本文分析了基于命令行执行带参数的php脚本并取得参数的方法。分享给大家供大家参考,具体如下:
一、为什么我们要在命令行下运行php脚本呢?
个人理解,主要有二个原因:
1. 利用crontab去跑php,可以给服务器减压,当然在这里有一个条件,就是实时性要求不高。比如:sns中的好友动态,这个实时要求不高,但是数据量比较大,这个时候定时跑的话,会给web服务器,数据库服务器分担不小的压力。
2. 就是我们要定时去完成某一事情,比如:我要删除一个月前,用户留言,这个时候,写的php脚本在crontab去执行,一天跑一次就行了。而不是手动去执行php程序。
二、命令行下执行带参数php,并取得参数
有一点很重要, 代码如下:
zhangying@ubuntu:~$ sh c1.sh aaa bbb
我向c1.sh传了二个参数aaa bbb,shell会得到三个参数,$0为文件本身,$1为参数1,$2为参数2。不同的是,php得到的是以数组的形势,而shell不是。
更多关于PHP相关内容感兴趣的读者可查看本站专题:《PHP基本语法入门教程》及《php面向对象程序设计入门教程》
希望本文所述对大家PHP程序设计有所帮助。

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