$line[1] = intval($line[1]); //这个这样写是什么意思?
<?php<br /> //create short variable name<br /> $DOCUMENT_ROOT = $_SERVER['DOCUMENT_ROOT'];<br />?><br /><html><br /><head><br /> <title>Bob's Auto Parts - Customer Orders</title><br /></head><br /><body><br /><h1>Bob's Auto Parts</h1><br /><h2>Customer Orders</h2><br /><?php<br /> //Read in the entire file.<br /> //Each order becomes an element in the array<br /> $orders= file("$DOCUMENT_ROOT/../orders/orders.txt");<br /><br /> // count the number of orders in the array<br /> $number_of_orders = count($orders);<br /><br /> if ($number_of_orders == 0) {<br /> echo "<p><strong>No orders pending.<br /> Please try again later.</strong></p>";<br /> }<br /><br /> echo "<table border=\"1\">\n";<br /> echo "<tr><th bgcolor=\"#CCCCFF\">Order Date</th><br /> <th bgcolor=\"#CCCCFF\">Tires</th><br /> <th bgcolor=\"#CCCCFF\">Oil</th><br /> <th bgcolor=\"#CCCCFF\">Spark Plugs</th><br /> <th bgcolor=\"#CCCCFF\">Total</th><br /> <th bgcolor=\"#CCCCFF\">Address</th><br /> <tr>";<br /><br /> for ($i=0; $i<$number_of_orders; $i++) {<br /> //split up each line<br /> $line = explode("\t", $orders[$i]);<br /><br /> // keep only the number of items ordered<br /> $line[1] = intval($line[1]); <br /> $line[2] = intval($line[2]);<br /> $line[3] = intval($line[3]);<br /><br /> // output each order<br /> echo "<tr><br /> <td>".$line[0]."</td><br /> <td align=\"right\">".$line[1]."</td><br /> <td align=\"right\">".$line[2]."</td><br /> <td align=\"right\">".$line[3]."</td><br /> <td align=\"right\">".$line[4]."</td><br /> <td>".$line[5]."</td><br /> </tr>";<br /> }<br /><br /> echo "</table>";<br />?><br /></body><br /></html><br />
