What is the method to multiply two numbers in php

How to multiply two numbers in php: 1. Create a php sample file; 2. Define two variables as "$num1" and "$num2"; 3. Use the "*" operator To multiply two numbers, the code is like "$result=$num1*$num2"; 4. Output the value of "$result' through "echo".

The operating system of this tutorial: Windows 10 system, PHP version 8.1.3, Dell G3 computer.

PHP is a commonly used server-side scripting language that can be used to develop various Web applications. This article will Introduce how to use PHP to realize the function of multiplying two numbers.

Method of multiplying two numbers in PHP

In PHP, you can use "*" operator to perform multiplication calculations. The following is a simple PHP program that demonstrates how to multiply two numbers:

<?php
$num1 = 10;
$num2 = 20;
$result = $num1 * $num2;
echo $result;
?>

In the above program, we define two variables $num1 and $num2, respectively Assign the values ​​​​to 10 and 20. Then use the "*" operator to multiply them and assign the result to the variable $result. Finally, use the echo function to output the value of $result.

If you want to implement the user input of two numbers , and then calculate their product, you can use PHP's form function. The following is a simple form that allows the user to enter two numbers:

<form action="multiply.php" method="post">
  Number 1: <input type="text" name="num1"><br>
  Number 2: <input type="text" name="num2"><br>
  <input type="submit" value="Multiply">
</form>

In the above form, a POST request is used to submit the data to multiply .php file. When the user clicks the Multiply button, the browser will send the two numbers entered by the user to the server.

Next, we need to process the data submitted by the user in the multiply.php file, and then Calculate their product. The following is a simple PHP program that demonstrates how to implement this function:

<?php
$num1 = $_POST[&#39;num1&#39;];
$num2 = $_POST[&#39;num2&#39;];
$result = $num1 * $num2;
echo "The result is: " . $result;
?>

In the above program, we use $_POST['num1'] and $_POST['num2'] to obtain Two numbers submitted by the user. Then use the "*" operator to multiply them and assign the result to the variable $result. Finally, use the echo function to output the calculation result.

To summarize, through the above two methods, We can use PHP to implement the function of multiplying two numbers. This is a simple but important calculation task that can be applied to various web applications.

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