Bob's stroe orders put in file and view

$DOCUMENT_ROOT = $_SERVER['DOCUMENT_ROOT'];

$fp = fopen("$DOCUMENT_ROOT/../orders/orders.txt",'w');

$DOCUMENT_ROOT 是脚本所在文件根目录就是www文件夹 ".."是表示根目录的父目录即wamp文件夹是为了后面方便读取

<?php
// creat short variable
$tireqty = $_POST['tireqty'];
$oilqty = $_POST['oilqty'];
$sparkqty = $_POST['sparkqty'];
$address = $_POST['address'];
$DOCUMENT_ROOT = $_SERVER['DOCUMENT_ROOT'];
$date= date('H:i,jS F Y');
?>
<html>
<head>
<title>Bob' Auto Parts - Order Results</title>

</head>
<body>

<h1>Bob' Auto Parts</h1>
<h2>Order Results</h2>
<?php 
    echo"<p>Order processed at ".date('H:i jS F Y')."</p>";
    echo"<p>Your order is follows:</p>";
    //订单总数
    $totalqty = 0;
    $totalqty = $tireqty + $oilqty + $sparkqty;
    //echo "Items order : $totalqty<br/>";
    //订单详细显示
    //先判断订单是否为空，在依次判断每项单独的订单
    if($totalqty == 0){
        echo "<h2>You did not order anything on previous page!</h2><br/>";
    }else{
       if($tireqty > 0){
       echo $tireqty."tires<br/>";
    }
       if($oilqty > 0){
       echo $oilqty."bottle of oil<br/>";
    }
       if($sparkqty > 0){
       echo $sparkqty."spark plugs<br/>";
       }
    }
    
    //订单总数
    $totalamout = 0.00;

    define('TIREPRICE',100);
    define('OILPRICE',10);
    define('SPARKPRICE',4);

    $totalamount = $tireqty*TIREPRICE 
                + $oilqty*OILPRICE
                + $sparkqty*SPARKPRICE;
    //小数点用“.” 千位分割符用“ ”
    $totalamout = number_format($totalamount,2,'.','');

    //关于<p></p>段落与<br/>换行  <p>空白高度 <br/>只是换行 <p>=2个<br/>
    echo "<p>Total of order is: $".$totalamout."<p/>";
    //运送地址
    echo "<p>Address to ship to is ".$address."</p>";

    //先拼接要打印的字符串,tires轮胎,spark plugs 火花塞
    $outputstring = $date."	".$tireqty."tires	".$oilqty."oil	"
    .$sparkqty."spark plugs	$".$totalamount."	".$address."
";
    echo $outputstring;

    //open file for appending
    //这里用了相对路径，但是出现了错误，先用绝对路径
    // @ $fp = fopen("C:wampwwwordersorders.txt","ab");
    $fp = fopen("$DOCUMENT_ROOT/../orders/orders.txt","ab");
     flock($fp,LOCK_EX);

     //人性化错误提示
     if(!$fp){
         echo"<p><strong>Your order could not be processed at this time .
                         please try again later.
         </strong></p></body></html>";
        exit;
     }


    fwrite($fp , $outputstring , strlen($outputstring));
    fclose($fp);

    echo"<p>Order Written</p>";




    //$taxrate = 0.10;  //local tax10%
    //$totalamout = $totalamout*(1+$taxrate);
    //echo "Total include tax :$".number_format($totalamout,2)."<br/>";

?>
</body>

读取文件显示

<?php
$DOCUMENT_ROOT = $_SERVER['DOCUMENT_ROOT'];
?>

<html>

<body>
<?php
$fp = fopen("$DOCUMENT_ROOT/../orders/orders.txt",'rd');

while(!feof($fp)){
$order=fgetS($fp,999);
echo $order."<br/>";
}
?>
</body>
<html>