php广告加载类用法实例

本文实例讲述了php广告加载类的用法，非常实用。分享给大家供大家参考。具体方法如下：

该php广告加载类，支持异步与同步加载。需要使用Jquery实现。

ADLoader.class.php类文件如下：

<?php
/** 广告加载管理类
*  Date:  2013-08-04
*  Author: fdipzone
*  Ver:  1.0
*
*  Func:
*  public load     加载广告集合
*  public setConfig  广告配置
*  private getAds    根据channel创建广告集合
*  private genZoneId  zoneid base64_encode 处理
*  private genHtml   生成广告html
*  private checkBrowser 检查是否需要同步加载的浏览器
*/ 

class ADLoader{ // class start 

  private static $_ads = array();   // 广告集合
  private static $_step = 300;    // 广告加载间隔
  private static $_async = true;   // 是否异步加载
  private static $_config = array(); // 广告设置文件
  private static $_jsclass = null;  // 广告JS class 

  /** 加载广告集合
  * @param String $channel 栏目,对应config文件
  * @param int   $step  广告加载间隔
  * @param boolean $async  是否异步加载
  */
  public static function load($channel='', $step='', $async=''){
    if(isset($step) && is_numeric($step) && $step>0){
      self::$_step = $step;
    } 

    if(isset($async) && is_bool($async)){
      self::$_async = $async;
    } 

    // 判断浏览器,如IE强制使用同步加载
    if(!self::checkBrowser()){
      self::$_async = false;
    } 

    self::getAds($channel);
    self::genZoneId(); 

    return self::genHtml();
  } 

  /** 设置config
  * @param String $config 广告配置
  * @param String $jsclass js class文件路径
  */
  public static function setConfig($config=array(), $jsclass=''){
    self::$_config = $config;
    self::$_jsclass = $jsclass;
  } 

  /** 根据channel创建广告集合
  * @param String $channel 栏目
  */
  private static function getAds($channel=''){
    $AD_Config = self::$_config;
    if($AD_Config!=null){
      self::$_ads = isset($AD_Config[$channel])? $AD_Config[$channel] : $AD_Config['default'];
    }
  } 

  /** zoneid base64_encode 处理 */
  private static function genZoneId(){ 

    // 同步加载广告不需要处理zoneid
    if(!self::$_async){
      return ;
    } 

    $ads = self::$_ads;
    for($i=0,$len=count($ads); $i<$len; $i++){
      if(isset($ads[$i]['zoneId'])){
        $ads[$i]['zoneId'] = base64_encode('var zoneid='.$ads[$i]['zoneId'].';');
      }
    }
    self::$_ads = $ads;
  } 

  /** 生成广告html */
  private static function genHtml(){
    $ads = self::$_ads;
    $html = array();
    if(self::$_jsclass!=null && $ads){
      array_push($html, '<script type="text/javascript" src="'.self::$_jsclass.'"></script>'); 

      // 同步需要预先加载
      if(!self::$_async){
        foreach($ads as $ad){
          array_push($html, '<div id="'.$ad['domId'].'_container" style="display:none">');
          array_push($html, '<script type="text/javascript">');
          array_push($html, 'ADLoader.preload('.json_encode($ad).');');
          array_push($html, '</script>');
          array_push($html, '</div>');
        }
      } 

      array_push($html, '<script type="text/javascript">');
      array_push($html, 'var ads='.json_encode($ads).';');
      array_push($html, '$(document).ready(function(){ ADLoader.load(ads, '.self::$_step.', '.intval(self::$_async).'); });');
      array_push($html, '</script>');
    }
    return implode("\r\n", $html);
  } 

  /** 判断是否需要强制同步加载的浏览器 */
  private static function checkBrowser(){
    $user_agent = $_SERVER['HTTP_USER_AGENT'];
    if(strstr($user_agent,'MSIE')!=''){
      return false;
    }
    return true;
  } 

} // class end
?>

ADConfig.php文件如下：

<?php
/** 广告配置文件 **/ 

return array( 

  'case_openx' => array(
    array(
      'type' => 'openx',
      'domId' => 'ad_728x90',
      'zoneId' => 452
    ),
    array(
      'type' => 'openx',
      'domId' => 'ad_300x250',
      'zoneId' => 449
    ),
    array(
      'type' => 'openx',
      'domId' => 'ad_l2_300x250',
      'zoneId' => 394
    ),
  ), 

