这是php和mysql web开发书中一个例子,目的就是把文件保存的订单信息炸开,用表格显示。我运行时为什么只显示表头,没有表格数据呢。
orders.txt中就是订单信息,用Tab分隔的,已正确读取到$orders中。貌似是后边的for循环中有问题。
Bob's Auto Parts - Customer Orders
Bob's Auto Parts
Customer Orders
<?php
//Read the entire file
//Each order becomes an element in the array
$orders = file("./orders.txt");
//count the number of orders in the array
$number_of_orders = count($orders);
if($number_of_orders = 0) {
echo "<p><strong>No orders pending. Please try again later.</strong></p>";
}
echo "<table border=\"1\">\n";
echo "<tr><th bgcolor=\"#CCCCFF\">Order Date</th>
<th bgcolor=\"#CCCCFF\">Tires</th>
<th bgcolor=\"#CCCCFF\">Oil</th>
<th bgcolor=\"#CCCCFF\">Spark plugs</th>
<th bgcolor=\"#CCCCFF\">Total</th>
<th bgcolor=\"#CCCCFF\">Address</th>
</tr>";
for($i = 0; $i < $number_of_orders; $i++) {
//Split up each line
$line = explode("\t", $orders[$i]);
//keep only the number of items ordered
$line[1] = intval($line[1]);
$line[2] = intval($line[2]);
$line[3] = intval($line[3]);
//output each other
echo "<tr>
<td>".$line[0]."</td>
<td align=\"right\">".$line[1]."</td>
<td align=\"right\">".$line[2]."</td>
<td align=\"right\">".$line[3]."</td>
<td align=\"right\">".$line[4]."</td>
<td>".$line[5]."</td>
</tr>";
}
echo "</table>";
?>