Linux在php socket连接时报错：permission denied
解决办法：
# setsebool httpd_can_network_connect=1
参考来源:
http://www.cppblog.com/colorful/archive/2013/07/29/202222.html
http://hi.baidu.com/zwfec/item/64ef5ed9bf1cb3feca0c397c
php socket connect permission denied,布布扣,bubuko.com
php socket connect permission denied
原文：http://www.cnblogs.com/flovey/p/3905279.html