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- Theory
- Theory
- Comments
What are variables in PHP
Now it’s time for a new assignment! The boss wants the product page to display information about different products.
Currently a component with product information is included on the product.php page. There is no actual data in this component yet. Our goal is to add this data in such a way that the data changes automatically when the user selects a particular product in the catalog. To do this, we need to add variable data to the components/product_info.php template.
Variables exist in all programming languages for the purpose of working with variable data.
Variables provide a way to save information under a specific name.
To create a variable, you need to declare it, that is, to assign it a name. For example, it looks like this:
$product; // We declared the variable $productThe variable name must begin with the dollar sign $. The next character may be either a letter or an underscore. The name should be human-readable and describe what is contained in the variable.
In order to save certain information in a variable, you need to assign it the following value:
$product = 'chandelier'; // We assigned the value 'chandelier' to the variable $product.Declare the variable $title and save the product name to it in the product.php script.
Files
<section class="intro">
<div class="container">
<h1 class="intro-title">Comfort and coziness in <b>your</b> apartment</h1>
<p>A variety of home furnishings with delivery worldwide</p>
</div>
</section>
<section class="popular-products">
<div class="container">
<h2 class="visually-hidden">Top sellers</h2>
<ul class="products-list">
<li>
<a class="product-card" href="product.php?product_id=1">
<h3>Mseyulida</h3>
<p>floor lamp</p>
<span class="price"><del>$289</del> $288</span>
<img src="img/item-mseyulida.jpg" width="156" height="120" alt=""Mseyulida" floor lamp">
</a>
</li>
<li>
<a class="product-card product-card-new" href="product.php?product_id=2">
<h3>Rmaeribi</h3>
<p>three-seat sofa</p>
<span class="price">$5870</span>
<img src="img/item-rmaeribi.jpg" width="156" height="120" alt=" "Rmaeribi" three-seat sofa">
</a>
</li>
<li>
<a class="product-card" href="product.php?product_id=3">
<h3>Bletub</h3>
<p>ceiling chandelier</p>
<span class="price">$1360</span>
<img src="img/item-bletub.jpg" width="156" height="120" alt=""Bletub" ceiling chandelier">
</a>
</li>
</ul>
</div>
</section>
<section class="features">
<div class="container">
<h2 class="features-title">What <b>sets</b> us apart from our competitors?</h2>
<ul class="features-list">
<li class="feature-unique">Our unique products are unlike anything else on the market</li>
<li class="feature-organic">We use only natural materials</li>
<li class="feature-protected">Our furniture is resistant to cat teeth and claws</li>
</ul>
</div>
</section>
<footer class="site-footer">
<div class="container">
<p class="copyright">© Muffin, 2019</p>
<ul class="navigation-list">
<li><a href="catalog.php">Catalog</a></li>
<li><a href="delivery.html">Delivery</a></li>
<li><a href="contacts.html">Contact us</a></li>
</ul>
<ul class="social-list">
<li>
<a class="social-link-twitter" href="https://twitter.com">
<span class="visually-hidden">Twitter</span>
</a>
</li>
<li>
<a class="social-link-instagram" href="https://instagram.com">
<span class="visually-hidden">Instagram</span>
</a>
</li>
<li>
<a class="social-link-facebook" href="https://facebook.com">
<span class="visually-hidden">Facebook</span>
</a>
</li>
</ul>
</div>
</footer>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Online store for home furnishings</title>
<link href="style.css" rel="stylesheet">
</head>
<body>
<header class="site-header">
<nav class="site-navigation">
<a class="logo-link" href="index.php">
<img src="img/logo-full.svg" width="62" height="17" alt="Gloevk store logo">
</a>
<ul class="navigation-list">
<li><a href="catalog.php">Catalog</a></li>
