$line[1] = intval($line[1]); //这个这样写是什么意思?
<?php
//create short variable name
$DOCUMENT_ROOT = $_SERVER['DOCUMENT_ROOT'];
?>
<html>
<head>
<title>Bob's Auto Parts - Customer Orders</title>
</head>
<body>
<h1>Bob's Auto Parts</h1>
<h2>Customer Orders</h2>
<?php
//Read in the entire file.
//Each order becomes an element in the array
$orders= file("$DOCUMENT_ROOT/../orders/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 order
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>";
?>
</body>
</html>
intval() 变量转成整数类型
$line[1] = intval($line[1]);
$line[2] = intval($line[2]);
$line[3] = intval($line[3]);
转化成整数类型的变量重新组合数组$line
你也可以这样,重新赋值给变量
$line_a = intval($line[1]);
$line_b = intval($line[2]);
$line_c = intval($line[3]);
那么你的模板显示，对应的需要变动。
