How can we create a PHP Calculator? By very less coding & following some steps, we can create a basic calculator in PHP. This tutorial is for those people who want to learn PHP & beginner in PHP. If you have good knowledge in PHP you can create this program in less then 10 minutes.
Previously I had shared how to make a calculator with JavaScript? Now at this time, I am sharing the same type of calculator in the PHP platform. Basically, I created this program in PHP If { } statement. The If { } statement of any programming language work like either-or. Know more about PHP If statement.Â
I create this program in PHP & Bootstrap. I used bootstrap because I am lazy little bit, Using bootstrap I saved my almost 2-3 minute. First, I had created a form with method="POST" then I added action with the same name of the program file. I had saved this program named calculator.php So, I had placed action="calculator.php" in the form tag. Example: <form method="post" action="calculator.php">
Then I had created two text input and one option menu using HTML or Bootstrap. Gave the first input name ‘number1‘ and for the second input ‘number2‘. Example: <input name="number1" type="text" /> & gave name for selection section. Example: <select name="operation"> Then gave value for options (i.e. plus, minus ) & submit button. Example: <option value="plus"> & <input name="submit" type="submit" value="Calculate" />
Preview of Calculator Program
Let’s see a preview of this calculator in GIF version. In other words, see how this calculator works.
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Source Code Of Simple PHP Calculator Program.
Now here I am sharing the source code of this basic PHP calculator, Who was still talking about. This is a very small program So, I created just one file for this. I am sure you will fully understand the whole program just looking at source code. Because this code is so simple & clean.
Create a file name ‘calculator.php‘ and put these following code given here below. Just Copy & Paste.
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<!DOCTYPE html> <!-- code by webdevtrick ( https://webdevtrick.com) --> <html> <head> <title>Simple Calculator In PHP | Webdevtrick.com</title> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet"> </head> <body> <div class="container" style="margin-top: 50px"> <?php // If the submit button has been pressed if(isset($_POST['submit'])) { // Check number values if(is_numeric($_POST['number1']) && is_numeric($_POST['number2'])) { // Calculate total if($_POST['operation'] == 'plus') { $total = $_POST['number1'] + $_POST['number2']; } if($_POST['operation'] == 'minus') { $total = $_POST['number1'] - $_POST['number2']; } if($_POST['operation'] == 'multiply') { $total = $_POST['number1'] * $_POST['number2']; } if($_POST['operation'] == 'divided by') { $total = $_POST['number1'] / $_POST['number2']; } // Print total to the browser echo "<h1>{$_POST['number1']} {$_POST['operation']} {$_POST['number2']} equals {$total}</h1>"; } else { // Print error message to the browser echo 'Numeric values are required'; } } // end PHP. Code by webdevtrick.com ?> <!-- Calculator form by webdevtrick.com --> <form method="post" action="calculator.php"> <input name="number1" type="text" class="form-control" style="width: 150px; display: inline" /> <select name="operation"> <option value="plus">Plus</option> <option value="minus">Minus</option> <option value="multiply">Multiply</option> <option value="divided by">Devide</option> </select> <input name="number2" type="text" class="form-control" style="width: 150px; display: inline" /> <input name="submit" type="submit" value="Calculate" class="btn btn-primary" /> </form> </div> </body> </html> |
Now you have successfully created this program. now time to understand this program, look at the code you will definitely understand. I also placed a comment on every section of codes. If you have any doubt or question comment down below.
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please i am a beginner and i just copied the code to my visual studio.. please how do i see the project.. it cant be opened in the browser.. thaanks
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Can you do a calculator that can do a dynamic result for options
THIS IS NOT WORKING MY TEACHER GONNA KILL ME OMG NONONONONO!!!!!!!!!!!!!!!!!
i need assistance in adding some features on my website( PHP)