结合2个正则表达式

Question

I'm looking to try and combine 2 regex expressions.

$test = preg_replace('/\[.*?\]/', '', $test);   

I use this to remove any square brackets and words in between the brackets..

$test = preg_replace ('/[\[\]=]+/', '', $test);

I use this to strip any = [ ] symbols from my string.

doing this individually seems to be fine, but I'd like to combine them. Any ideas how I can do that.. everything I've tried has broken both..

Thanks

Answer 1

Use an alternation:

$test = preg_replace('/\[.*?\]|[\[\]=]/', '', $test);

The ordering is here important, so that at first matching brackets, and their content, are removed. This should work fine as long as there are no nested brackets.

So, this expression will match either \[.*?\] OR [\[\]=]