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Before the interview, the interviewer asked me if there is a cross-domain problem, but I am not sure, now can be sure to say no.
Using the PHP curl and File_get_contents methods to implement the backend cross-domain respectively. The scenario in this article is also implemented under TP5.
One, using curl to achieve
1) front-end code, which is a page that accesses the path to Http://app.write.com/thinkphp/public/index.php/index/index/curl, module index, controller index, Method curl
1<! DOCTYPE html>2"en">34<meta charset="UTF-8">5<title> Test curl</title>67<body>8 9<div id="Test">Ten One</div> A<script type="Text/javascript"> - //the use of native XML - varOajax =NewXMLHttpRequest (); theOajax.open ('GET',"/thinkphp/public/index.php/index/index/curlapi");//The front end is a GET request URL and does not affect the backend -Oajax.onreadystatechange =function () { - if(Oajax.readystate = =4) { - if(Oajax.status >= $&& Oajax.status < -|| Oajax.status = =304) { + Console.log (oajax.responsetext); - varData=Json.parse (oajax.responsetext); +document.getElementById ("Test"). innerhtml=data.elist[0]. Code; A}Else { at Console.log (oajax.status); - } - } - }; - oajax.send (); -</script> in</body> -2) Interface Code
1 //How to use curl to implement a package2Public Function Docurlpostrequest ($url, $requestString, $timeout =5){3 if($url = ="'|| $requestString = ="'|| $timeout <=0){4 return false;5 }6$con = Curl_init ((string) $url);//Initializes a curl session. 7 //SET options for a session8curl_setopt ($con, Curlopt_header,false);9 curl_setopt ($con, Curlopt_postfields, $requestString);Tencurl_setopt ($con, Curlopt_post,true); Onecurl_setopt ($con, Curlopt_returntransfer,true); Acurl_setopt ($con, Curlopt_timeout, (int) $timeout); - //performs a curl session. -$data =curl_exec ($con); the //Close a session - curl_close ($con); - - return$data; + } - Publicfunction Curlapi () { + //examples of custom parameters A$URLARR =[ at "PageNo"=1, - "pagesize"= $, - "Condstr"="Social Big classroom: 0" - ]; -$post _string =http_build_query ($URLARR); - in$url ="cross-domain full address"; - return$ This-docurlpostrequest ($url, $post _string); to ///return "common"; +}Second, using file_get_contents to realize
The front-end code is consistent and the back-end encapsulates the method
1 Publicfunction Filegetcontent ($SURL, $data) {2$aContext = [3 'http'= [4 'Method'='POST',5 'Header'='content-type:application/x-www-form-urlencoded',6 'content'=$data7 ]8 ]; 9 Ten$cxContext = Stream_context_create ($aContext);//Create and return a text data stream and apply various options One$d = file_get_contents ($SURL,false, $cxContext); A return$d; -}The above Docurlpostrequest method can be replaced by filegetcontent.
Of course, you can also put two methods in the common.php to use directly.
This article concludes.
Curl and file_get_contents implement a simulated POST request
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