How to multiply two numbers in php

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 implement the function of multiplying two numbers.

In PHP, you can use the "*" operator to perform multiplication calculations. Here 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 defined two variables $num1 and $num2, assigned values ​​of 10 and 20 respectively. Then multiply them using the "*" operator and assign the result to the variable $result. Finally, use the echo function to output the value of $result.

If you want the user to input two numbers and then calculate their product, you can use PHP's form function. Below 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 form above, a POST request is used to submit data to the multiply.php file. When the user clicks the Multiply button, the browser sends the two numbers entered by the user to the server.

Next, we need to process the user-submitted data 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 the two submitted by the user. number. Then multiply them using the "*" operator and assign the result to the variable $result. Finally, use the echo function to output the calculation results.

To summarize, through the above two methods, we can use PHP to realize the function of multiplying two numbers. This is a simple yet important computational task that can be applied in a variety of web applications.

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