php代码exec("kill $pid"$op,$returns)没法杀死linux虚拟机下的进程
php代码exec("kill $pid",$op,$returns)无法杀死linux虚拟机下的进程
如题，我在linux下写php代码exec("kill $pid",$op,$returns)，通过pid杀进程，执行后，返回的一直都是“1”，就是说一直执行不成功，执行完后进程id还在。执行kill调用的文件我已经给了最大权限了。网上有说是php.ini的配置问题啥的，但找了一天了也没找到任何值得参考的意见，求各位大神给些意见啊！！！！！
------解决思路----------------------
没有权限。
把apache的权限设为root看看。
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