Question

我没有从第一个循环获取信息到第二个循环，它给出了一个错误，例如：注意：未定义的索引：txtprice 在.. 问题是我无法将if(isset($_POST['getdata']))中的数据导入if(isset($_POST['addto']))以回显并进行计算

<html>
<body>
<form method="post" action="newcal.php">

<table>
<tr>
	<td> Item #: </td>
	<td> <input type=text name= txtitem > <br> </td>
	
	<td>
	</td>
	<td> <fieldset style = "width:60px">
		<input type=submit value = "Get Data" name= getdata>
		<input type=submit value = "Add to Cart" name= addto>
		<input type=submit value = "Get Total" name= gettotal>
		</fieldset>
		</td>
</tr>
</table>
</form>

<?php
$item = (isset($_POST['txtitem']) ? intval($_POST['txtitem']) : null);


	$stuff = array(
			 array("id" => 1,"name" => "Apples","price" => 50 ),
			 array("id" => 2,"name" => "Pineapples","price" => 125 ),
			 array("id" => 3,"name" => "Mango","price" => 35 ),
			 array("id" => 4,"name" => "Banana","price" => 25 ),
			 array("id" => 5,"name" => "Naseberry","price" => 38 ));
			 

			if(isset($_POST['getdata']))
			{
			
				foreach ($stuff as $row) 
				{
					if ($row['id'] == $item) 
					{
					$name = $row['name'];
					$price = $row['price'];
					
					echo "Item Number:&nbsp &nbsp <input type=\"text\" name=\"txtinum\"  VALUE=\"$item\">"."</br>"."</br>";
					
					echo "Name: &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp<input type=\"text\" name=\"txtname\"  VALUE=\"$name\">"."</br>"."</br>";
					
					echo "Price : &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp<input type=\"text\" name=\"txtprice\" VALUE=\"$price\">"."</br>"."</br>";
					
					echo "Quantity: &nbsp &nbsp &nbsp &nbsp &nbsp <input type=\"text\" name=\"txtquant\">"."</br>"."</br>";	

					
					}
				}
				}
				
				
				if(isset($_POST['addto']))
					{
					$quant = isset($_POST['txtquant']);
				$cal = $price * $quant;
	
							echo "<table width='360px' border='1' cellpadding='2'>";
							echo "<tr>";
							echo "<th> Item ID</th>" ;
							echo "<th> Name</th>";
							echo"<th> Price</th>"; 
							echo"<th> Quantity</th>"; 
							echo"<th> Sub Total </th>";
							echo "</tr>";
							echo "<tr>";
							echo "<td> $itemnum </td>";
							echo "<td> $name </td>";
							echo "<td> $price </td>";
							echo "<td> $quant </td>";
							echo "<td>   </td>";
							echo "<tr>";

					}
?>
</body>
</html>

获取循环变量的访问权限

0 个答案: