如何生成22位的时间戳？
- PHP code
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ -->echo number_format(microtime(true),12,'','');
我用这种方法，发现最后的4~6位总在几个数之间变动，不知道为什么？
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为啥要22位的呀？有什么业务需求？
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12位小数的意思，时间在变它怎么会不变啊。
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microtime 的最小分辨率是“微秒”，如果你觉得最后几位连续性太差，就表示的机器比较慢
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