我正在为学校做一个项目。截止日期是明天。当 url 为 index.php?category=nieuwBinnen&product=Belair+X ch 时，我想更改 body 标签并在产品页面上添加背景图片
我怎样才能简单地实现这一点。我尝试了 if isset 方法，但没有成功。您可以在以下网址查看该网站：http ://alisgfx.com/lomo/ 感谢您的帮助。
阿里
索引.php
# geef de HTML code voor het openen van de pagina weer
htmlOpenen('Titel van de website');
# toon de header
toonHeader();
include 'menu.php';
?>
<?php
if (isset($_GET['category']) && isset($_GET['product']) && isset($$_GET['category'])){ //display product if provided
$category = $$_GET['category'];
$product = $_GET['product'];
$error_msg = 1; //sets a basic error catcher in case product does not exist
foreach ($category as $item) {
if ($item['naam'] == $product) {
echo '
<section>
<article class="product">
<h2 class="item_name">'.$item['naam'].'</h2>
<div id="image">'.$item['foto'].'</div>
<p>'.$item['video'].'</p>
<p>
'.$item['fotos'].'
</p>
</article>
';
echo '
<article class="product simpleCart_shelfItem">
<div id="slider3">
<ul class="pager">
<li><a href="" class="pagenum active" rel="0">Info</a></li>
<li><a href="" class="pagenum" rel="1">Reviews</a></li>
<li><a href="" class="pagenum" rel="2">Extra\'s</a></li>
</ul>
<div class="viewport">
<ul class="overview">
<li class="page"><p> '.$item['info'].' <hr />'.$item['prijs'].'Beschikbaarheid: '.$item['beschik'].' <br /><br />Aantal: <input type="text" value="1" class="item_Quantity"></p></li>
<li class="page"><p>'.$item['reviews'].'</p></li>
<li class="page"><p>'.$item['extras'].'</p></li>
</ul>
</div>
</div>
<h2 class="item_name hide"> '.$item['naam'].' </h2>
<p class="hide">'.$item['thumb'].'</p>
<a class="item_add" href="javascript:;"> Plaats product <br />in je winkelmandje </a>
</article>
';
echo '
<article class="product box-shadow">
<p>Met deze camera<br /> kun je zulke foto\'s<br /> maken</p>
<div id="slider4">
<a class="buttons prev" href="#">left</a>
<div class="viewport">
<ul class="overview">
'.$item['upload'].'
</ul>
</div>
<a class="buttons next" href="#">right</a>
</div>
<!-- <form action="" method="post">
<input type="file" name="bestand"><br>
<input type="submit" name="submit" value="Upload foto">
</form> -->
<a class="upload" href="upload">Upload je<br /> eigen foto\'s</a>
</article>
<article class="product">
<p>filmrolletje</p>
</article>
</section>
';
// echo $item['prijs']."<br/>";
// echo $item['product']."<br/>";
// echo $item['info']."<br/>";
$error_msg = 0;
}
}
if ($error_msg){ //basic error message in case product does not exist
echo 'The selected product no longer exists';
}
}
else{ //displays all product if specific product not given
?>
<!-- producten carousel -->
<section class="carousel">
<div class="banner"><img src="img/nieuw.jpg"></div>
<div id="slider1">
<a class="buttons prev" href="#">left</a>
<div class="viewport">
<ul class="overview">
<?php
foreach($nieuwBinnen as $new) {
echo '
<li>
<a href="index.php?category=nieuwBinnen&product='.urlencode($new['naam']).'">
<p>'.$new['product'].'</p>
<h2>'.$new['naam'].'</h2>
</a>
</li>
';
}
?>
</ul>
</div>
<a class="buttons next" href="#">right</a>
</div>
</section>
<!-- producten carousel -->
<section class="carousel">
<div class="banner"><img src="img/best.jpg"></div>
<div id="slider1">
<a class="buttons prev" href="#">left</a>
<div class="viewport">
<ul class="overview">
<?php
foreach($bestSellers as $best) {
echo '
<li>
<a href="index.php?category=bestSellers&product='.urlencode($best['naam']).'">
<p>'.$best['product'].'</p>
<h2>'.$best['naam'].'</h2>
</a>
</li>
';
}
?>
</ul>
</div>
<a class="buttons next" href="#">right</a>
</div>
</section>
<?php
}
include 'footer.php';
?>
inc.template.inc.php
