用正则表达式，抓取京东的商品列表
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抓取文件
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<!--抓取文件-->
<?php
require 'function.php';
$url = 'https://list.jd.com/list.html?cat=737,794,878';
$data = curl_data($url);
//echo $data;
$pattem = '/<li class="gl-item">(.*?)<i class="promo-words">/si'; //.*匹配前边原子以后的所有的内容 i 不分大小写
//中间数值必须为字符串，不能是数组
$preg = preg_match_all($pattem,$data,$matches);
//print_r($preg);
//print_r($matches);
$contents = preg_replace('/data-lazy-img/','src',$matches[0]);
//print_r($con);
//用循环匹配每个数组里面的汉字说明
$pattem1 = '/<img.*src="(.+)"/i';//图片正则
$pattem2 = '/(<em>)(.*?)<\/em>/si'; //文字正则
foreach ($contents as $content){
$preg_img = preg_match_all($pattem1,$content,$contents_img);
$preg_text = preg_match_all($pattem2,$content,$contents_text);
$fridge_img = trim($contents_img[1][0]);
$fridge_text = trim($contents_text[2][2]);
$data1=[
'fridge_img'=>$fridge_img,
'fridge_text'=>$fridge_text
];
// print_r($data1);
insert('fridge_list',$data1);
}
//find() 查询一条 select()查询所有
//$data2 = find('fridge_list','fridge_id,fridge_img,fridge_text');
$data2 = select('fridge_list','fridge_id,fridge_img,fridge_text');
print_r($data2);点击 "运行实例" 按钮查看在线实例
显示文件
<!--显示文件-->
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>冰箱</title>
<style>
*{
margin: 0;
padding: 0;
}
h2{
text-align: center;
margin:20px 0;
color:green;
}
ul{
width: 1000px;
margin:0 auto;
text-align: center;
list-style: none;
overflow: hidden;
}
li{
float: left;
width: 300px;
height: 280px;
display: block;
padding: 15px;
border: 1px solid lightgray;
}
li a{
float: left;
font-size: 15px;
text-decoration: none;
}
</style>
</head>
<body>
<h2>冰箱列表</h2>
<ul>
<?php
require 'function.php';
$contents = select('fridge_list','fridge_img,fridge_text');
foreach ($contents as $content){
echo "<li><img src='{$content['fridge_img']}'>"."<a href='#'>{$content['fridge_text']}</a></li>";
}
?>
</ul>
</body>
</html>点击 "运行实例" 按钮查看在线实例
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