CODEWITHSUNDEEP
regex
spooky
spooky

Reputation: 421

Regex to extract one or more numbers, when there is a match on another word

I'm tearing my hair out with this one - it can't be this complicated, but have looked around on the internet and can't find the answer..

I have a string which could be either of the following:

I want to extract the amount(s) from the string, but only when "day" or "pd" occurs in the string.

What i have so far is...

preg_match_all('/([0-9.]+).*(day|pd)/i', $string, $matches)

.. but it doesn't seem to pull out the 2nd amount. I could narrow it down to..

preg_match_all('/([0-9.]+)/', $string, $matches)

.. but then it would match those which didn't contain "day" or "pd".

Any help would be appreciated!

Upvotes: 1

Views: 62

Answers (2)

Sabuj Hassan
Sabuj Hassan

Reputation: 39365

Try this one:

preg_match_all('/(?=£([0-9.]+).*(?:day|pd))/i', $string, $matches);

Upvotes: 0

anubhava
anubhava

Reputation: 785216

You can use lookahead instead:

if ( preg_match_all('/[0-9.]+(?=.*?(?:day|pd))/i', '£300.00-£325.00 per day', $matches) )
   print_r($matches[0]);

OUTPUT

Array
(
    [0] => 300.00
    [1] => 325.00
)

Upvotes: 1

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