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Calculator with PHP
In this post is about creating a basic calculator in PHP! This is code: (*I didn't use JavaScript and CSS)
<!DOCTYPE html>
<html lang="az">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Calculator in PHP | xaliddev_</title>
</head>
<body>
<form method="Post" action="index.php">
A <input type="number" name="a" id="a"><br>
B <input type="number" name="b" id="b"><br>
Operation <select name="operation" id="operation">
<option value="+">Plus</option>
<option value="-">Minus</option>
<option value="*">Multiply</option>
<option value="/">Divide</option>
<option value="%">Mod</option>
</select><br>
<input type="submit" value="Calculate">
</form>
<?php
if($_POST)
{
$a=$_POST["a"];
$b=$_POST["b"];
$o=$_POST["operation"];
//echo "Post";
if($o=='+')
{
//printf("%d + %d = %d",$a,$b,$a+$b);
$c=$a+$b;
}
if($o=='-')
{
$c=$a-$b;
}
if($o=='*')
{
$c=$a*$b;
}
if($o=='/')
{
$c=$a/$b;
}
if($o=='%')
{
$c=$a%$b;
}
echo $a." ".$o." ".$b." = ".$c;
}
?>
</body>
</html>
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