Question

帮助我们在页面加载时制作页面加载器。我正在做一些paypal支付系统。当我看一些页面时，当页面指向paypal页面时，他们会在页面处理时放置一些加载器（ajax loader）以重定向到＆＃34; Paypal网关＆＃34;。我还计划在他们重新加载时将一些Ajax加载器放在我的其他页面中。所以请帮助我们。这是我的代码。

<?php
            $current_url = base64_encode($url='http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);

                if(isset($_POST['checkoutnow'])){
                    header('Location: checkout_now1.php');
                }
                if(isset($_SESSION["products"])){
                    $total = 0;
                    echo '<ol>';
                    echo '<form action="paypal-express-checkout/process.php" method="POST">';
                    $cart_items = 0;

                        foreach ($_SESSION["products"] as $cart_itm)
    {
       $product_code = $cart_itm["code"];
       $results = $mysqli->query("SELECT product_name,product_desc, price FROM products WHERE product_code='$product_code' LIMIT 1");
       $obj = $results->fetch_object();

        echo '<li class="cart-itm">';
        echo '<span class="remove-itm"><a href="cart_update.php?removep='.$cart_itm["code"].'&return_url='.$current_url.'">&times;</a></span>';
        echo '<div class="p-price">'.$currency.$obj->price.'</div>';
        echo '<div class="product-info">';
        echo '<h3>'.$obj->product_name.' (Code :'.$product_code.')</h3> ';
        echo '<div class="p-qty">Qty : '.$cart_itm["qty"].'</div>';
        echo '<div>'.$obj->product_desc.'</div>';
        echo '</div>';
        echo '</li>';
        $subtotal = ($cart_itm["price"]*$cart_itm["qty"]);
        $total = ($total + $subtotal);

        echo '<input type="hidden" name="item_name['.$cart_items.']" value="'.$obj->product_name.'" />';
        echo '<input type="hidden" name="item_code['.$cart_items.']" value="'.$product_code.'" />';
        echo '<input type="hidden" name="item_desc['.$cart_items.']" value="'.$obj->product_desc.'" />';
        echo '<input type="hidden" name="item_qty['.$cart_items.']" value="'.$cart_itm["qty"].'" />';
        $cart_items ++;

                        }
                    echo '</ol>';
                    echo '<strong>Total: '.$currency.$total.'</strong><br />';

                    echo '<center>
                            <div id="check_out">
                                <a href="checkout_now1.php"><button>Check Out with US</button></a><br />OR<br />
                                <div class="paypal-button"><input type="image" src="https://www.paypal.com/en_US/i/btn/btn_xpressCheckoutsm.gif"></div>
                            </center>
                            </div>';
                                echo '</form>';
                }else{
                    echo 'Your Cart is Empty<br />Go to <a href="index.php">Home</a> And Order';

                }

        ?>

Answer 1

为此，您可以使用javascript方法“setInterval()”在两个或更多进程之间设置时间。我没有告诉你这个延迟的条件在哪里，但是我将你的代码链接起来并希望它有所帮助：

<!DOCTYPE html>
<html>
    <head>
        <meta charset = "utf-8" />
        <title> title-page </title>
    </head>
    <body>
        <script type = "text/javascript">
            function loading() {
                var miliSecTime = 1000; // 1 sec time between each process for example
                document.getElementById("waitDiv").InnerHtml = "<img src = 'wait.gif' />";
                var timer = setInterval(function () {
                        // BEGIN : Your process

                        // END : Your process

                        // Condition to abort the process
                        // Likely when you want to stop
                        // the waiting view
                        if (leftLoading_condition) {
                            clearInterval(timer);
                            document.getElementById("waitDiv").innerHTML = ""; // Hidding the wait view
                        }
                    },
                    miliSecTime
                );
            }
        </script>
        <!-- This is where you want to show you wait gif -->
        <div id = "waitDiv">

        </div>
        <input type = "button" onClick = "loading()" />
    </body>
</html>

“setInterval()”函数有两个参数：第一个是你的功能，第二个是你想要在每个勾号之间放置的延迟。所以你在函数方法中进行了一个处理，诀窍就是设置一个左勾选事件条件，调用方法“clearInterval”将停止勾选。

所以这是这段代码的工作：

单击按钮调用“加载”功能。该方法启动包含在“function () {}”代码中的过程。在启动这个过程之前，我们展示了wait gif，它可以是一个加载gif或者其他什么。然后，进程循环运行，直到左标记条件（if（）调用）。如果我们到达流程结束，则通过清除间隔参数（通过调用“clearInterval()”方法）中止计时器。

Answer 2

<?php
session_start();
include_once("../config.php");
include_once("paypal.class.php");

$paypalmode = ($PayPalMode=='sandbox') ? '.sandbox' : '';

if($_POST) //Post Data received from product list page.
{
//Other important variables like tax, shipping cost
$TotalTaxAmount     = 2.58;  //Sum of tax for all items in this order. 
$HandalingCost      = 2.00;  //Handling cost for this order.
$InsuranceCost      = 1.00;  //shipping insurance cost for this order.
$ShippinDiscount    = -3.00; //Shipping discount for this order. Specify this as negative number.
$ShippinCost        = 3.00; //Although you may change the value later, try to pass in a shipping amount that is reasonably accurate.

//we need 4 variables from product page Item Name, Item Price, Item Number and Item Quantity.
//Please Note : People can manipulate hidden field amounts in form,
//In practical world you must fetch actual price from database using item id. 
//eg : $ItemPrice = $mysqli->query("SELECT item_price FROM products WHERE id = Product_Number");
$paypal_data ='';
$ItemTotalPrice = 0;

foreach($_POST['item_name'] as $key=>$itmname)
{
    $product_code   = filter_var($_POST['item_code'][$key], FILTER_SANITIZE_STRING); 

    $results = $mysqli->query("SELECT product_name, product_desc, price FROM products WHERE product_code='$product_code' LIMIT 1");
    $obj = $results->fetch_object();

    $paypal_data .= '&L_PAYMENTREQUEST_0_NAME'.$key.'='.urlencode($obj->product_name);
    $paypal_data .= '&L_PAYMENTREQUEST_0_NUMBER'.$key.'='.urlencode($_POST['item_code'][$key]);
    $paypal_data .= '&L_PAYMENTREQUEST_0_AMT'.$key.'='.urlencode($obj->price);      
    $paypal_data .= '&L_PAYMENTREQUEST_0_QTY'.$key.'='. urlencode($_POST['item_qty'][$key]);

    // item price X quantity
    $subtotal = ($obj->price*$_POST['item_qty'][$key]);

    //total price
    $ItemTotalPrice = $ItemTotalPrice + $subtotal;

    //create items for session
    $paypal_product['items'][] = array('itm_name'=>$obj->product_name,
                                        'itm_price'=>$obj->price,
                                        'itm_code'=>$_POST['item_code'][$key], 
                                        'itm_qty'=>$_POST['item_qty'][$key]
                                        );
}

//Grand total including all tax, insurance, shipping cost and discount
$GrandTotal = ($ItemTotalPrice + $TotalTaxAmount + $HandalingCost + $InsuranceCost + $ShippinCost + $ShippinDiscount);


$paypal_product['assets'] = array('tax_total'=>$TotalTaxAmount, 
                            'handaling_cost'=>$HandalingCost, 
                            'insurance_cost'=>$InsuranceCost,
                            'shippin_discount'=>$ShippinDiscount,
                            'shippin_cost'=>$ShippinCost,
                            'grand_total'=>$GrandTotal);

//create session array for later use
$_SESSION["paypal_products"] = $paypal_product;

//Parameters for SetExpressCheckout, which will be sent to PayPal
$padata =   '&METHOD=SetExpressCheckout'.
            '&RETURNURL='.urlencode($PayPalReturnURL ).
            '&CANCELURL='.urlencode($PayPalCancelURL).
            '&PAYMENTREQUEST_0_PAYMENTACTION='.urlencode("SALE").
            $paypal_data.               
            '&NOSHIPPING=0'. //set 1 to hide buyer's shipping address, in-case products that does not require shipping
            '&PAYMENTREQUEST_0_ITEMAMT='.urlencode($ItemTotalPrice).
            '&PAYMENTREQUEST_0_TAXAMT='.urlencode($TotalTaxAmount).
            '&PAYMENTREQUEST_0_SHIPPINGAMT='.urlencode($ShippinCost).
            '&PAYMENTREQUEST_0_HANDLINGAMT='.urlencode($HandalingCost).
            '&PAYMENTREQUEST_0_SHIPDISCAMT='.urlencode($ShippinDiscount).
            '&PAYMENTREQUEST_0_INSURANCEAMT='.urlencode($InsuranceCost).
            '&PAYMENTREQUEST_0_AMT='.urlencode($GrandTotal).
            '&PAYMENTREQUEST_0_CURRENCYCODE='.urlencode($PayPalCurrencyCode).
            '&LOCALECODE=GB'. //PayPal pages to match the language on your website.
            '&LOGOIMG='. //site logo
            '&CARTBORDERCOLOR=FFFFFF'. //border color of cart
            '&ALLOWNOTE=1';

