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Making Conversion/Event Pixel Load only on a specific % of page loads

我有一个安全的图像像素(下面的示例)用于跟踪转化,但我只希望它在50%的时间内加载,这样做的最简单方法是什么?

<img src="https://tt1.zedo.com/ads2/t?o=376447;h=1231184;z=[timestamp]" width="1" height="1" BORDER="0">

I think you should store some counter in the session.

example:

$_SESSION['counter']++;
if ($_SESSION['counter'] % 2 == 0) {
 echo '<img src="https://tt1.zedo.com/ads2/t?o=376447;h=1231184;z=[timestamp]" width="1" height="1" BORDER="0">';
}

您甚至可以在没有PHP的情况下在客户端上执行if(Math.random> 0.5)$('body')。append(“”)

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