Your markup is valid HTML5+Microdata and you are using the Schema.org vocabulary appropriately. With “validator”, you probably refer to Google’s Structured Data Testing Tool. Note that errors shown in this tool don’t necessarily mean that your markup is wrong; they often mean that you won’t get a certain Google search result feature unless you provide … Read more
The main questions are What are you going to do with this data? and How are you filtering/sorting/joining/manipulating this data? JSON (like XML) is great for data exchange, small storage and generically defined structures, but it cannot participate in typical actions you run within your RDBMS. In most cases it will be better to transfer … Read more
The wrong way: trying to parse HTML Use (cURL/jQuery/file_get_contents/requests/wget/more jQuery) to fetch the HTML article code of the article, then use a DOM parser to extract table.infobox tr[3] td / use a regex. This is actually a really bad idea most of the time. Wikipedia’s HTML code is not particularly parsing-friendly (especially infoboxes which are … Read more