这里怎么理解呢
这里如何理解呢
这是discuz中的一段代码，为了是判断php的版本号，我不理解的是，即然版本号都定为一个5.4.0RC6字符串了，哪来的比较呢，就好比，adafasdf这个字段串和wdsfa这个字符串比大小，这不是不伦不类吗，这里面的道理何在？
------解决思路----------------------
指重新定义
define('PHP_VERSION', '6');<br />
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