CALCULATOR IN PHP: Create A Simple Calculator

This example is just a simple PHP script to calculate two (2) values based on the selected operator. The sample output is posted below for illustration.

Output

HTML and PHP Code

<form method="post">
<input type="number" name="first">
<select name="operator">
 <option>+</option>
 <option>-</option>
 <option>*</option>
 <option>/</option>
</select>
<input type="number" name="second">
<input type="submit" name="calc" value="Calculate">
</form>
<?php
if(isset($_POST['calc']))
{
 $first=$_POST['first'];
 $second=$_POST['second'];
 $op=$_POST['operator'];
 if($op=="+")
  $answer=$first+$second;
 if($op=="-")
  $answer=$first-$second;
 if($op=="*")
  $answer=$first*$second;
 if($op=="/")
  $answer=$first/$second;
 
 echo $answer;
}
?>

You need to used a conditional statement to be able to perform certain operation such as addition, subtraction, multiplication and division. Hope you can create your own calculator in php.

CALCULATOR IN PHP: Create A Simple Calculator

CALCULATOR IN PHP: Create A Simple Calculator 2016-01-22T19:15:00-08:00 Rating: 4.5 Diposkan Oleh: Emoblazz