Introduction to mutual communication between php main and iframe

这篇文章主要介绍了php main 与 iframe 相互通讯类(js+php同域/跨域),需要的朋友可以参考下

main 与 iframe 相互通讯类

之前写过一篇《iframe与主框架跨域相互访问方法》，介绍了main与iframe相互通讯的原理，不了解原理的可以先看看。

今天把main与iframe相互通讯的方法封装成类，主要有两个文件，

JS：FrameMessage.js 实现调用方法的接口，如跨域则创建临时iframe，调用同域执行者。
PHP：FrameMessage.class.php 实现接收到跨域请求时，根据参数返回执行方法的JS code。

功能如下：

1.支持同域与跨域通讯
2.传递的方法参数支持字符串，JSON，数组等。

复制代码 代码如下:

FrameMessage.exec('http://127.0.0.1/execB.php', 'myframe', 'fIframe', ['fdipzone', '{"gender":"male","age":"29"}', '["http://blog.csdn.net/fdipzone", "http://weibo.com/fdipzone"]']); 

复制代码 代码如下:

FrameMessage.exec('http://localhost/execA.php', '', 'fMain', ['programmer', '{"first":"PHP","second":"javascript"}', '["EEG","NMG"]']);

因部分浏览器不支持JSON.stringify 与JSON.parse 方法（如IE6/7），为了兼容，需要包含json2.js，下载地址：

https://github.com/douglascrockford/JSON-js

FrameMessage.js

/** Main 与 Iframe 相互通讯类 支持同域与跨域通讯
*	Date:  2013-12-29
*  Author: fdipzone
*  Ver:  1.0
*/
var FrameMessage = (function(){

  this.oFrameMessageExec = null; // 临时iframe

  /* 执行方法
  executor 执行的页面,为空则为同域
  frame  要调用的方法的框架名称,为空则为parent
  func   要调用的方法名
  args   要调用的方法的参数,必须为数组[arg1, arg2, arg3, argn...],方便apply调用
       元素为字符串格式,请不要使用html,考虑注入安全的问题会过滤
  */
  this.exec = function(executor, frame, func, args){

    this.executor = typeof(executor)!='undefined'? executor : '';
    this.frame = typeof(frame)!='undefined'? frame : '';
    this.func = typeof(func)!='undefined'? func : '';
    this.args = typeof(args)!='undefined'? (__fIsArray(args)? args : []) : []; // 必须是数组

    if(executor==''){
      __fSameDomainExec(); // same domain
    }else{
      __fCrossDomainExec(); // cross domain
    }

  }

  /* 同域执行 */
  function __fSameDomainExec(){
    if(this.frame==''){ // parent
      parent.window[this.func].apply(this, this.args);
    }else{
      window.frames[this.frame][this.func].apply(this, this.args);
    }
  }

  /* 跨域执行 */
  function __fCrossDomainExec(){
    if(this.oFrameMessageExec == null){
      this.oFrameMessageExec = document.createElement('iframe');
      this.oFrameMessageExec.name = 'FrameMessage_tmp_frame';
      this.oFrameMessageExec.src = __fGetSrc();
      this.oFrameMessageExec.style.display = 'none';
      document.body.appendChild(this.oFrameMessageExec);
    }else{
      this.oFrameMessageExec.src = __fGetSrc();
    }
  }

  /* 获取执行的url */
  function __fGetSrc(){
    return this.executor + (this.executor.indexOf('?')==-1? '?' : '&') + 'frame=' + this.frame + '&func=' + this.func + '&args=' + JSON.stringify(this.args) + '&framemessage_rand=' + Math.random();
  }

  /* 判断是否数组 */
  function __fIsArray(obj){
    return Object.prototype.toString.call(obj) === '[object Array]';
  }

  return this;

}());

FrameMessage.class.php

<?php
/** Frame Message class main 与 iframe 相互通讯类
*  Date:  2013-12-29
*  Author: fdipzone
*  Ver:  1.0
*
*  Func:
*  public execute 根据参数调用方法
*  private returnJs 创建返回的javascript
*  private jsFormat 转义参数
*/

class FrameMessage{ // class start

  /* execute 根据参数调用方法
  * @param String $frame 要调用的方法的框架名称,为空则为parent
  * @param String $func 要调用的方法名
  * @param JSONstr $args 要调用的方法的参数
  * @return String
  */
  public static function execute($frame, $func, $args=&#39;&#39;){

    if(!is_string($frame) || !is_string($func) || !is_string($args)){
      return &#39;&#39;;
    }

    // frame 与 func 限制只能是字母数字下划线
    if(($frame!=&#39;&#39; && !preg_match(&#39;/^[A-Za-z0-9_]+$/&#39;,$frame)) || !preg_match(&#39;/^[A-Za-z0-9_]+$/&#39;,$func)){
      return &#39;&#39;;
    }

    $params_str = &#39;&#39;;

    if($args){
      $params = json_decode($args, true);
      
      if(is_array($params)){

        for($i=0,$len=count($params); $i<$len; $i++){ // 过滤参数,防止注入
          $params[$i] = self::jsFormat($params[$i]);
        }
        
        $params_str = "&#39;".implode("&#39;,&#39;", $params)."&#39;";
      }
    }

    if($frame==&#39;&#39;){ // parent
      return self::returnJs("parent.parent.".$func."(".$params_str.");");
    }else{
      return self::returnJs("parent.window.".$frame.".".$func."(".$params_str.");");
    }

  }


  /** 创建返回的javascript
  * @param String $str
  * @return String 
  */
  private static function returnJs($str){

    $ret = &#39;<script type="text/javascript">&#39;."\r\n";
    $ret .= $str."\r\n";
    $ret .= &#39;</script>&#39;;

    return $ret;
  }


  /** 转义参数
  * @param String $str
  * @return String
  */
  private static function jsFormat($str){

    $str = strip_tags(trim($str)); // 过滤html
    $str = str_replace(&#39;\\s\\s&#39;, &#39;\\s&#39;, $str);
    $str = str_replace(chr(10), &#39;&#39;, $str);
    $str = str_replace(chr(13), &#39;&#39;, $str);
    $str = str_replace(&#39; &#39;, &#39;&#39;, $str);
    $str = str_replace(&#39;\\&#39;, &#39;\\\\&#39;, $str);
    $str = str_replace(&#39;"&#39;, &#39;\\"&#39;, $str);
    $str = str_replace(&#39;\\\&#39;&#39;, &#39;\\\\\&#39;&#39;, $str);
    $str = str_replace("&#39;", "\&#39;", $str);

    return $str;
  }

} // class end

?>

A.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
 <meta http-equiv="content-type" content="text/html; charset=utf-8">
 <title> main window </title>
 <script type="text/javascript" src="json2.js"></script>
 <script type="text/javascript" src="FrameMessage.js"></script>

 <script type="text/javascript">

 // main js function
 function fMain(profession, skill, company){

	var skill_p = JSON.parse(skill);
	var company_p = JSON.parse(company);
	
	var msg = "main function execute success\n\n";
	msg += "profession:" + profession + "\n";
	msg += "first skill:" + skill_p.first + "\n";
	msg += "second skill:" + skill_p.second + "\n";
	msg += "company1:" + company_p[0] + "\n";
	msg += "company2:" + company_p[1] + "\n";

	alert(msg);

 }

 // exec iframe function
 function exec_iframe(){
	// same domain
	//FrameMessage.exec(&#39;&#39;, &#39;myframe&#39;, &#39;fIframe&#39;, [&#39;fdipzone&#39;, &#39;{"gender":"male","age":"29"}&#39;, &#39;["http://blog.csdn.net/fdipzone", "http://weibo.com/fdipzone"]&#39;]);

	// cross domain
	FrameMessage.exec(&#39;http://127.0.0.1/execB.php&#39;, &#39;myframe&#39;, &#39;fIframe&#39;, [&#39;fdipzone&#39;, &#39;{"gender":"male","age":"29"}&#39;, &#39;["http://blog.csdn.net/fdipzone", "http://weibo.com/fdipzone"]&#39;]);
 }
 </script>

 </head>

 <body>
 <p>A.html main</p>
 <p><input type="button" value="exec iframe function" onclick="exec_iframe()"></p>
 <!-- same domain -->
 <!--<iframe src="B.html" name="myframe" width="500" height="100"></iframe>-->
 <!-- cross domain -->
 <iframe src="http://127.0.0.1/B.html" name="myframe" width="500" height="100"></iframe>
 </body>
</html>

B.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
 <meta http-equiv="content-type" content="text/html; charset=utf-8">
 <title> iframe window </title>
 <script type="text/javascript" src="json2.js"></script>
 <script type="text/javascript" src="FrameMessage.js"></script>

 <script type="text/javascript">

 // iframe js function 
 function fIframe(name, obj, arr){
	
	var obj_p = JSON.parse(obj);
	var arr_p = JSON.parse(arr);
	
	var msg = "iframe function execute success\n\n";
	msg += "name:" + name + "\n";
	msg += "gender:" + obj_p.gender + "\n";
	msg += "age:" + obj_p.age + "\n";
	msg += "blog:" + arr_p[0] + "\n";
	msg += "weibo:" + arr_p[1] + "\n";

	alert(msg);

 }

 // exec main function
 function exec_main(){
	// same domain
	//FrameMessage.exec(&#39;&#39;, &#39;&#39;, &#39;fMain&#39;, [&#39;programmer&#39;, &#39;{"first":"PHP","second":"javascript"}&#39;, &#39;["EEG","NMG"]&#39;]);

	// cross domain
	FrameMessage.exec(&#39;http://localhost/execA.php&#39;, &#39;&#39;, &#39;fMain&#39;, [&#39;programmer&#39;, &#39;{"first":"PHP","second":"javascript"}&#39;, &#39;["EEG","NMG"]&#39;]); 
 }
 </script>

 </head>

 <body>
 <p>B.html iframe</p>
 <p><input type="button" value="exec main function" onclick="exec_main()"></p>
 </body>
</html>

execA.php 与 execB.php

<?php
require &#39;FrameMessage.class.php&#39;;

$frame = isset($_GET[&#39;frame&#39;])? $_GET[&#39;frame&#39;] : &#39;&#39;;
$func = isset($_GET[&#39;func&#39;])? $_GET[&#39;func&#39;] : &#39;&#39;;
$args = isset($_GET[&#39;args&#39;])? $_GET[&#39;args&#39;] : &#39;&#39;;

$result = FrameMessage::execute($frame, $func, $args);

echo $result;
?>

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