Regex multiple capture groups on same pattern

Question

Lets say I have a string:

12345678

I also have the following patterns:

/^.*$/
/^[0-9]+$/

Both of these patterns match the string. I want to find out that both patterns match the string. I can loop through each pattern and throw in a preg_match but this is too slow.

I want to be able to do something like this:

preg_match_all('/^(?P<pattern1>.*)|(?P<pattern2>[0-9]+)$/', $string, $matches);

This however would give me something like:

[
    'pattern1' => '12345678',
    'pattern2' => ''
]

As you can see, pattern2 comes up empty because pattern 1 has already captured the string.

How would I write my preg_match_all regex so that both pattern1 and pattern2 (and any other patterns) have a chance at matching the same string? However, I am not after a regex rule that will return all patterns if only all patterns match. I want it to return all patterns that do match and all patterns that do not.

edit

Just to further clarify,

The patterns I have given as examples, are just examples.

In my actual scenario, there will be an unknown number of patterns which match unknown strings.

The reason looping through a foreach is too slow is because I will be looping through dozens of patterns with thousands of strings. I can speed up this part of the code by how many patterns there are if they can be combined effectively into one rule per string.

Answer 1

You can use the following trick:

^(?P<pattern1>(?P<pattern2>^[0-9]+$)|.*)$

Since pattern2 is inside pattern1 and separated by | .. each character is checked for both the matches..

See DEMO