PHP Regex the nested section based on defined parent

Question

I am trying to match a nested content section of the config based on the alias.

I have the base prototype working for matching single aliases over here: https://regex101.com/r/1vwKsx/1 (section correctly matched to: 'template_path_stack' =>)

HOWEVER, I want to select a section (which is re-used in the file) based on the section container. In the link above, I need to only match the section which is inside: controllers => factories.

The problem is that the regex matches both (the correct one and the one from the outside). https://regex101.com/r/IrV0SN/1

Current regex:

('factories' => )(\[((?>[^\[\]]++|(?2))*)\])

@WiktorStribiżew Damn, you are good. That is perfect thanks! Add an answer and I will mark it correctly. — divix
– divix, Commented Nov 28, 2021 at 22:58

Wiktor Stribiżew · Accepted Answer · 2021-11-28 22:59:48Z

3

You may add an obligatory prefix to the regex and discard the matched text using \K operator:

'controllers' => \[\s*\K('factories' => )(\[((?>[^][]++|(?2))*)])

See the regex demo.

Here,

'controllers' => \[ - a 'controllers' => [ text
\s* - zero or more whitespaces
\K - discards the text matched so far from the current overall match memory buffer.

answered Nov 28, 2021 at 22:59

Wiktor Stribiżew

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