    //We need to execute the "SetExpressCheckOut" method to obtain paypal token
    $paypal= new MyPayPal();
    $httpParsedResponseAr = $paypal->PPHttpPost('SetExpressCheckout', $padata, $PayPalApiUsername, $PayPalApiPassword, $PayPalApiSignature, $PayPalMode);

    //Respond according to message we receive from Paypal
    if("SUCCESS" == strtoupper($httpParsedResponseAr["ACK"]) || "SUCCESSWITHWARNING" == strtoupper($httpParsedResponseAr["ACK"]))
    {
            //Redirect user to PayPal store with Token received.
            $paypalurl ='https://www'.$paypalmode.'.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token='.$httpParsedResponseAr["TOKEN"].'';
            header('Location: '.$paypalurl);
    }
    else
    {
        //Show error message
        echo '<div style="color:red"><b>Error : </b>'.urldecode($httpParsedResponseAr["L_LONGMESSAGE0"]).'</div>';
        echo '<pre>';
        print_r($httpParsedResponseAr);
        echo '</pre>';
    }

}

//Paypal redirects back to this page using ReturnURL, We should receive TOKEN and Payer ID
if(isset($_GET["token"]) && isset($_GET["PayerID"]))
{
//we will be using these two variables to execute the "DoExpressCheckoutPayment"
//Note: we haven't received any payment yet.

$token = $_GET["token"];
$payer_id = $_GET["PayerID"];

//get session variables
$paypal_product = $_SESSION["paypal_products"];
$paypal_data = '';
$ItemTotalPrice = 0;

foreach($paypal_product['items'] as $key=>$p_item)
{       
    $paypal_data .= '&L_PAYMENTREQUEST_0_QTY'.$key.'='. urlencode($p_item['itm_qty']);
    $paypal_data .= '&L_PAYMENTREQUEST_0_AMT'.$key.'='.urlencode($p_item['itm_price']);
    $paypal_data .= '&L_PAYMENTREQUEST_0_NAME'.$key.'='.urlencode($p_item['itm_name']);
    $paypal_data .= '&L_PAYMENTREQUEST_0_NUMBER'.$key.'='.urlencode($p_item['itm_code']);

    // item price X quantity
    $subtotal = ($p_item['itm_price']*$p_item['itm_qty']);

    //total price
    $ItemTotalPrice = ($ItemTotalPrice + $subtotal);
}

$padata =   '&TOKEN='.urlencode($token).
            '&PAYERID='.urlencode($payer_id).
            '&PAYMENTREQUEST_0_PAYMENTACTION='.urlencode("SALE").
            $paypal_data.
            '&PAYMENTREQUEST_0_ITEMAMT='.urlencode($ItemTotalPrice).
            '&PAYMENTREQUEST_0_TAXAMT='.urlencode($paypal_product['assets']['tax_total']).
            '&PAYMENTREQUEST_0_SHIPPINGAMT='.urlencode($paypal_product['assets']['shippin_cost']).
            '&PAYMENTREQUEST_0_HANDLINGAMT='.urlencode($paypal_product['assets']['handaling_cost']).
            '&PAYMENTREQUEST_0_SHIPDISCAMT='.urlencode($paypal_product['assets']['shippin_discount']).
            '&PAYMENTREQUEST_0_INSURANCEAMT='.urlencode($paypal_product['assets']['insurance_cost']).
            '&PAYMENTREQUEST_0_AMT='.urlencode($paypal_product['assets']['grand_total']).
            '&PAYMENTREQUEST_0_CURRENCYCODE='.urlencode($PayPalCurrencyCode);

