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。