帮助我在加载页面时制作页面加载程序。我正在做一些贝宝支付系统。当我看到一些页面时，当页面指向贝宝页面时，他们会在页面处理时放置一些加载程序（ajax加载程序），以重定向到"贝宝网关"。我还计划在我的另一个页面加载Ajax加载程序。所以请帮帮我。这是我的密码。
<?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='.$current_url.'">×</a></span>';
echo '<div class="p-price">'.$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';
}
?>
为此，您可以使用javascript方法"setInterval()"在两个或多个进程之间放置一个时间。我不知道你把这个延迟放在哪里，但我把我的代码链接给你，希望它能有所帮助：
<!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：第一个是您的函数，第二个是您希望在每个刻度之间设置的延迟。因此，您对函数方法进行了处理，诀窍是放置一个左勾选事件条件，并调用方法"clearInterval"来停止勾选。
下面是这个代码的工作：
单击按钮可调用函数"loading"。该方法启动包含在"function () {}"代码中的过程。在启动此过程之前，我们会显示等待gif，它可以是加载gif或其他什么。然后，进程在循环中运行，直到出现左勾选条件（if（）调用）。如果我们已经到达进程的末尾，则通过清除间隔参数（通过调用"clearInterval()"方法）中止计时器。
<?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>';
}
}
?>