Question

[foreach:regex]
    [r_hello]
[/foreach]

Trying to match the above: regex (word between : and ]) will be $1 and anything between [foreach:regex] and [/foreach] will be $2.

So far I have this: /\[foreach:(.*)\](.*)\[\/foreach\]/s

But I’m getting this error: Notice: Undefined index: regex] [r_hello

Answer 1

Try:

/\[foreach:([^\]]*)\]\s*\[([^\]]*)\]\s*\[\/foreach\]/s

http://phpfiddle.org/main/code/7av-ypa

The problems were:

1. You were greedy matching one or more of any character, which can be avoided here
2. You weren’t accounting for the whitespace (newlines and tabs)
3. You weren’t accounting for the square brackets arounf the central item.