//We need to execute the "DoExpressCheckoutPayment" at this point to Receive payment from user.
$paypal= new MyPayPal();
$httpParsedResponseAr = $paypal->PPHttpPost('DoExpressCheckoutPayment', $padata, $PayPalApiUsername, $PayPalApiPassword, $PayPalApiSignature, $PayPalMode);

//Check if everything went ok..
if("SUCCESS" == strtoupper($httpParsedResponseAr["ACK"]) || "SUCCESSWITHWARNING" == strtoupper($httpParsedResponseAr["ACK"])) 
{

        echo '<h2>Success</h2>';
        echo 'Your Transaction ID : '.urldecode($httpParsedResponseAr["PAYMENTINFO_0_TRANSACTIONID"]);

            /*
            //Sometimes Payment are kept pending even when transaction is complete. 
            //hence we need to notify user about it and ask him manually approve the transiction
            */

            if('Completed' == $httpParsedResponseAr["PAYMENTINFO_0_PAYMENTSTATUS"])
            {
                echo '<div style="color:green">Payment Received! Your product will be sent to you very soon!</div>';
            }
            elseif('Pending' == $httpParsedResponseAr["PAYMENTINFO_0_PAYMENTSTATUS"])
            {
                echo '<div style="color:red">Transaction Complete, but payment is still pending! '.
                'You need to manually authorize this payment in your <a target="_new" href="http://www.paypal.com">Paypal Account</a></div>';
            }

            // we can retrive transection details using either GetTransactionDetails or GetExpressCheckoutDetails
            // GetTransactionDetails requires a Transaction ID, and GetExpressCheckoutDetails requires Token returned by SetExpressCheckOut
            $padata =   '&TOKEN='.urlencode($token);
            $paypal= new MyPayPal();
            $httpParsedResponseAr = $paypal->PPHttpPost('GetExpressCheckoutDetails', $padata, $PayPalApiUsername, $PayPalApiPassword, $PayPalApiSignature, $PayPalMode);

            if("SUCCESS" == strtoupper($httpParsedResponseAr["ACK"]) || "SUCCESSWITHWARNING" == strtoupper($httpParsedResponseAr["ACK"])) 
            {

                echo '<br /><b>Stuff to store in database :</b><br />';

                echo '<pre>';
                /*
                #### SAVE BUYER INFORMATION IN DATABASE ###
                //see (http://www.sanwebe.com/2013/03/basic-php-mysqli-usage) for mysqli usage
                //use urldecode() to decode url encoded strings.

                $buyerName = urldecode($httpParsedResponseAr["FIRSTNAME"]).' '.urldecode($httpParsedResponseAr["LASTNAME"]);
                $buyerEmail = urldecode($httpParsedResponseAr["EMAIL"]);

                //Open a new connection to the MySQL server
                $mysqli = new mysqli('host','username','password','database_name');

                //Output any connection error
                if ($mysqli->connect_error) {
                    die('Error : ('. $mysqli->connect_errno .') '. $mysqli->connect_error);
                }       

                $insert_row = $mysqli->query("INSERT INTO BuyerTable 
                (BuyerName,BuyerEmail,TransactionID,ItemName,ItemNumber, ItemAmount,ItemQTY)
                VALUES ('$buyerName','$buyerEmail','$transactionID','$ItemName',$ItemNumber, $ItemTotalPrice,$ItemQTY)");

                if($insert_row){
                    print 'Success! ID of last inserted record is : ' .$mysqli->insert_id .'<br />'; 
                }else{
                    die('Error : ('. $mysqli->errno .') '. $mysqli->error);
                }

                */

                echo '<pre>';
                print_r($httpParsedResponseAr);
                echo '</pre>';
            } else  {
                echo '<div style="color:red"><b>GetTransactionDetails failed:</b>'.urldecode($httpParsedResponseAr["L_LONGMESSAGE0"]).'</div>';
                echo '<pre>';
                print_r($httpParsedResponseAr);
                echo '</pre>';

            }

}else{
        echo '<div style="color:red"><b>Error : </b>'.urldecode($httpParsedResponseAr["L_LONGMESSAGE0"]).'</div>';
        echo '<pre>';
        print_r($httpParsedResponseAr);
        echo '</pre>';
}
}
?>

如何在PHP中加载页面时放置ajax-loader

2 个答案: