PHP从页面中提取文章摘录 [英] PHP extract article excerpt from a page
问题描述
任何人都不知道如何从任何给定的文章页面生成摘录(因此可以从多种类型的网站获取信息)吗?当您将网址粘贴到帖子中时，facebook会执行类似的操作.谢谢.
anyone have any idea how to generate excerpt from any given article page (so could source from many type of sites)? Something like what facebook does when you paste a url into the post. Thank you.
推荐答案
您要执行的操作称为 file_get_contents )，然后以某种方式解析它以获取所需的内容(即，从<body>标记中提取内容).
What you're looking to do is called web scraping. The basic method for doing so would be to capture the page (you can scrape a URL using file_get_contents), and then somehow parse it for the content that you want (ie. pull out content from the <body> tag).
为了解析返回的HTML，您应该使用DOM解析器. PHP具有自己的 DOM类，您可以使用.
In order to parse the returned HTML, you should use a DOM parser. PHP has its own DOM classes which you can use.
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