<?php
# Public: Echo de HTML code voor het openen van de pagina
#
# $titel - Een tekst die tussen de <title> en </title> tags wordt geplaatst
#
# Examples:
#
# htmlOpenen('pagina titel');
# # => geeft onderstaande html weer
function htmlOpenen($titel){
# Geef de HTML openen code weer
echo '<!DOCTYPE html>
<!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]-->
<!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8"> <![endif]-->
<!--[if IE 8]> <html class="no-js lt-ie9"> <![endif]-->
<!--[if gt IE 8]><!--> <html class="no-js"> <!--<![endif]-->
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>Lomography</title>
<meta name="description" content="">
<meta name="viewport" content="width=device-width">
<!-- Place favicon.ico and apple-touch-icon.png in the root directory -->
<link rel="stylesheet" href="css/normalize.css">
<link rel="stylesheet" href="css/main.css">
<link rel="stylesheet" href="css/jquery-ui.css">
<link rel="stylesheet" href="./fancybox/source/jquery.fancybox.css">
<script src="js/vendor/modernizr-2.6.2.min.js"></script>
</head>
<body>
<!--[if lt IE 7]>
<p class="chromeframe">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> or <a href="http://www.google.com/chromeframe/?redirect=true">activate Google Chrome Frame</a> to improve your experience.</p>
<![endif]-->
<section id="container" class="clearfix">
';
}
function htmlOpenenCart($titel){
# Geef de HTML openen code weer
echo '<!DOCTYPE html>
<!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]-->
<!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8"> <![endif]-->
<!--[if IE 8]> <html class="no-js lt-ie9"> <![endif]-->
<!--[if gt IE 8]><!--> <html class="no-js"> <!--<![endif]-->
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>Lomography</title>
<meta name="description" content="">
<meta name="viewport" content="width=device-width">
<!-- Place favicon.ico and apple-touch-icon.png in the root directory -->
<link rel="stylesheet" href="css/normalize.css">
<link rel="stylesheet" href="css/main.css">
<link rel="stylesheet" href="css/jquery-ui-cart.css">
<link rel="stylesheet" href="./fancybox/source/jquery.fancybox.css">
<script src="js/vendor/modernizr-2.6.2.min.js"></script>
</head>
<body>
<!--[if lt IE 7]>
<p class="chromeframe">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> or <a href="http://www.google.com/chromeframe/?redirect=true">activate Google Chrome Frame</a> to improve your experience.</p>
<![endif]-->
<section id="container" class="clearfix">
';
}
function toonHeader() {
echo '
<header>
<a id="logo" href="index.php"><img src="img/logo.png" alt="Lomography Shop"></a>
<nav id="mainNavigation">
<ul>
<li><a href="inloggen.php">inloggen</a></li>
<li><a href="registreren.php">registreren</a></li>
<li><a href="over-ons.php">over ons</a></li>
</ul>
</nav>
<div class="cartInfo"><span class="simpleCart_quantity"></span> items</div>
<div id="cartPopover">
<div id="triangle">▲</div>
<div class="simpleCart_items"></div>
<div id="cartData" class="clearfix">
<div class="left"><strong>Items: </strong><span class="simpleCart_quantity"></span></div>
<div class="right"><strong>Total: </strong><span class="simpleCart_total"></span></div>
</div>
<div id="popoverButtons" class="clearfix">
<a href="cart.php?stap=1" class="hudbtn left">View</a>
<!-- <a href="javascript:;" class="simpleCart_checkout hudbtn primary right">Checkout</a> -->
</div>
</div><!--End #cartPopover-->
<div id="zoeken">
<form method="get" action="/search" id="search">
<input name="q" type="text" size="40" placeholder="Search..." />
</form>
</div>
</header>
';
}
?>