似乎破坏了我的Google Analytics分析脚本的PHP问题

问题描述

|| 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 ========================*/
?>
这是发生这种情况的示例页面: http://www.comehike.com/outdoors/hiking_headlamp.php 如果我从global.php中取出goog分析代码,并将其作为标头html放置在标头中,则它可以正常工作,因为我可以看到访问者数据。如果我将其放入global.php文件中,它将无法正常工作。 这是我尝试从global.php中的标头调用的函数 知道这里出了什么问题吗?如果仅仅是语法问题,那就更麻烦了吧?     

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;
然后,您可以回显您的$ str。
echo $str;
另外,由于您使用的是输出缓冲区,因此也可以使用此方法
function printGoogleAnalytics()
{
?>
<script type=\"text/javascript\">
    ....
</script>
<?php
}
...
调用脚本将在两者之间打印html。 我希望能帮助您解决问题     

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