<li><a href="delivery.html">Delivery</a></li>
<li><a href="contacts.html">Contact us</a></li>
<li><a href="blog.html">Blog</a></li>
</ul>
</nav>
</header>
<?php
require('components/header.php');
require('components/company_info.php');
require('components/footer.php');
<?php
require('components/header.php');
require('components/products_list.php');
require('components/footer.php');
?>
<section class="catalog">
<div class="container">
<h1 class="catalog-title">Product catalog</h1>
<ul class="products-list">
<li>
<a class="product-card" href="product.php?product_id=1">
<h3>Mseyulida</h3>
<p>floor lamp</p>
<span class="price"><del>$289</del> $288</span>
<img src="img/item-mseyulida.jpg" width="156" height="120" alt=""Mseyulida" floor lamp">
</a>
</li>
<li>
<a class="product-card product-card-new" href="product.php?product_id=2">
<h3>Rmaeribi</h3>
<p>three-seat sofa</p>
<span class="price">$5870</span>
<img src="img/item-rmaeribi.jpg" width="156" height="120" alt=" "Rmaeribi" three-seat sofa">
</a>
</li>
<li>
<a class="product-card" href="product.php?product_id=3">
<h3>Bletub</h3>
<p>ceiling chandelier</p>
<span class="price">$1360</span>
<img src="img/item-bletub.jpg" width="156" height="120" alt="Bletub ceiling chandelier">
</a>
</li>
<li>
<a class="product-card" href="product.php?product_id=4">
<h3>Nnulm</h3>
<p>desk</p>
<span class="price">$6832</span>
<img src="img/item-nnulm.jpg" width="156" height="120" alt=""Nnulm" computer desk">
</a>
</li>
<li>
<a class="product-card" href="product.php?product_id=5">
<h3>Asusmer</h3>
<p>hanging bed</p>
<span class="price"><del>$21320</del>$19320</span>
<img src="img/item-asusmer.jpg" width="156" height="120" alt=""Asusmer" hanging bed">
</a>
</li>
<li>
<a class="product-card product-card-new" href="product.php?product_id=6">
<h3>Tre</h3>
<p>furniture set</p>
<span class="price">$32560</span>
<img src="img/item-tre.jpg" width="156" height="120" alt=""Tre" furniture set">
</a>
</li>
</ul>
</div>
</section>
<?php
require('components/header.php');
// Create a variable here
require('components/product_info.php');
require('components/footer.php');
<section class="item">
<div class="container">
<h1 class="item-title">Product name</h1>
<img src="img/placeholder.png" width="510" height="392" alt="Placeholder for product photo">
</div>
</section>
.visually-hidden:not(:focus):not(:active),
input[type="checkbox"].visually-hidden,
input[type="radio"].visually-hidden {
position: absolute;
width: 1px;
height: 1px;
margin: -1px;
border: 0;
padding: 0;
white-space: nowrap;
clip-path: inset(100%);
clip: rect(0 0 0 0);
overflow: hidden;
}
body {
min-width: 550px;
padding: 0;
margin: 0;
font-family: "Arial", "Helvetica", sans-serif;
font-size: 13px;
line-height: 18px;
}
a {
text-decoration: none;
color: inherit;
}
.container {
width: 510px;
padding: 0 20px;
margin: 0 auto;
}
.site-navigation {
display: flex;
width: 510px;
padding: 0 20px;
margin: 0 auto;
justify-content: space-between;
}
.site-header {
position: relative;
z-index: 2;
box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}
.logo-link:hover,
.logo-link:focus {
opacity: 0.5;
}
.logo-link:active {
opacity: 0.3;
}
.logo-link img {
margin: 10px 0;
}
.navigation-list {
display: flex;
margin: 0 -15px 0 0;
padding: 0;
list-style: none;
flex-wrap: wrap;
justify-content: flex-end;
}
.navigation-list a:hover,
.navigation-list a:focus {
opacity: 0.5;
}
.navigation-list a:active {
color: #ff8a00;
}
.navigation-list a {
display: block;
padding: 12px 15px 11px;
color: #845927;
}
.intro .container {
z-index: -1;
min-height: 150px;
margin-bottom: 20px;
padding: 15px 0 0;
box-sizing: border-box;
background-image: url("img/index-background.jpg");
background-repeat: no-repeat;
background-position: top right;
}
.intro-title {
width: 240px;
padding: 0;
margin: 0;
font-family: "Georgia", "Times", serif;
font-size: 28px;
line-height: 36px;
font-weight: 400;
}
.intro-title b,
.features-title b,
.delivery-text b {
font-weight: 400;