  'case_url' => array(
    array(
      'type' => 'url',
      'domId' => 'ad_728x90',
      'url' => 'adurl.php?zoneid=452'
    ),
    array(
      'type' => 'url',
      'domId' => 'ad_300x250',
      'url' => 'adurl.php?zoneid=449'
    ),
    array(
      'type' => 'url',
      'domId' => 'ad_l2_300x250',
      'url' => 'adurl.php?zoneid=394'
    )
  ), 

  'case_sync_openx' => array(
    array(
      'type' => 'openx',
      'domId' => 'ad_728x90',
      'zoneId' => 452
    ),
    array(
      'type' => 'openx',
      'domId' => 'ad_300x250',
      'zoneId' => 449
    ),
    array(
      'type' => 'openx',
      'domId' => 'ad_l2_300x250',
      'zoneId' => 394
    ),
  ), 

  'default' => array(
    array(
      'type' => 'openx',
      'domId' => 'ad_728x90',
      'zoneId' => 452
    ),
    array(
      'type' => 'openx',
      'domId' => 'ad_300x250',
      'zoneId' => 449
    ),
    array(
      'type' => 'openx',
      'domId' => 'ad_l2_300x250',
      'zoneId' => 394
    ),
  ), 

); 

?>

ADLoader.js文件如下：

/** 异步加载广告
*  Date:  2013-08-04
*  Author: fdipzone
*  Ver:  1.0
*/
var ADLoader = (function(){ 

  var _ads = [],   // 广告集合
    _step = 300,  // 广告加载间隔
    _async = true, // 是否异步加载
    _loaded = 0;  // 已经加载的广告数 

  /** loadAd 循环加载广告
  * @param int c 第几个广告
  */
  function loadAD(c){
    if(_loaded>=_ads.length){
      return ;
    } 

    if($('#'+_ads[c].domId).length>0){ // 判断dom是否存在 

      if(_async){ // 异步执行 

        crapLoader.loadScript(getScript(_ads[c]), _ads[c].domId, {
          success: function(){
            completeAd();
          }
        }); 

      }else{ // 将同步加载的广告显示 

        var ad_container = $('#'+_ads[c].domId+'_container');
        ad_container.find('embed').attr('wmode','transparent').end().find('object').each(function(k, v){
          v.wmode = 'transparent'; // 将flash变透明
        });
        $('#'+_ads[c].domId)[0].appendChild(ad_container[0]);
        ad_container.show(); 

        completeAd();
      }
    }else{ // dom不存在
      completeAd();
    }
  } 

  /** 加载完广告后处理 */
  function completeAd(){
    _loaded ++;
    setTimeout(function(){
      loadAD(_loaded);
    }, _step);
  } 

  /** 获取广告
  * @param Array ad 广告参数
  */
  function getScript(ad){
    var ret = null; 

    switch(ad.type){
      case 'openx': // openx code ad
        ret = 'data:text/javascript;base64,' + ad.zoneId + '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';
        break; 

      case 'url': // url ad
        ret = ad.url;
        break;
    }
    return ret;
  } 

  /** 同步加载广告
  * @param Array ad 广告参数
  */
  function writeAd(ad){
    switch(ad.type){
      case 'openx':
        var m3_u = (location.protocol=='https:'?'https://ads.nmg.com.hk/www/delivery/ajs.php':'http://ads.nmg.com.hk/www/delivery/ajs.php');
        var m3_r = Math.floor(Math.random()*99999999999);
        if (!document.MAX_used) document.MAX_used = ',';
        document.write ("<scr"+"ipt type='text/javascript' src='"+m3_u);
        document.write ("?zoneid=" + ad.zoneId);
        document.write ('&cb=' + m3_r);
        if (document.MAX_used != ',') document.write ("&exclude=" + document.MAX_used);
        document.write (document.charset ? '&charset='+document.charset : (document.characterSet ? '&charset='+document.characterSet : ''));
        document.write ("&loc=" + escape(window.location));
        if (document.referrer) document.write ("&referer=" + escape(document.referrer));
        if (document.context) document.write ("&context=" + escape(document.context));
        if (document.mmm_fo) document.write ("&mmm_fo=1");
        document.write ("'><\/scr"+"ipt>");
        break;
       case 'url':
        document.write ('<script type="text/javascript" src="' + ad.url + '"></script>');
        break;
    }
  } 

  obj = { 

    /** 加载广告
    * @param Array  ads  广告集合
    * @param int   step 广告加载间隔
    * @param boolean async true:异步加载 false:同步加载
    */
    load: function(ads, step, async){
      _ads = ads; 

      if(typeof(step)!='undefined'){
        _step = step;
      } 

      if(typeof(async)!='undefined'){
        _async = async;
      } 

      loadAD(_loaded);
    }, 

    /** 预加载广告 */
    preload: function(ad){
      if($('#'+ad.domId).length>0){  // 判断dom是否存在
        writeAd(ad);
      }
    }
  }
  return obj; 

