目录回忆一下OS是如何打开一个文件的？如何理解man flock中的这段文字呢？劝告锁总结flock申请的锁对象是处于 内核空间层的全局级别的open file table中的。
I have PHP function which checks to see if variables are set and then adds them onto my SQL query. However I am don\'t seem to be getting any results back?
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