我正在创建一个PHP表单,用于计算变化中的总金额,如便士,宿舍,硬币和镍币。该代码似乎工作正常,直到我收到第29-32行中的未定义的索引错误。有人能帮助我解决这个问题,并告诉我我做错了什么吗?PHP Undefinded Index
<head>
<title>Fill in the form and I will show the greeting. </title>
<style type="text/css">
h1 {font-family:'Times New Roman'; }
</style>
<body bgcolor="orange">
<form action="Lab6-1.php" method="post" >
<h1>Please enter your coin count and denominations.</h1>
<p>
<h1>Pennies (1 cent):
<input type="text" size="16" maxlength="20" name="pennies" value="<?php echo $_POST['pennies']?>"/></h1>
<h1>Nickels (5 cents):
<input type="text" size="16" maxlength="20" name="nickels" value="<?php echo $_POST['nickels']?>"/></h1>
<h1>Dimes (10 cents):
<input type="text" size="16" maxlength="20" name= "dimes" value="<?php echo $_POST['dimes']?>"/></h1>
<h1> Quarters (25 cents):
<input type="text" size="16" maxlength="20" name= "quarters" value="<?php echo $_POST['quarters']?>"/></h1>
<br /><br />
<input type="submit" value="Calculate Coins" />
<input type="reset" value ="Clear Form" />
<?php
$pennies = $_POST['pennies']*.01;
$nickels = $_POST['nickels']*.05;
$dimes = $_POST['dimes']*.10;
$quarters = $_POST['quarters']*.25;
$total = $pennies + $nickels + $dimes + $quarters;
$money = array ("Quarters" => $quarters, "Dimes"=> $dimes, "Nickels" => $nickels, "Pennies" => $pennies, "Total" => $total);
echo "<table border = \"1\" >";
foreach ($money as $key => $value) {
print("<tr><td> $key </td><td> $value</td> </tr>");
}
echo "</table>";
?>
</p>
</form>
</body>
</html>
可以显示究竟是什么错误你得到 – 2013-02-14 04:11:56
使用'的print_r($ _ POST)'来看看你想说什么,而不是你期待什么。 – Passerby 2013-02-14 04:13:00
但是,如果在设置数组索引之前使用之前未定义的索引错误会上升 – 2013-02-14 04:14:00