 0;
}

function interestRate($vehicleYear, $creditScore) {
    $vehicleYear = (int) $vehicleYear;
    $cred = creditScore( $creditScore );
    if ( ! $cred )      // handle credit score below 489: returns 0
        throw new Exception("Unsupported creditScore: $creditScore" );
    $cred--;    // otherwise it's 1..5, change to 0..4 for array index

    $rates = [
        2001 => [ 'term' => 24, 'rates' => [ 22.90, 22.90, 22.90, 19.90, 15.90 ] ],
        2002 => [ 'term' => 24, 'rates' => [ 22.90, 22.90, 22.90, 19.90, 15.90 ] ],
        2003 => [ 'term' => 24, 'rates' => [ 22.90, 22.90, 22.90, 19.90, 15.90 ] ],
        2004 => [ 'term' => 24, 'rates' => [ 22.90, 22.90, 22.90, 19.90, 15.90 ] ],
        2005 => [ 'term' => 24, 'rates' => [ 22.90, 22.90, 22.90, 19.90, 15.90 ] ],
        2006 => [ 'term' => 24, 'rates' => [ 22.90, 22.90, 21.90, 18.90, 15.90 ] ],
        2007 => [ 'term' => 36, 'rates' => [ 22.90, 22.90, 21.90, 18.90, 15.90 ] ],
        2008 => [ 'term' => 36, 'rates' => [ 22.90, 22.90, 21.90, 17.90, 14.90 ] ],
        2009 => [ 'term' => 36, 'rates' => [ 20.90, 20.90, 20.90, 17.90, 14.90 ] ],
        2010 => [ 'term' => 36, 'rates' => [ 20.90, 20.90, 20.90, 17.90, 14.90 ] ],
        2011 => [ 'term' => 42, 'rates' => [ 20.90, 19.90, 19.90, 16.90, 14.90 ] ],
        2012 => [ 'term' => 42, 'rates' => [ 19.90, 19.90, 18.90, 15.90, 12.90 ] ],
        2013 => [ 'term' => 42, 'rates' => [ 18.90, 18.90, 18.90, 15.90, 12.90 ] ],
        2014 => [ 'term' => 48, 'rates' => [ 18.90, 18.90, 17.90, 14.90, 11.90 ] ],
    ];

    return [ // TODO: check if isset( $rates[$vehicleYear ])
        $rates[$vehicleYear]['rates'][ $cred ],
        $rates[$vehicleYear]['term']
    ];
}

list( $interestRate, $term ) = interestRate( 2013, 666 );
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