webextractor:使用不同的提取器（如 css、xpath、regex 等）从网页中提取数据。

网络提取器 使用不同的提取器（如 css、xpath、regex 等）从网页中提取数据... 例子 代码： <?php use WebExtractor \ DataExtractor \ DataExtractorFactory ; use WebExtractor \ DataExtractor \ DataExtractorTypes ; use WebExtractor \ Client \ Client ; $ factory = DataExtractorFactory :: getFactory (); $ extractor = $ factory -> createDataExtractor ( DataExtractorTypes :: CSS ); $ client = new Client ; $ content = $ client -> get ( 'htt