}()); 

/* crapLoader */
var crapLoader = (function() { 

  var isHijacked = false,
    queue = [],
    inputBuffer = [],
    writeBuffer = {},
    loading = 0,
    elementCache = {},
    returnedElements = [],
    splitScriptsRegex = /(<script[\s\S]*?<\/script>)/gim,
    globalOptions = {
      autoRelease: true,
      parallel: true,
      debug: false
    },
    defaultOptions = {
      charset: undefined,
      success: undefined,
      func: undefined,
      src: undefined,
      timeout: 3000
    },publ,
    head = document.getElementsByTagName("head")[0] || document.documentElement,
    support = {
      scriptOnloadTriggeredAccurately: false,
      splitWithCapturingParentheses: ("abc".split(/(b)/)[1]==="b")
    }; 

  function checkQueue () {
    if(queue.length) {
      loadScript( queue.shift() );
    } else if(loading === 0 && globalOptions.autoRelease) {
      debug("Queue is empty. Auto-releasing.");
      publ.release();
    }
  } 

  function checkWriteBuffer (obj) {
    var buffer = writeBuffer[obj.domId],
      returnedEl; 

    if(buffer && buffer.length) {
      writeHtml( buffer.shift(), obj ); 

    } else {
      while (returnedElements.length > 0) {
        returnedEl = returnedElements.pop();
        var id = returnedEl.id;
        var elInDoc = getElementById(id);
        if (!elInDoc) { continue; }
        var parent = elInDoc.parentNode;
        elInDoc.id = id + "__tmp";
        parent.insertBefore(returnedEl, elInDoc);
        parent.removeChild(elInDoc);
      }
      finished(obj);
    }
  } 

  function debug (message, obj) {
    if(!globalOptions.debug || !window.console) { return; }
    var objExtra = "";
    if(obj) {
      objExtra = "#"+obj.domId+" ";
      var depth = obj.depth;
      while(depth--) { objExtra += "  "; }
    }
    console.log("crapLoader " + objExtra + message);
  } 

  function extend (t, s) {
    var k;
    if(!s) { return t; }
    for(k in s) {
      t[k] = s[k];
    }
    return t;
  } 

  function finished (obj) {
    if(obj.success && typeof obj.success === "function") {
      obj.success.call( document.getElementById(obj.domId) );
    }
    checkQueue();
  } 

  function flush (obj) {
    var domId = obj.domId,
      outputFromScript,
      htmlPartArray; 

    outputFromScript = stripNoScript( inputBuffer.join("") );
    inputBuffer = []; 

    htmlPartArray = separateScriptsFromHtml( outputFromScript ); 

    if(!writeBuffer[domId]) {
      writeBuffer[domId] = htmlPartArray;
    } else {
      Array.prototype.unshift.apply(writeBuffer[domId], htmlPartArray);
    }
    checkWriteBuffer(obj);
  } 

  function getCachedElById (domId) {
    return elementCache[domId] || (elementCache[domId] = document.getElementById(domId));
  } 

  function getElementById (domId) {
    return ( publ.orgGetElementById.call ?
      publ.orgGetElementById.call(document, domId) :
      publ.orgGetElementById(domId) );
  } 

  function getElementByIdReplacement (domId) {
    var el = getElementById(domId),
      html, frag, div, found; 

    function traverseForElById(domId, el) {
      var children = el.children, i, l, child;
      if(children && children.length) {
        for(i=0,l=children.length; i<l; i++) {
          child = children[i];
          if(child.id && child.id === domId) { return child; }
          if(child.children && child.children.length) {
            var tmp = traverseForElById(domId, child);
            if (tmp) return tmp;
          }
        }
      }
    } 

    function searchForAlreadyReturnedEl(domId) {
      var i, l, returnedEl;
      for(i=0,l=returnedElements.length; i<l; i++) {
        returnedEl = returnedElements[i];
        if(returnedEl.id === domId) { return returnedEl; }
      }
    } 

    if(el) { return el; } 

    if (returnedElements.length) {
      found = searchForAlreadyReturnedEl(domId);
      if (found) {
        return found;
      }
    } 

    if(inputBuffer.length) {
      html = inputBuffer.join("");
      frag = document.createDocumentFragment();
      div = document.createElement("div");
      div.innerHTML = html;
      frag.appendChild(div);
      found = traverseForElById(domId, div);
      if (found) {
        returnedElements.push(found);
      }
      return found;
    }
  } 

