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什么是系统的环境变量?phpstudy安装完成后计算机环境变量的设置

Jun 13, 2016 pm 12:14 PM
apache cmd gt httpd phpstudy

什么是系统的环境变量?phpstudy安装完成后电脑环境变量的设置

所谓环境变量,可以理解为,预先准备好的一个装有命令的路径。这样我们在cmd下直接输入命令,那么此时,系统会从环境变量中的路径下去找这个命令。不然的话,我们要执行某个命令,就需要写出这个命令所在的完整路径,简直是噩梦。所以,设置环境变量的意思,就是预先把这个路径告诉系统。

比如,我们安装完phpstudy后,一般需要使用apache和mysql里的一些命令,找到这个安装程序,找到apache\bin下的任意一个命令,右击属性直接复制那个路径。然后在我的计算机>>>属性>>>高级系统设置>>>高级>>>环境变量>>>系统变量里的path>>>编辑即可。


测试:打开cmd,输入httpd -t检查配置文件的语法问题。此处只需要输入httpd这个命令即可,不仅连路径,而且连后缀.exe都省略掉了。


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