calculator using PHP program to create simple calculator for addition, subtraction, multiplication and division.
Simple Calculator Using PHP
How to Create a calculator in PHP? – PHP calculator code using switch case & Else-If statement. This is a simple calculator using PHP that can perform the simple arithmetic operations (+, -, * and /).
Operations:
- Addition
- Subtraction
- Multiplication
- Division
HTML Code for Simple Calculator
<h2>PHP Program to Make a Simple Calculator</h2><hr> First Number:<input name="first_number" value=""><br> Second Number:<input name="second_number" value=""><br> <input type="submit" name="calculation" value="+"> <input type="submit" name="calculation" value="-"> <input type="submit" name="calculation" value="x"> <input type="submit" name="calculation" value="/"><br> <br>Result: <input type='text' value="<?php echo $ans; ?>"><br> </form>
PHP Code for Simple Calculator
I am using simple PHP Else-If statement for performing the functions.
<?php
if(isset($_POST['calculation'])){
$nomber1=$_POST['first_number'];
$nomber2=$_POST['second_number'];
$results=$_POST['calculation'];
if($results=="+")
$ans=$nomber1+$nomber2;
else if($results=="-")
$ans=$nomber1-$nomber2;
else if($results=="x")
$ans=$nomber1*$nomber2;
else if($results=="/")
$ans=$nomber1/$nomber2;
}
?>
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Write a simple calculator program in PHP using switch case
using switch case
Full Source code Example for calculator using php
<!DOCTYPE html>
<head>
<title>Simple Calculator Program in PHP - Tutorials Class</title>
</head>
<?php
$first_number = $_POST['first_number'];
$second_number = $_POST['second_number'];
$operator = $_POST['operator'];
$result = '';
if (is_numeric($first_number) && is_numeric($second_number)) {
switch ($operator) {
case "Add":
$result = $first_number + $second_number;
break;
case "Subtract":
$result = $first_number - $second_number;
break;
case "Multiply":
$result = $first_number * $second_number;
break;
case "Divide":
$result = $first_number / $second_number;
}
}
?>
<body>
<div id="calc-cart">
<h2>PHP - Simple Calculator Program</h2>
<form action="" method="post" id="calc-form">
<p>
<input type="number" name="first_number" id="first_number" required="required" value="<?php echo $first_number; ?>" /> <b>First Number</b>
</p>
<p>
<input type="number" name="second_number" id="second_number" required="required" value="<?php echo $second_number; ?>" /> <b>Second Number</b>
</p>
<p>
<input readonly="readonly" name="result" value="<?php echo $result; ?>"> <b>Result</b>
</p>
<input type="submit" name="operator" value="Sum" />
<input type="submit" name="operator" value="Subtract" />
<input type="submit" name="operator" value="Multiply" />
<input type="submit" name="operator" value="Divide" />
</form>
</div>
</body>
</html>
I hope you get an idea about calculator using php.
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