Crawl dữ liệu từ một website sử dụng php

Trong bài viết này AnonyHome sẽ hướng dẫn các bạn lấy dữ liệu từ 1 website khác bằng cách sử dụng thư viện trong php. Và thư viện AnonyHome giới thiệu hôm nay đó là PHP Simple HTML DOM Parser.

Giới thiệu về php Simple HTML DOM Parser

Cài đặt

Ví dụ 1. Hiển thị toàn bộ nội dung trang Cr- Thắng Blog.

<span style="box-sizing: inherit;"><span style="box-sizing: inherit; color: #61aeee;">&lt;?php</span> <br /> <span style="box-sizing: inherit; color: #c678dd;">include</span>(<span style="box-sizing: inherit; color: #98c379;">'simple_html_dom.php'</span>);<br /> $url = <span style="box-sizing: inherit; color: #98c379;">'https://crthang.blogspot.com/'</span>;<br /> $html = file_get_html($url);<br /> <span style="box-sizing: inherit; color: #c678dd;">echo</span> $html;<br /><span style="box-sizing: inherit; color: #61aeee;">?&gt;</span></span><br />

1

<span style="box-sizing: inherit;"><span style="box-sizing: inherit; color: #61aeee;">&lt;?php</span> <br />    <span style="box-sizing: inherit; color: #c678dd;">include</span>(<span style="box-sizing: inherit; color: #98c379;">'simple_html_dom.php'</span>);<br />    $url = <span style="box-sizing: inherit; color: #98c379;">'https://crthang.blogspot.com/'</span>;<br />    $html = file_get_html($url);<br />    <span style="box-sizing: inherit; color: #c678dd;">echo</span> $html;<br /><span style="box-sizing: inherit; color: #61aeee;">?&gt;</span></span><br />

Kết quả nhận được:

Ví dụ 2. Lấy ảnh từ trang Cr- Thắng Blog trên

<span style="box-sizing: inherit;"><span style="box-sizing: inherit; color: #61aeee; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit; letter-spacing: normal;">&lt;?php</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;"> <br /> </span><span style="box-sizing: inherit; color: #c678dd; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit; letter-spacing: normal;">include</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;">(</span><span style="box-sizing: inherit; color: #98c379; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit; letter-spacing: normal;">'simple_html_dom.php'</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;">);<br /> $url = </span><span style="box-sizing: inherit; color: #98c379; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: 14.4px; letter-spacing: normal;">'https://crthang.blogspot.com/'</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: 14.4px; letter-spacing: normal;">;</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;"><br /> $html = file_get_html($url);<br /> </span><span style="color: #c678dd; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;"><span style="font-size: 14.4px;">foreach($html-&gt;find('img') as $element) {<br /> echo '&lt;img src="'.$element-&gt;src.'" /&gt;&lt;br&gt;';<br />}</span></span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;"><br /></span><span style="box-sizing: inherit; color: #61aeee; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit; letter-spacing: normal;">?&gt;</span></span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;"><br /></span>

1

<span style="box-sizing: inherit;"><span style="box-sizing: inherit; color: #61aeee; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit; letter-spacing: normal;">&lt;?php</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;"> <br />    </span><span style="box-sizing: inherit; color: #c678dd; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit; letter-spacing: normal;">include</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;">(</span><span style="box-sizing: inherit; color: #98c379; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit; letter-spacing: normal;">'simple_html_dom.php'</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;">);<br />    $url = </span><span style="box-sizing: inherit; color: #98c379; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: 14.4px; letter-spacing: normal;">'https://crthang.blogspot.com/'</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: 14.4px; letter-spacing: normal;">;</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;"><br />    $html = file_get_html($url);<br />    </span><span style="color: #c678dd; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;"><span style="font-size: 14.4px;">foreach($html-&gt;find('img') as $element) {<br />       echo '&lt;img src="'.$element-&gt;src.'" /&gt;&lt;br&gt;';<br />}</span></span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;"><br /></span><span style="box-sizing: inherit; color: #61aeee; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit; letter-spacing: normal;">?&gt;</span></span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;"><br /></span>

Kết quả nhận được:

Ví dụ 3. Lấy các link từ Cr- Thắng Blog

<span style="box-sizing: inherit; color: #61aeee; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;">&lt;?php</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;"> <br /> </span><span style="box-sizing: inherit; color: #c678dd; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;">include</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;">(</span><span style="box-sizing: inherit; color: #98c379; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;">'simple_html_dom.php'</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;">);<br /> $url = </span><span style="box-sizing: inherit; color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: 14.4px;">'https://crthang.blogspot.com/'</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: 14.4px;">;</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;"><br /> $html = file_get_html($url);<br /></span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;"><span style="font-size: 14.4px;"> foreach($html-&gt;find('a') as $element) <br /> echo $element-&gt;href . '&lt;br&gt;'; </span><br /></span><span style="box-sizing: inherit; color: #61aeee; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;">?&gt;</span><span style="col or: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;"><br /></span>

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<span style="box-sizing: inherit; color: #61aeee; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;">&lt;?php</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;"> <br />    </span><span style="box-sizing: inherit; color: #c678dd; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;">include</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;">(</span><span style="box-sizing: inherit; color: #98c379; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;">'simple_html_dom.php'</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;">);<br />    $url = </span><span style="box-sizing: inherit; color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: 14.4px;">'https://crthang.blogspot.com/'</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: 14.4px;">;</span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;"><br />    $html = file_get_html($url);<br /></span><span style="color: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;"><span style="font-size: 14.4px;">    foreach($html-&gt;find('a') as $element) <br />       echo $element-&gt;href . '&lt;br&gt;';  </span><br /></span><span style="box-sizing: inherit; color: #61aeee; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace; font-size: inherit;">?&gt;</span><span style="col or: white; font-family: &quot;menlo&quot; , &quot;monaco&quot; , &quot;consolas&quot; , &quot;liberation mono&quot; , &quot;courier new&quot; , monospace;"><br /></span>

kết quả nhận được: 

Kết luận 

Như vậy trong bài viết này AnonyHome đã giới thiệu cho các bạn cách lấy dữ liệu từ một website thông qua thư viện simple_html_dom.php . Hi vọng nó sẽ ít nhiều giúp ích cho các bạn trong thực tế.