使用 PHP 获取页面的 HTML 源代码

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时间:2020-08-25 16:32:01  来源:igfitidea点击:

Get HTML source code of page with PHP

phphtml

提问by JJJollyjim

If I have the html file:

如果我有 html 文件:

<!doctype html>
 <html>
  <head></head>
   <body>
    <!-- Begin -->
    Important Information
    <!-- End -->
   </body>
  </head>
 </html>

How can I use PHP to get the string "Important Information" from the file?

如何使用 PHP 从文件中获取字符串“重要信息”?

采纳答案by Endophage

If you already have the parsing sorted, just use file_get_contents(). You can pass it a URL and it will return the content found at the URL, in this case, the html. Or if you have the file locally, you pass it the file path.

如果您已经对解析进行了排序,只需使用file_get_contents(). 您可以向它传递一个 URL,它会返回在 URL 中找到的内容,在本例中为 html。或者,如果您在本地拥有该文件,则将文件路径传递给它。

回答by Murilo Vasconcelos

In this simple example you can open the file and do fgets()until you find a line with <!-- Begin -->and saving the lines until you find <!-- End -->.

在这个简单的示例中,您可以打开文件并执行fgets()直到找到一行<!-- Begin -->并保存这些行直到找到<!-- End -->.

If your HTML is in a variable you can just do:

如果您的 HTML 位于变量中,您可以执行以下操作:

<?php
$begin = strpos($var, '<!-- Begin -->') + strlen('<!-- Begin -->'); // Can hardcode this with 14 (the length of your 'needle'
$end   = strpos($var, '<!-- End -->');

$text = substr($var, $begin, ($end - $begin));

echo $text;
?>

You can see the output here.

您可以在此处查看输出。

回答by Manish Trivedi

You can fetch "HTML" by this

你可以通过这个获取“HTML”

//file_get_html function from third party library
// Create DOM from URL or file
$html = file_get_html('http://www.example.com/');

and any operation on DOM then read following docs: http://de.php.net/manual/en/book.dom.php

以及对 DOM 的任何操作,然后阅读以下文档:http: //de.php.net/manual/en/book.dom.php