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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>"); <? } ?>
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php技术：php广告加载类用法实例，转载需保留来源！
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