color: #ff8a00;
}
.intro p {
width: 210px;
margin: 8px 0 10px;
padding: 0;
line-height: 20px;
}
.quote {
display: block;
position: relative;
padding: 0 0 0 33px;
margin: 20px 0 20px;
font-family: "Georgia", "Times", serif;
font-style: italic;
}
.quote p {
padding: 0;
margin: 0;
font-size: 16px;
line-height: 24px;
quotes: none;
}
.quote::before {
position: absolute;
content: "«";
top: 0;
left: 0;
font-size: 36px;
color: #ff8a00;
}
.author {
display: block;
padding: 0;
margin: 4px 0;
}
.popular-products {
margin: 0;
background-color: #fff3e5;
}
.delivery,
.custom,
.contacts,
.catalog,
.item {
margin: 15px 0 10px;
}
.delivery-title,
.custom-title,
.contacts-title,
.catalog-title,
.item-title {
padding: 0;
margin: 0;
font-family: "Georgia", "Times", serif;
font-size: 28px;
line-height: 36px;
font-weight: 400;
}
.custom-columns {
display: flex;
flex-grow: 0;
}
.custom-columns img {
display: flex;
flex-shrink: 0;
align-items: center;
margin: 20px 20px 30px 0;
min-height: 200px;
}
.custom-columns div {
margin: 5px 0 20px;
}
.products-list {
display: flex;
padding: 20px 0 0;
margin: 0 0 0 -20px;
flex-wrap: wrap;
flex-shrink: 0;
list-style: none;
}
.products-list li {
display: flex;
}
.product-card {
position: relative;
display: flex;
width: 132px;
margin-bottom: 20px;
margin-left: 20px;
padding: 124px 12px 12px;
flex-direction: column;
background-color: #ffffff;
box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}
.product-card-new {
position: relative;
}
.product-card-new::after {
position: absolute;
content: "new";
width: 34px;
height: 15px;
top: 8px;
right: -2px;
font-weight: 700;
line-height: 14px;
color: #ffffff;
text-align: center;
background-color: #ff8a00;
border-radius: 4px 0 0 4px;
}
.product-card:hover,
.product-card:focus {
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}
.product-card:active {
box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}
.product-card img {
position: absolute;
top: 0;
left: 0;
order: -1;
}
.product-card h3 {
margin: 0 0 2px 0;
padding: 0;
font-family: "Georgia", "Times", serif;
font-size: 15px;
line-height: 18px;
font-weight: 400;
}
.product-card p {
margin: 0 0 8px 0;
padding: 0;
font-family: "Georgia", "Times", serif;
font-style: italic;
font-size: 13px;
line-height: 16px;
}
.price {
margin-top: auto;
font-weight: 700;
font-size: 15px;
color: #ff8a00;
}
.price del {
margin-right: 2px;
font-weight: 400;
font-size: 13px;
color: #000000;
text-decoration: line-through;
}
.map-link {
display: block;
margin-top: -20px;
margin-bottom: 30px;
color: #845927;
}
.map-link:hover,
.map-link:focus {
opacity: 0.5;
}
.map-link:active {
color: #ff8a00;
}
.contacts img,
.item img {
display: flex;
flex-shrink: 0;
align-items: center;
margin: 20px 0 30px;
min-height: 200px;
}
.contacts-info {
margin: -10px 0 30px;
}
.contacts-info p {
position: relative;
padding-left: 16px;
margin: 12px 0;
}
.contact-phone::before {
position: absolute;
content: "";
width: 10px;
height: 13px;
top: 2px;
left: 0;
background-image: url("img/icon-phone.svg");
}
.contact-address::before {
position: absolute;
content: "";
width: 9px;
height: 13px;
top: 2px;
left: 0;
background-image: url("img/icon-pin.svg");
}
.delivery-background {
display: flex;
flex-shrink: 0;
align-items: center;
margin: 20px 0 30px;
min-height: 200px;
background-image: url("img/delivery-background.jpg");
background-repeat: no-repeat;
background-position: center left;
}
.delivery-text {
width: 210px;
margin-left: auto;
padding: 16px 20px 20px;
background-color: #ffffff;
box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}
.delivery-text p {
margin: 8px;
padding: 0;
}
.features {
padding-top: 20px;
padding-bottom: 10px;
}
.features-title,
.services-title,
.products-title {
margin: 0;
padding: 0;
font-family: "Georgia", "Times", serif;
font-size: 20px;
line-height: 24px;
font-weight: 400;
}
.features-list {
display: flex;
padding: 0;
margin: 14px 0 0;
justify-content: space-between;
flex-wrap: wrap;
list-style: none;
