为基于php的CMS编写CLI（类似于Drush）

Question

I've been working on a CMS for a few years and I actually implemented a jquery-based console in the admin area, where you could do some handy things like enable/disable modules and so on.

I recently fiddled around with drupal and decided to install cygwin along with drush. I tried googling around but figured this might be an unusual question: How does one go about creating a CLI for a php-based CMS? And exactly how does exactly drush worK? I mean, I know that it runs from the command line as a batch script in windows. But how does it interact with PHP and so on?

I do know some basic C# but this shouldn't be very hard once i figure out how this fits together. (php, sql, etc).

Any help is appreciated, thanks in advance :)

Answer 1

Basically you can write a simple CLI shell with a infinite loop plus a 'exec()' or 'shell_exec()' PHP functions. you should get the user commands and send it to shell_exec() function for execute in a system shell and return the output of that to the user.

i.e:

while(TRUE){

if($input != 'exit') $output=shell_exec($input); else break;

echo $output; }

• you can add other options and customize this simple loop.
• you can call external programs with 'exec()' function.