Question

使用此价格表我们正在计算给定输入测量的价格

示例：

(1) width = 30; , height =56 ; Price=? 

 so 
 (width>25){ new_width=50; }
 (height<100){ new_height=100; }

    so price = 20;


(2) width =12; height=267;

    (width<25){ new_width=25; }
    (height>250){ new_height=300; }

    so price= 30;

我写了一个函数来根据给定的值计算价格，这个函数有助于根据表格得到new_width和height，但我不知道怎么弄价格基于此表。

function calculate_price($width,$height ){

        if($width<25){
             $new_width=25;
          }elseif($width>25 && $width<50 ){
             $new_width=50;
          }else{
            $new_width=50;
          }  


        if($width<100){
             $new_width=100;
          }elseif($width>100 && $width<150 ){
             $new_width=150;
          }elseif($width>150 && $width<200 ){
             $new_width=200;
          }elseif($width>200 && $width<250 ){
             $new_width=250;
          }elseif($width>250 && $width<300 ){
             $new_width=300;
          }
          else{
            $new_width=300;
          }


        $price=needed forumula [ based on new_width & new_height ];

      return $price ;



    }

Answer 1

您可以使用ceil来舍入此功能的宽度和高度

为简单起见，您可以使用数组以键height_width存储价格。

function calculate_price($width, $height) {
    $price = array(
        "100_25" => 10,
        "100_50" => 20,
        "150_25" => 15,
        "150_50" => 25,
        "200_25" => 18,
        "200_50" => 31,
        "250_25" => 24,
        "250_50" => 42,
        "300_25" => 20,
        "300_50" => 45,
    );

    $newWidth = ceil($width / 25) * 25; //Round up by 25
    $newHeight = ceil($height / 50) * 50; //Round up by 50

    return $price[ $newHeight . "_" . $newWidth ];
}

你可以打电话

echo calculate_price( 30, 56 ); /* width and height parameters */

这将导致

Answer 2

根据您提供的信息，您有两条逻辑路径。第一个是宽度小于或等于25或宽度大于25.然后你必须推断出高度。

请考虑以下事项：

function calculate_price($width, $height){
  $price = false;
  if($width > 25){
    switch(true){
      case $height <= 100:
        $price = 20;
        break;
      case $height <= 150:
        $price = 25;
        break;
      case $height <= 200:
        $price = 31;
        break;
      case $height <= 250:
        $price = 42;
        break;
      case $height <= 300:
        $price = 45;
        break;
    }
  } else {
    switch(true){
      case $height <= 100:
        $price = 10;
        break;
      case $height <= 150:
        $price = 15;
        break;
      case $height <= 200:
        $price = 18;
        break;
      case $height <= 250:
        $price = 24;
        break;
      case $height <= 300:
        $price = 30;
        break;
    }
  }
  return $price;
}

使用以下输入：echo calculate_price(30, 56);我们的输出为：20。

运行以下内容：

echo calculate_price(30, 56) . "<br />";
echo calculate_price(12, 267) . "<br />";
echo calculate_price(25, 249) . "<br />";

我明白了：

20
30
24

根据需要格式化（E.G。：echo sprintf("$%d.00", calculate_price(30, 56));）

完整测试

<?php
function calculate_price($width, $height){
    $price = false;
    if(!is_int($width) || !is_int($height)){
        return $price;
    }
    if($width > 25){
        switch(true){
            case $height <= 100:
            $price = 20;
            break;
            case $height <= 150:
            $price = 25;
            break;
            case $height <= 200:
            $price = 31;
            break;
            case $height <= 250:
            $price = 42;
            break;
            case $height <= 300:
            $price = 45;
            break;
        }
    } else {
        switch(true){
            case $height <= 100:
            $price = 10;
            break;
            case $height <= 150:
            $price = 15;
            break;
            case $height <= 200:
            $price = 18;
            break;
            case $height <= 250:
            $price = 24;
            break;
            case $height <= 300:
            $price = 30;
            break;
        }
    }
    return $price;
}

echo sprintf("$%d.00", calculate_price(30, 56)) . "<br />";
echo sprintf("$%d.00", calculate_price(12, 267)) . "<br />";
echo sprintf("$%d.00", calculate_price(25, 249)) . "<br />";
echo sprintf("$%d.00", calculate_price(-1, 'a')) . "<br />";
?>

结果：

$20.00
$30.00
$24.00
$0.00

Answer 3

您可以使用多维数组

$x = "300";
$y = "50";

$multi  = array();

$multi["100"]["25"] = "10";
$multi["100"]["50"] =  "20";
$multi["200"]["25"] = "30";
$multi["300"]["50"] =  "40";    

echo $multi[$x][$y];

Answer 4

根据你的代码，如果你没有数据库来获得这些价格，我想你可以试试这样的话：

function calculate_price($width,$height ){
    // Your $new_width according to your $width
    if($width<=25){
        $new_width=25;
    }else
        $new_width=50;
    }  

    // Your $new_height according to your $height
    if($height<=100){
        $new_height=100;
    }elseif($height>100 && $height<=150 ){
        $new_height=150;
    }elseif($height>150 && $height<=200 ){
        $new_height=200;
    }elseif($height>200 && $height<=250 ){
        $new_height=250;
    }elseif($height>250){
        $new_height=300;
    }

    // Now, according to your new value you will find the price with some test :
    if ($new_width == 25) {
        switch($new_height) {
            case 100 : $price = 10; break;
            case 150 : $price = 15; break;
            case 200 : $price = 18; break;
            case 250 : $price = 24; break;
            case 300 : $price = 30; break;
        }
    } else {
        switch($new_height) {
            case 100 : $price = 20; break;
            case 150 : $price = 25; break;
            case 200 : $price = 31; break;
            case 250 : $price = 42; break;
            case 300 : $price = 45; break;
        }
    }

  return $price ;
}

但我认为你也可以找到其他方式来实现它，正如其他anwser所建议的那样！

这是你在找什么？它不是很灵活，因为您不使用数据库来获取这些值，但它应该可以工作

基于给定表

4 个答案: