请教php pthread后台处理的问题！！！
我现在想实现，在特定一个请求后创建一个后台线程并一直运行，且该线程不会阻塞当前的请求。
在实现的过程中，发现后台线程会阻塞当前请求，导致页面一直在等待没数据，如果执行Thread::detach的话，会有段错误如下，官方文档不建议使用该方法，不知道是否跟这个错误有关：
[Sun Sep 14 11:13:03.819745 2014] [core:notice] [pid 14343] AH00052: child pid 14847 exit signal Segmentation fault (11)
谢谢！
------解决思路----------------------
不用detach需要等待子进程结束 当然会阻塞请求
detach和现有扩展冲突的可能性很大
建议采用消息队列来实现这种功能
------解决思路----------------------
用啥多线程，直接后台异步运行个脚本完事，就一句代码，并且不会阻塞当前进程
代码如下：
exec("php task.php > /dev/null &")
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