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PHP

Basic Math Operations in PHP

 In this tutorial I wrote this program to ask the user to give two numbers and then the program will performed addition, subtraction, multiplication, and division using PHP programming language.

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Program Listing

<!DOCTYPE html>

<html lang="en">

<head>

     <meta charset="UTF-8">

     <meta name="viewport" content="width=device-width, initial-scale=1.0">

     <title>Basic Math Operations in PHP</title>



     <style>

          body {

               background: #f1f1f1;

               font-family: arial;

               size : 16px;



          }

          form {

               background-color: rgba(0, 0, 0, 0.7);

               color: #000;

               padding: 50px;

               position: absolute;

               -webkit-transform: translate(-50%, -50%);

               transform: translate(-50%, -50%);

               left: 50%;

               top: 50%;

          }

          .row {

               display: block;

               font-size: 0;

               margin-bottom: 18px;

          }

          h1,h2 {

               color: #fefefe;

               text-align: center;

               margin: 0 0 40px 0;

          }

          .row label {

               width: 180px;

               color: #fefefe;

               text-transform: uppercase;

               padding-left: 0!important;

          }

          .row input,

          .row textarea {

               background-color: #fefefe;

               width: 280px;

               color: #000000;

          }

          .row textarea {

               resize: none;

          }

          .row label,

          .row input,

          .row textarea {

               vertical-align: top;

               display: inline-block;

               border: 0;

               margin: 0;

               padding: 15px;

               font-size: 15px;

          }

          form button {

               background-color: #16222A;

               width: 250px;

               display: inline-block;

               border: 0;

               padding: 15px;

               color: #fefefe;

               font-size: 15px;

               text-transform: uppercase;

               cursor: pointer;

          }

          form #btnClear {

               background-color: #486980;

          }

          input:focus,

          select:focus,

          textarea:focus,

          button:focus {

               outline: none;

          }

     </style>

</head>

<body>

     <?php

     error_reporting(0);



     $num1 = $_POST['txtFirstNum'];

     $num2 = $_POST['txtSecondNum'];

    

    if(isset($_POST['submit'])) {

      

     $addition = ($num1 + $num2);

     $subtraction = ($num1 - $num2);

     $multiplication = ($num1 * $num2);

     $division = ($num1 / $num2);

              

      }



     if(isset($_POST['clear'])) {

       $num1 = "";

       $num2 = "";

       $addition = "";

       $subtraction = "";

       $multiplication = "";

       $division = "";

      }

    

    ?>  



     <form action="" method="post">

          <h1>Basic Math Operations in PHP</h1>

          <div class="row">

               <label for="txtFirstNum">Give First Number</label>

               <input type="text" name="txtFirstNum" id="txtFirstNum"

                value="<?php echo $num1; ?>" autofocus>>

          </div>

          <div class="row">

               <label for="txtSecondNum">Give Second Number</label>

               <input type="text" name="txtSecondNum" id="txtSecondNum"

               value="<?php echo $num2; ?>">>

          </div>

         

             

           <div class="row">



               <label for="txtAddition">Addition</label>

               <input type="text" name="txtAddition" 

               value="<?php echo $addition; ?>" readonly>

          </div>

          <div class="row">

               <label for="txtSubtraction">Subtraction</label>

               <input type="text" name="txtSubtraction" 

               value="<?php echo $subtraction; ?>" readonly>

          </div>

          <div class="row">

               <label for="txtMultipy">Multiplication</label>

               <input type="text" name="txtMultipy" "

                 value="<?php echo $multiplication; ?>" readonly>

          </div>

          <div class="row">

               <label for="txtSixthNum">Division</label>

               <input type="text" name="txtDivision" id="txtSixthNum"

               value="<?php echo $division; ?>" readonly>

          </div>

              <div classs="row">

               <button type="submit" name="submit" 

               id="btnCompute">Compute</button>

               <button type="submit" name="clear"

                id="btnClear">Clear</button>

          </div>

     </form>

</body>

</html>

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