Detailed explanation of how to convert numbers to RMB capital letters (PHP version)

The RMB is the currency of China, and it has always been considered one of the oldest and most mysterious currencies. When we need to convert a number to RMB capitalization, we need a way to automate this task. In this article, we will introduce how to use PHP to write a simple but effective program to convert numbers to RMB capitalization.

Functions to be used

Before we start writing this program, we need to be familiar with some basic functions of PHP. Here is the list of functions we will use:

1. strlen()- Calculates the length of a string.
2. str_replace()- Replaces a character in a string with another character.
3. str_pad()- Pads the specified characters on the left or right side of the string until the string reaches the specified length.
4. mb_substr()- Extracts a substring of specified length from a string.
5. explode()- Split the string into an array according to the specified characters or strings.

Implementation plan

We can use the following steps to create this program:

• Step 1: Get the user Enter

First, we need to ask the user to enter a positive number and store it in the variable $number.

$number = $_POST['number'];

• Step 2: Convert the number to RMB uppercase

Next, we can use the following code to convert the number to RMB uppercase:

function convert_number_to_rmb($number) { $units = array('分', '角', '元', '十', '百', '千', '万', '十万', '百万', '千万', '亿', '十亿', '百亿', '千亿'); $digit = array('零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖'); $num_units = count($units); $num_digit = count($digit); // 将数字按小数点分割成整数部分和小数部分 $number_array = explode('.', $number); // 将整数部分拆分成数组 $int_array = str_split($number_array[0]); // 初始化结果 $result = ''; // 添加元和整数部分的大写 for ($i = 0; $i < count($int_array); $i++) { $unit_key = ($num_units - 1) - ((count($int_array) - 1 - $i) % $num_units); $digit_key = $int_array[$i]; $result .= $digit[$digit_key] . $units[$unit_key]; } // 如果有小数部分，添加小数部分的大写 if (count($number_array) == 2) { $fraction_array = str_split($number_array[1]); for ($i = 0; $i < count($fraction_array); $i++) { $unit_key = $num_units - 3 + $i; $digit_key = $fraction_array[$i]; if ($digit_key == 0 && $i == 0) { $result .= '整'; break; } $result .= $digit[$digit_key] . $units[$unit_key]; } } else { $result .= '整'; } return $result; }

In this function, we use two arrays: $units and $digit. $units contains the unit name of each digit, while $digit contains the uppercase name of each digit.

• Step 3: Output the results

Finally, we output the results to the user interface.

echo "你要转换的数字是：" . $number . "
"; echo "转换结果为：" . convert_number_to_rmb($number) . "
";

The complete program is as follows:

     
  
 请输入需要转换的数字：
  
 "; echo "转换结果为：" . convert_number_to_rmb($number) . "
"; } function convert_number_to_rmb($number) { $units = array('分', '角', '元', '十', '百', '千', '万', '十万', '百万', '千万', '亿', '十亿', '百亿', '千亿'); $digit = array('零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖'); $num_units = count($units); $num_digit = count($digit); // 将数字按小数点分割成整数部分和小数部分 $number_array = explode('.', $number); // 将整数部分拆分成数组 $int_array = str_split($number_array[0]); // 初始化结果 $result = ''; // 添加元和整数部分的大写 for ($i = 0; $i < count($int_array); $i++) { $unit_key = ($num_units - 1) - ((count($int_array) - 1 - $i) % $num_units); $digit_key = $int_array[$i]; $result .= $digit[$digit_key] . $units[$unit_key]; } // 如果有小数部分，添加小数部分的大写 if (count($number_array) == 2) { $fraction_array = str_split($number_array[1]); for ($i = 0; $i < count($fraction_array); $i++) { $unit_key = $num_units - 3 + $i; $digit_key = $fraction_array[$i]; if ($digit_key == 0 && $i == 0) { $result .= '整'; break; } $result .= $digit[$digit_key] . $units[$unit_key]; } } else { $result .= '整'; } return $result; } ?>  

Summary

In this article, we introduced how to write number conversion using PHP Program to capitalize RMB. We used some PHP functions such as strlen(), str_replace(), str_pad(), mb_substr() and explode(). We also implemented a simple but useful algorithm to convert numbers to RMB capitalization for use in generating automated stories.

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