问题为啥删不了？？？？
回复内容：
问题为啥删不了？？？？
从你代码上来看，做不到，除非写在if之前
取不到的，你的逻辑乱了。抽出核心代码可以简单的看出：
<code>if ($request['sign_status'] !== $data) {
define('INITIAL', 1);
} else {
echo INITIAL;
}</code>
呵呵，if部分的代码根本不会和else中的代码同时被执行，所以怎么都对不了，而不是define或者$GLOBALS的问题。
从你的代码来看，你所谓的“第一次执行”和“第二次执行”应该是分别在两次不同的访问中，如果是这样的话，第一次执行以后，程序已经完成并且关闭了，第二次执行时，与第一次完全没有关系。
你只能设置Cookies或者Session来实现这种方法
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