PHP与Linux进程间的通信
进程间通信估计是公司考察应届毕业生的必考点（嵌入式行业），当然很多公司考的是算法。
不查阅资料，我脑子里能想到的
[1] 管道， （有名，无名）
[2] 父子进程
[3] System V (消息队列， 共享内存，信号量)
[4] Socket(本地，网络)
[5] 信号
内核与应用程序
[1] 共享内存
[2] /proc/文件系统
这里说道的php与linux进程间的通信，采用消息队列来实现。
但是问题来了lighttpd权限是lighttpd这个用户的， linux进程的权限是root的， 如果在/tmp目录下建立建立message queue会导致lighttpd发送消息失败。
解决方法：在lighttpd的用户权限的目录下建立消息队列，权限是0666
版权声明：本文为博主原创文章，未经博主允许不得转载。
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