}
.features-list li {
position: relative;
width: 142px;
margin-bottom: 10px;
}
.features-list li::before {
position: absolute;
content: "";
top: 2px;
left: 0;
}
.feature-unique {
padding-left: 22px;
}
.feature-unique::before {
width: 16px;
height: 12px;
background-image: url("img/feature-unique.svg");
}
.feature-organic {
padding-left: 25px;
}
.feature-organic::before {
width: 19px;
height: 12px;
background-image: url("img/feature-organic.svg");
}
.feature-protected {
padding-left: 16px;
}
.feature-protected::before {
width: 10px;
height: 12px;
background-image: url("img/feature-protected.svg");
}
.site-footer {
background-color: #847462;
}
.site-footer .container {
display: flex;
flex-grow: 1;
justify-content: space-between;
}
.copyright {
margin: auto 0;
flex-shrink: 0;
color: #ffffff;
}
.site-footer .navigation-list {
margin-right: 15px;
margin-left: -15px;
justify-content: left;
}
.copyright + .navigation-list {
justify-content: center;
margin-left: 15px;
}
.site-footer a {
display: block;
margin: 0;
padding: 14px 15px;
color: #ffffff;
}
.social-list {
display: flex;
width: 110px;
padding: 0;
margin: 0 -10px 2px;
justify-content: end;
flex-shrink: 0;
flex-wrap: wrap;
align-items: center;
list-style: none;
}
.social-list a {
display: block;
width: 14px;
height: 14px;
padding: 10px;
background-repeat: no-repeat;
background-position: center;
}
.social-link-twitter {
background-image: url("img/icon-twitter.svg");
}
.social-link-instagram {
background-image: url("img/icon-instagram.svg");
}
.social-link-facebook {
background-image: url("img/icon-facebook.svg");
}
.social-list a:hover,
.social-list a:focus {
opacity: 0.5;
}
.social-list a:active {
opacity: 0.3;
}
/* Additional styles for an alternate homepage */
.intro-alt {
min-height: 145px;
margin-bottom: 20px;
color: #ffffff;
background: linear-gradient(#ffad4c 0%, #ea9b3e 80%, #ffad4c 100%);
}
.intro-alt .container {
display: flex;
justify-content: space-between;
}
.intro-text {
flex-shrink: 0;
padding: 20px 0;
}
.intro-item {
display: flex;
flex-direction: column;
align-items: center;
position: relative;
width: 272px;
padding-top: 58px;
flex-shrink: 0;
}
.intro-item img {
position: absolute;
top: 14px;
right: 0;
}
.intro-item p {
margin-bottom: 2px;
z-index: 2;
}
.intro-alt .intro-title {
margin: 0;
padding: 0 0 4px;
font-family: "Georgia", "Times", serif;
font-size: 32px;
line-height: 36px;
font-weight: 700;
}
.intro-description {
margin: 0;
padding: 0 0 16px;
font-size: 15px;
font-weight: 700;
}
.intro-info {
margin: 0;
line-height: 22px;
}
.intro-alt code {
display: inline-block;
vertical-align: baseline;
margin: 0 8px;
padding: 1px 8px;
font-family: inherit;
color: #000000;
font-weight: 700;
letter-spacing: 0.5px;
background-color: #ffffff;
border-radius: 4px;
}
.intro-price {
z-index: 2;
font-size: 15px;
font-weight: 700;
}
.intro-price del {
margin-right: 2px;
font-weight: 400;
font-size: 13px;
color: #000000;
text-decoration: line-through;
}
.services-list {
display: flex;
padding: 0;
margin: 14px 0 0;
justify-content: space-between;
flex-wrap: wrap;
list-style: none;
}
.services-list li {
position: relative;
width: 156px;
margin-bottom: 20px;
padding: 122px 0 0;
}
.services-list li::before {
position: absolute;
content: "";
top: 0;
left: 0;
width: 156px;
height: 114px;
background-repeat: no-repeat;
}
.service-cleaning::before {
background-image: url("img/service-cleaning.jpg");
}
.service-placing::before {
background-image: url("img/service-placing.jpg");
}
.service-decorating::before {
background-image: url("img/service-decorating.jpg");
}
.products-title {
padding-top: 20px;
}
.product-card-wide {
position: relative;
display: flex;
flex-wrap: wrap;
width: 100px;
min-height: 81px;
margin-bottom: 30px;
margin-left: 20px;
padding: 15px 25px 15px 120px;
background-color: #ffffff;
box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}
.product-card-wide p {
margin-bottom: 10px;
}
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