<?php
$menu=array();
$menu[]=("红烧肉",20);
$menu[]=("烤鸡",10);
$menu[]=("鲍鱼",22);
$menu[]=("青菜汤",24);
if(!empty($_POST)){
$select=$menu[$_POST["key"]][0];
$amount_key="amount_".$_POST["key"];
$amount=$_POST[$amount_key];
$price=$amount*$menu[$_POST["key"]][1];
recordFile($select,$amount,$price);
echo "您选择的是:".$select.","."共".$amount."件"."总价"."¥".$price;
}
//定义一个函数来记录生成得到订单文件
function recordFile($select,$amount,$price){//形参可以自定义
$fp=fopen("menu.txt","a+");
fwrite($fp,$select." "."总共".$amount."件"." "."总价为¥".$price."\n");
fclose($fp);
}
?>
//html代码
<form action="" method="post">
<div>大饭店菜单</div>
<?php
foreach($menu as $key => $val){
?>
<div><?=$val[0]?><input type="radio" name="key" value="<?=$key?>">¥<?=$val[1]?>份数为:<input type="text" name="amount_<?=$key?>"></div>
<?php } ?>
</form>