How to convert between Fahrenheit and Celsius using PHP

PHP is a popular programming language with many useful features and libraries. One very useful feature is the conversion between Fahrenheit and Celsius. Fahrenheit and Celsius are two different scales for expressing temperature. In some cases, frequent temperature conversions are required. This article will introduce how to use PHP to convert between Fahrenheit and Celsius.

1. Conversion formulas for Fahrenheit and Celsius

Fahrenheit (F) and Celsius (C) are two different temperature scales, where Fahrenheit is defined as:

  F = (C * 1.8) + 32

The conversion formula between Fahrenheit (F) and Celsius (C) is as follows:

  F = (C * 1.8) + 32
  C = (F - 32) / 1.8

2. Use PHP code to achieve temperature conversion

PHP code is very easy to understand and implement. Here's how to use PHP to convert between Fahrenheit and Celsius.

1. Convert Fahrenheit to Celsius

To convert Fahrenheit to Celsius, you can use the following code:

  function fahrenheit_to_celsius($f) {
    $c = ($f - 32) / 1.8;
    return $c;
   }

A function fahrenheit_to_celsius is defined here , can accept a temperature value, convert it to degrees Celsius, and return the result.

2. Convert Celsius to Fahrenheit

To convert Celsius to Fahrenheit, you can use the following code:

  function celsius_to_fahrenheit($c) {
    $f = ($c * 1.8) + 32;
    return $f;
   }

A function celsius_to_fahrenheit is defined here , can accept a temperature value, convert it to Fahrenheit, and return the result.

3. Test code

To verify the correctness of the above code, you can use the following test cases:

  // 测试华氏度转化为摄氏度
  $f = 100;
  $c = fahrenheit_to_celsius($f);
  echo $f . '华氏度 = ' . $c . '摄氏度';
  
  // 测试摄氏度转化为华氏度
  $c = 37;
  $f = celsius_to_fahrenheit($c);
  echo $c . '摄氏度 = ' . $f . '华氏度';

After executing the above code, you will get the following output:

  100华氏度 = 37.777777777778摄氏度
  37摄氏度 = 98.600000000001华氏度

4. Summary

This article introduces how to use PHP to convert between Fahrenheit and Celsius. This feature will be very useful whether you are developing web applications or performing data processing. With the above code, we can easily convert between Fahrenheit and Celsius.

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