如何解决似乎破坏了我的Google Analytics分析脚本的PHP问题
|| 我有一个global.php文件，该文件从每个脚本的顶部调用。该脚本旨在托管我的所有标头信息。 发生的问题是，一旦我将Google Analytics（分析）代码放到global.php中，它就不再向我的Google Analytics（分析）注册数据。 这是global.php代码：<?php
/* this file needs to be included in every user-facing script that serves ads */
/* this will prevent \"PHP Warning: Cannot modify header information - headers already sent..\" */
ob_start();
/* this will make session cookie worl for both http://www.comehike.com and http://comehike.com
* session cookie lifetime is set to 2 hours
*/
session_set_cookie_params(\"7200\",\"/\",\".comehike.com\");
/* it is better to have session_start here rather then in every page
* session_start needs to be called before any headers sent to not trigger php warning */
session_start();
global $production;
$production = true;
/*============================== ad pacement utils ===============================*/
/*
* this helper module will simplify ads placement in production and simulate ads in development.
* It will allow to turn of the ads for the user with premium account.
*
* To use this module:
* in the head,where google site verification needs to be included,add the following
<?php
printGoogleSiteVerification();
?>
* in the page,where ads needs to be inserted,add the following lines (example):
<?php
printGoogleAdPlacement(7425893768,250,\'10/11/10\');
?>
*/
function printGoogleSiteVerification(){
global $production;
$str = \'\';
if($production===true){
$str.= \'<meta name=\"google-site-verification\" content=\"RJcu8ObHW6huUbyea336xJ1WgLiC4478fz3_3r_zthc\" />\'.\"\\n\";
$str.= \'<meta name=\"alexaVerifyID\" content=\"-2hEyu8phk6CFHF-PTqdQvP2B8k\" />\'.\"\\n\";
}
echo $str;
}
function hasPremium(){
return false;
/*
//this is a sample function to check is user has a premium account.
//in this example alex won\'t see any ads
if($_SESSION[\"user_id\"]===\'alex\'){
return true;
}else{
return false;
}*/
}
//ex: printGoogleAdPlacement(7425893768,728,90,10/11/10)
//ex: printGoogleAdPlacement(7425893768,200,10/11/10)
function printGoogleAdPlacement($google_ad_slot,$width,$height,$created){
global $production;
//user with premium won\'t see any ads.
//the question is what goes into the slots instead?
if(hasPremium() === true) {return;}
$str = \'\';
if($production === true){
$str.= \'<script type=\"text/javascript\"><!--\'.\"\\n\";
$str.= \'google_ad_client = \"pub-1884332214318974\";\'.\"\\n\";
$str.= \'/* \'.$width.\'x\'.$height.\',created \'.$created.\' */\'.\"\\n\";
$str.= \'google_ad_slot = \"\'.$google_ad_slot.\'\";\'.\"\\n\";
$str.= \'google_ad_width = \'.$width.\';\'.\"\\n\";
$str.= \'google_ad_height = \'.$height.\';\'.\"\\n\";
$str.= \'//-->\'.\"\\n\";
$str.= \'</script>\'.\"\\n\";
$str.= \'<script type=\"text/javascript\"\'.\"\\n\";
$str.= \'src=\"http://pagead2.googlesyndication.com/pagead/show_ads.js\">\'.\"\\n\";
$str.= \'</script>\'.\"\\n\";
}else{
/*
$str .= \'<div style=\"padding:0; height:\'.($height+20).\'px; width:\'.$width.\'px;border: 1px solid #888;background:#fff;\">\'.
\'<div>Advertisement</div>\'.
\'<img src=\"images/fake_ads/ad_\'.$width.\'_\'.$height.\'.png\"></img>\'.
\'</div>\';
*/
$str = \'<img src=\"images/fake_ads/ad_\'.$width.\'_\'.$height.\'.png\"></img>\';
}
$str = \'<div style=\"padding:0; height:\'.($height).\'px; width:\'.$width.\'px;background:#fff;\">\'.
$str.
\'</div>\';
echo $str;
}
/* =============== end of ad placement utils =================== */
/* ===================== google anaytics ========================*/
function printGoogleAnalytics()
{
$str = \'\';
if($production === true)
{
$str.= \'<script type=\"text/javascript\">\'.\"\\n\";
$str.= \'(function() {\'.\"\\n\";
$str.= \' var ga = document.createElement(\"script\"); ga.type = \"text/javascript\"; ga.async = true;\'.\"\\n\";
$str.= \' ga.src = (\"https:\" == document.location.protocol ? \"https://ssl\" : \"http://www\") + \".google-analytics.com/ga.js\";\'.\"\\n\";
$str.= \' var s = document.getElementsByTagName(\"script\")[0]; s.parentNode.insertBefore(ga,s);\'.\"\\n\";
$str.= \'})();\'.\"\\n\";
$str.= \'</script>\'.\"\\n\";
}
echo $str;
}
/* ===================== end of google anaytics ========================*/
?>
解决方法
我看了一下代码，看不到任何错误，该代码正确创建了script标记并将其添加到文档的开头。
但是最近我在尝试验证我在Google上的页面以查找其脚本标记时遇到了类似的问题。我的第一个解决方案类似于您的解决方案，它直接将代码粘贴到html中，但这不是我想要的，因为我希望它可以自动包含在所有页面中，所以这是我要做的。
用php重写代码似乎由于某种原因而破坏了它。因此，您可以使用HEREDOC语法将整个内容编写为一个字符串，而不是逐行重写：
$str =<<<GOOGLECODE
<script type=\"text/javascript\">
var _gaq = _gaq || [];
_gaq.push([\'_setAccount\',\'XX-XXXXXXX-XX\']);
_gaq.push([\'_trackPageview\']);
(function() {
var ga = document.createElement(\"script\"); ga.type = \"text/javascript\"; ga.async = true;
ga.src = (\"https:\" == document.location.protocol ? \"https://ssl\" : \"http://www\") + \".google-analytics.com/ga.js\";
var s = document.getElementsByTagName(\"script\")[0]; s.parentNode.insertBefore(ga,s);
})();
</script>
GOOGLECODE;
echo $str;
function printGoogleAnalytics()
{
?>
<script type=\"text/javascript\">
....
</script>
<?php
}
...
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