  var globalEval = (function () {
    return (window.execScript ? function(code, language) {
      window.execScript(code, language || "JavaScript");
    } : function(code, language) {
      if(language && !/^javascript/i.test(language)) { return; }
      window.eval.call(window, code);
    });
  }()); 

  function isScript (html) {
    return html.toLowerCase().indexOf("<script") === 0;
  } 

  function runFunc (obj) {
    obj.func();
    obj.depth++;
    flush(obj);
  } 

  function loadScript (obj) {
    loading++;
    // async loading code from jQuery
    var script = document.createElement("script");
    if(obj.type) { script.type = obj.type; }
    if(obj.charset) { script.charset = obj.charset; }
    if(obj.language) { script.language = obj.language; } 

    logScript(obj); 

    var done = false;
    // Attach handlers for all browsers
    script.onload = script.onreadystatechange = function() {
      loading--;
      script.loaded = true;
      if ( !done && (!this.readyState ||
          this.readyState === "loaded" || this.readyState === "complete") ) {
        done = true;
        script.onload = script.onreadystatechange = null;
        debug("onload " + obj.src, obj);
        flush(obj);
      }
    }; 

    script.loaded = false;
    script.src = obj.src;
    obj.depth++; 

    // Use insertBefore instead of appendChild to circumvent an IE6 bug.
    // This arises when a base node is used (#2709 and #4378).
    head.insertBefore( script, head.firstChild );
    setTimeout(function() {
      if(!script.loaded) { throw new Error("SCRIPT NOT LOADED: " + script.src); }
    }, obj.timeout);
  } 

  function logScript (obj, code, lang) {
    debug((code ?
      "Inline " + lang + ": " + code.replace("\n", " ").substr(0, 30) + "..." :
      "Inject " + obj.src), obj);
  } 

  function separateScriptsFromHtml (htmlStr) {
    return split(htmlStr, splitScriptsRegex);
  } 

  function split (str, regexp) {
    var match, prevIndex=0, tmp, result = [], i, l; 

    if(support.splitWithCapturingParentheses) {
      tmp = str.split(regexp);
    } else {
      // Cross browser split technique from Steven Levithan
      // http://blog.stevenlevithan.com/archives/cross-browser-split
      tmp = [];
      while(match = regexp.exec(str)) {
        if(match.index > prevIndex) {
          result.push(str.slice(prevIndex, match.index));
        } 

        if(match.length > 1 && match.index < str.length) {
          Array.prototype.push.apply(tmp, match.slice(1));
        } 

        prevIndex = regexp.lastIndex;
      } 

      if(prevIndex < str.length) {
        tmp.push(str.slice(prevIndex));
      } 

    } 

    for(i=0, l=tmp.length; i<l; i=i+1) {
      if(tmp[i]!=="") { result.push(tmp[i]); }
    }
    return result;
  } 

  function stripNoScript (html) {
    return html.replace(/<noscript>[\s\S]*?<\/noscript>/ig, "");
  } 

  function trim (str) {
    if(!str) { return str; }
    return str.replace(/^\s*|\s*$/gi, "");
  } 

  function writeHtml (html, obj) {
    if( isScript(html) ) {
      var dummy = document.createElement("div");
      dummy.innerHTML = "dummy<div>" + html + "</div>"; // trick for IE
      var script = dummy.children[0].children[0];
      var lang = script.getAttribute("language") || "javascript";
      if(script.src) {
        obj.src = script.src;
        obj.charset = script.charset;
        obj.language = lang;
        obj.type = script.type;
        loadScript(obj);
      } else {
        var code = trim( script.text );
        if(code) {
          logScript( obj, code, lang);
          globalEval( code, lang);
        }
        flush(obj);
      }
    } else {
      var container = getCachedElById(obj.domId);
      if(!container) {
        throw new Error("crapLoader: Unable to inject html. Element with id '" + obj.domId + "' does not exist");
      } 

      html = trim(html); // newline before <object> cause weird effects in IE
      if(html) {
        container.innerHTML += html;
      }
      checkWriteBuffer(obj);
    }
  } 

  function writeReplacement (str) {
    inputBuffer.push(str);
    debug("write: " + str);
  } 

  function openReplacement () {
    // document.open() just returns the document when called from a blocking script:
    // http://www.whatwg.org/specs/web-apps/current-work/#dom-document-open
    return document;
  } 

  function closeReplacement () {
    // document.close() does nothing when called from a blocking script:
    // http://www.whatwg.org/specs/web-apps/current-work/#dom-document-close
  } 

