regex match 2 characters / and --CodePudding

I have a regex that looks like this:

/(((\ |00)32[ ]?(?:\(0\)[ ]?)?)|0){1}(4(60|[789]\d)\/?(\s?\d{2}\.?){2}(\s?\d{2})|(\d\/?\s?\d{3}|\d{2}\/?\s?\d{2})(\.?\s?\d{2}){2})/g

this matches: 32 16/894477 but 32 16-894477 doesn't

this 20150211-0001731015-1 also matches but this shouldn't match

I am trying to fix my regex here:

https://regex101.com/r/LmaIPA/1

CodePudding user response：

 (((\ |00)32[ ]?(?:\(0\)[ ]?)?)|0){1}(4(60|[789]\d)\/?(\s?\d{2}\.?){2}(\s?\d{2})|(\d\/?\s?\d{3}|\d{2}(\/?|\-)\s?\d{2})(\.?\s?\d{2}){2})

I guess I fixed part of it by adding this but let me know if there something else that doesn't work properly :)

CodePudding user response：

There are a lot of capture groups, and some can also be omitted if you don't need them for after processing.

The issue is that for 32 16-894477 you are not matching the hyphen, and you match the larger string as there are no boundaries set so you get a partial match.

Some notes:

You don't have to escape the / when using a different delimiter
You can omit {1} from the pattern
\s can also match a newline, you can use \h if you want to match a horizontal whitespace char
A single space [ ] does not have to be in a character class

You can extend the pattern with adding the hyphen and forward slash to a character class using [/-]?, wrap the whole pattern in a non capture group and assert a whitspace boundary to the right (?:whole pattern here)(?!\S)

A version without the capture groups for a match only:

(?:(?:(?:\ |00)32\h?(?:\(0\)\h?)?|0)(?:4(?:60|[789]\d)/?(?:\h?\d{2}\.?){2}\h?\d{2}|(?:\d/?\h?\d{3}|\d{2}[/-]?\h?\d{2})(?:\.?\h?\d{2}){2}))(?!\S)

Regex demo | Php demo

Php example

$re = '~(?:(?:(?:\ |00)32\h?(?:\(0\)\h?)?|0)(?:4(?:60|[789]\d)/?(?:\h?\d{2}\.?){2}\h?\d{2}|(?:\d/?\h?\d{3}|\d{2}[/-]?\h?\d{2})(?:\.?\h?\d{2}){2}))(?!\S)~';
$str = 'OK 01/07 - 31/07  
OK 0487207339
OK  32487207339
OK 01.07.2016
OK  32 (0)16 89 44 77
OK 016894477
OK 003216894477
OK  3216894477
OK 016/89.44.77
OK  32 16894477
OK 0032 16894477
OK  32 16/894477
NOK  32 16-894477 (this should match)
OK 0479/878810
NOK 20150211-0001731015-1 (this shouldn\'t match)';

preg_match_all($re, $str, $matches);

print_r($matches[0]);

Output

Array
(
    [0] => 0487207339
    [1] =>  32487207339
    [2] =>  32 (0)16 89 44 77
    [3] => 016894477
    [4] => 003216894477
    [5] =>  3216894477
    [6] => 016/89.44.77
    [7] =>  32 16894477
    [8] => 0032 16894477
    [9] =>  32 16/894477
    [10] =>  32 16-894477
    [11] => 0479/878810
)