php广告加载类用法实例

发布时间：2020-05-24 06:08:32 所属栏目：PHP 来源：互联网

导读：这篇文章主要介绍了php广告加载类用法实例,采用jQuery技术可实现异步与同步加载,具有非常广泛的实用价值,需要的朋友可以参考下

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：

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.'">');

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

  array_push($html,'<script type="text/javascript"&gt;'); 
  array_push($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("rn",$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：

return array(

'case_openx' => array(
array(
'type' => 'openx','domId' => 'ad_728x90','zoneId' => 452
),array(
'type' => 'openx','domId' => 'ad_300x250','zoneId' => 449
),'domId' => 'ad_l2_300x250','zoneId' => 394
),),'case_url' => array(
array(
'type' => 'url','url' => 'adurl.php?zoneid=452'
),array(
'type' => 'url','url' => 'adurl.php?zoneid=449'
),'url' => 'adurl.php?zoneid=394'
)
),'case_sync_openx' => array(
array(
'type' => 'openx','default' => array(
array(
'type' => 'openx',);

ADLoader.js文件如下：

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 + '">');
break;
}
}

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