  publ = {
    hijack: function(options) {
      if(isHijacked) { return; }
      isHijacked = true;
      extend(globalOptions, options);
      if(globalOptions.parallel && !support.scriptOnloadTriggeredAccurately) {
        globalOptions.parallel = false;
        debug("Browsers onload is not reliable. Disabling parallel loading.");
      } 

      document.write = document.writeln = writeReplacement;
      document.open = openReplacement;
      document.close = closeReplacement;
      document.getElementById = getElementByIdReplacement;
    }, 

    release: function() {
      if(!isHijacked) { return; }
      isHijacked = false;
      document.write = this.orgWrite;
      document.writeln = this.orgWriteLn;
      document.open = this.orgOpen;
      document.close = this.orgClose;
      document.getElementById = this.orgGetElementById;
      elementCache = {};
    }, 

    handle: function(options) {
      if(!isHijacked) {
        debug("Not in hijacked mode. Auto-hijacking.");
        this.hijack();
      }
      var defaultOptsCopy = extend({}, defaultOptions);
      var obj = extend(defaultOptsCopy, options);
      obj.depth = 0; 

      if (!obj.domId) {
        obj.domId = "craploader_" + new Date().getTime();
        var span = document.createElement("span");
        span.id = obj.domId;
        document.body.appendChild(span);
      } 

      if (options.func) {
        runFunc(obj);
        return;
      } 

      if(globalOptions.parallel) {
        setTimeout(function() {
          loadScript(obj);
        }, 1);
      } else {
        queue.push(obj);
        setTimeout(function() {
          if(loading === 0) {
            checkQueue();
          }
        }, 1);
      }
    }, 

    loadScript: function(src, domId, options) {
      if (typeof domId !== "string") {
        options = domId;
        domId = undefined;
      }
      this.handle(extend({
        src:  src,
        domId: domId
      }, options));
    }, 

    runFunc: function(func, domId, options) {
      if (typeof domId !== "string") {
        options = domId;
        domId = undefined;
      }
      this.handle( extend({
        domId: domId,
        func:   func
      }, options) );
    }, 

    orgGetElementById  : document.getElementById,
    orgWrite      : document.write,
    orgWriteLn     : document.writeln,
    orgOpen       : document.open,
    orgClose      : document.close,
    _olt        : 1,
    _oltCallback    : function() {
      support.scriptOnloadTriggeredAccurately = (publ._olt===2);
    }
  }; 

  return publ;
}());

demo.php示例程序如下：

<!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> AD Loader </title>
 <style type="text/css">
 .banner1{margin:10px; border:1px solid #CCCCCC; width:728px; height:90px;}
 .banner2{margin:10px; border:1px solid #CCCCCC; width:300px; height:250px;}
 </style>
 <script type="text/javascript" src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
 </head> 

 <body>
 <div class="banner1" id="ad_728x90"></div>
 <div class="banner2" id="ad_300x250"></div>
 <div class="banner2" id="ad_l2_300x250"></div> 

 <?php
  function showAD($channel='', $step='', $async=''){
   include('ADLoader.class.php');
   $ad_config = include('ADConfig.php');
   ADLoader::setConfig($ad_config, 'ADLoader.js');
   return ADLoader::load($channel, $step, $async);
  } 

  echo showAD('case_openx'); // 异步加载
  //echo showAD('case_url');  // url方式异步加载
  //echo showAD('case_sync_openx', 300, false); // 同步加载
 ?> 

 </body>
</html>

adurl.php文件如下：

<?php
$zoneid = isset($_GET['zoneid'])? intval($_GET['zoneid']) : 0;
if($zoneid){
?>
var zoneid = <?=$zoneid ?>;
var m3_u = (location.protocol=='https:'?'https://ads.nmg.com.hk/www/delivery/ajs.php':'http://ads.nmg.com.hk/www/delivery/ajs.php');
var m3_r = Math.floor(Math.random()*99999999999);
if (!document.MAX_used) document.MAX_used = ',';
document.write ("<scr"+"ipt type='text/javascript' src='"+m3_u);
document.write ("?zoneid=" + zoneid);
document.write ('&cb=' + m3_r);
if (document.MAX_used != ',') document.write ("&exclude=" + document.MAX_used);
document.write (document.charset ? '&charset='+document.charset : (document.characterSet ? '&charset='+document.characterSet : ''));
document.write ("&loc=" + escape(window.location));
if (document.referrer) document.write ("&referer=" + escape(document.referrer));
if (document.context) document.write ("&context=" + escape(document.context));
if (document.mmm_fo) document.write ("&mmm_fo=1");
document.write ("'><\/scr"+"ipt>");
<? } ?>

本文所述完整实例源码点击此处本站下载。

希望本文所述对大家的php程序设计有所帮助。