使用PHP制作计算器2

来源：互联网发布：苏州java软件开发招聘编辑：程序博客网时间：2024/06/06 03:22

<?php
/**
* Created by PhpStorm.
* User: admin
* Date: 2017/5/2
* Time: 23:18
*/
function ac($x,$y,$opt='1'){
switch($opt){
case '1':
$a=$x+$y;
break;
case '2':
$a=$x-$y;
break;
case '3':
$a=$x*$y;
break;
case '4':
$a=$x/$y;
break;
}
return $a;
}
$num1=$_GET['num1'];
$num2=$_GET['num2'];
$opt=$_GET['opt'];
$a=ac($num1,$num2,$opt);
?>
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>计算器</title>
</head>
<body>
<form action="jisuanqi.php" method="get">
<input type="text" name="num1" value="<?php echo $num1 ?>"/>
<select name="opt">
<option value="1" <?php echo $opt=='1'?'selected':'' ?> >+</option>
<option value="2" <?php echo $opt=='2'?'selected':'' ?>>-</option>
<option value="3" <?php echo $opt=='3'?'selected':'' ?>>×</option>
<option value="4" <?php echo $opt=='4'?'selected':'' ?>>÷</option>
</select>
<input type="text" name="num2" value="<?php echo $num2 ?>"/>
=
<input type="text" name="num3" value="<?php echo $a ?>" />
<button>开始计算</button>
</form>
</body>
</html>

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