PHP のクロスドメイン問題に対する解決策の簡単な分析

header("Access-Control-Allow-Origin:*");

header( 'Access-Control-Allow-Origin:a.test.com' );

header('Access-Control-Allow-Methods:POST,GET,OPTIONS,DELETE');

header('Access-Control-Allow-Methods:*');

header("Access-Control-Allow-Headers:DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type, Accept-Language, Origin, Accept-Encoding, Access-Token");

$.ajax({ type: "POST", crossDomain: true,//允许跨域请求 ... ... ... })