How to implement remote communication function with ajax-JS Tutorial-php.cn

How to implement remote communication function with ajax

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Release： 2018-04-03 17:47:00

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This time I will show you how ajax can realize the remote communication function. What are the precautions for ajax to realize the remote communication function? The following is a practical case, let's take a look.

The example in this article shares the realization of remote communication with ajax for your reference. The specific content is as follows

First file:html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>ajax解决跨域问题</title>
  <script src="jquery-3.0.0.min.js" type="text/javascript"></script>
</head>
<body>
<script>
  $.ajax({
    type:"POST",
    url:"postDemo.php",
    data:{
      "url":"http://192.168.4.101:90/PHPStudy4/server.php",
      "username":"admin",
      "password":"admin",
    },success:function(data){
      var result=eval("("+data+")");
      console.log(result);
    }
  })
</script>
</body>
</html>

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Second file: Server-side processing data

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2016-7-21
 * Time: 10:12
 */
if ($_SERVER["REQUEST_METHOD"] == "POST") {
//  echo json_encode(array("111"=>"112"));
  if (isset($_POST["url"]) && isset($_POST["username"]) && isset($_POST["password"])) {
    $result = postDemo($_POST["url"], array("username" => $_POST["username"], "password" => $_POST["password"]));
    echo $result;
  } else {
    echo json_encode(array("msg2" => "!!!!!!!!!!!!!!!!!!!!!error!!!!!2"));
  }
} else {
  echo json_encode(array("msg" => "error!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"));
}
function postDemo($url, $data)
{
  $query = http_build_query($data);
  $options = array(
    "http" => array(
      "header" => "Content-type: application/x-www-form-urlencoded\r\n" .
        "Content-length:" . strlen($query) . "\r\n" .
        "User-Agent:MyAgent/1.0/r/n",
      "method" => "POST",
      "content" => $query
    )
  );
  $content = stream_context_create($options);
  $result = file_get_contents($url, false, $content);
  return $result;
}
//echo postDemo("http://192.168.4.101:90/PHPStudy4/server.php",array("username"=>"admin","password"=>"admin"));

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I believe I read the case in this article You have mastered the method. For more exciting information, please pay attention to other related articles on the php Chinese website!