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PHP:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>www.tasarimkodlama.com- PHP Örnekleri</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">
</head>
<body>
<div class="container">
<form action="<?=$_SERVER['PHP_SELF']?>" method="post">
<div class="form-group">
<label for="sayi1">Sayı 1</label>
<input type="text" class="form-control" name="sayi1">
</div>
<div class="form-group">
<label for="sayi2">Sayı 2</label>
<input type="text" class="form-control" name="sayi2">
</div>
<div class="form-group">
<label for="secim">İşlem Seçin</label>
<select name="secim" class="form-control">
<option value="+">TOPLA</option>
<option value="-">FARK</option>
<option value="*">ÇARPIM</option>
<option value="/">BÖLÜM</option>
</select>
</div>
<button type="submit" name="kontrol" class="btn btn-default" >ÇALIŞTIR</button>
</form>
</div>
<!-- PHP KODLARI -->
<div class="container">
<table class="table table-striped">
<?php
if(isset($_POST["kontrol"]))//kontrol adında bir form nesnesi var mı kontrolü yapılıyor
{
$sayi1=$_POST["sayi1"];
$sayi2=$_POST["sayi2"];
$secim=$_POST["secim"];
$sonuc=0;
if($secim == '+')
{
$sonuc=$sayi1+$sayi2;
}
elseif($secim == '-')
{
$sonuc=$sayi1-$sayi2;
}
elseif($secim == '*')
{
$sonuc=$sayi1*$sayi2;
}
elseif($secim == '/')
{
$sonuc=$sayi1/$sayi2;
}
echo "<h1 class='text-info'>$sonuc</h1>";
}
?>
</table>
</div>
</body>
</html>
