PHP CLI有几秒钟的延迟 [英] PHP CLI has a few seconds delay

问题描述

当我在CLI模式下运行PHP（PHP 5.6.6在CentOS 6.5下运行作为VM使用VirtualBox）它有几秒的延迟，即使我只检查版本，并有php.ini文件被禁用：

When I run PHP in the CLI mode (PHP 5.6.6 under CentOS 6.5 running as VM using VirtualBox) it has a few seconds of delay even if I only check version and there is php.ini file disabled:

time php -n -v
PHP 5.6.6 (cli) (built: Apr  2 2015 14:18:24) 
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2015 Zend Technologies

real    0m5.066s
user    0m0.012s
sys     0m0.006s

推荐答案

问题是与DNS调用PHP是相关的。请参见此处和此处。

The problem is related to DNS call PHP is doing. See here and here.

解决方案是添加主机名

[root@dev-machine ~]# hostname
dev-machine.com

到/ etc / hosts：

to /etc/hosts:

127.0.0.1 dev-machine.com

结果：

time php -n -v
PHP 5.6.6 (cli) (built: Apr  2 2015 14:18:24) 
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2015 Zend Technologies

real    0m0.018s
user    0m0.012s
sys     0m0.004s

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