PHP enables Web sites to be accessed across domains

Cross-domain HTTP requests are required if you need to get data from different servers (different domain names).

Cross-domain requests are common on Web pages. For example, Web pages from different servers uploaded into CSS, pictures, Js scripts and so on.

In the browser, in order to secure the data, all requests are strictly restricted to the same domain name, if you need to invoke data from different sites, it needs to be resolved by cross-domain.

<?phpheader ("Access-control-allow-origin: *"); header ("Content-type:application/json; Charset=utf-8 ");? >

PHP enables Web sites to be accessed across domains