PHP regex match SKU (several patterns) in string - php

Question

There are names of records in which are mixed several types of SKU that may contains symbols, digits, etc.
Examples:
Name of product 67304-4200-52-21
67304-4200-52 Name of product
67304-4200 Name of product
38927/6437 Name of product
BKK1MBM06-02 Name of product
BKK1MBM06 Name of product
I need to preg_match (PHP) only SKU part with any symbols in any combinations.
So i wrote pattern:
/\d+\/\d+|\d+-?\d+-?\d+-?\d+|\bbkk.*\b/i
It works but not with [BKK*] SKU.
Is it way to combine all this types of SKU together in one pattern?

Answer 1

The pattern \d+-?\d+-?\d+-?\d+ means that there should be at least 4 digits as all the hyphens are optional, but in the example data the part with the numbers have at least a single hyphen, and consist of 2, 3 or 4 parts.
You could repeat the part with the digits and hyphen 1 or more times, and instead of using .*\b use \S*\b to match optional non whitespace chars that will backtrack until the last word boundary.
Note that if you use another delimiter in php than /, you don't have to escape \/
Using a case insensitive match:
\b(?:\d+(?:-\d+)+|bkk\S*|\d+\/\d+)\b
Explanation
\b A word boundary to prevent a partial word match
(?: Non capture group for the alternatives
\d+(?:-\d+)+ Match 1+ digits and repeat 1 or more times matching - and again 1+ digits (or use {1,3} instead of +)
| Or
bkk\S* Match bkk and optional non whitespace characters
| Or
\d+\/\d+ Match 1+ digits / and 1+ digits
) Close the non capture group
\b A word boundary
See a regex101 demo.

Answer 2

Use
\d+(?:\d+(?:-?\d+){3}|\/\d+)|\b[bB][kK][kK][A-Za-z0-9-]*
See regex proof.
REGEX101 EXPLANATION
1st Alternative \d+(?:\d+(?:-?\d+){3}|\/\d+)
\d matches a digit (equivalent to [0-9])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
Non-capturing group (?:\d+(?:-?\d+){3}|\/\d+)
1st Alternative \d+(?:-?\d+){3}
\d matches a digit (equivalent to [0-9])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
Non-capturing group (?:-?\d+){3}
{3} matches the previous token exactly 3 times
- matches the character - with index 4510 (2D16 or 558) literally (case sensitive)
? matches the previous token between zero and one times, as many times as possible, giving back as needed (greedy)
\d matches a digit (equivalent to [0-9])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
2nd Alternative \/\d+
\/ matches the character / with index 4710 (2F16 or 578) literally (case sensitive)
\d matches a digit (equivalent to [0-9])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
2nd Alternative \b[bB][kK][kK][A-Za-z0-9-]*
\b assert position at a word boundary: (^\w|\w$|\W\w|\w\W)
Match a single character present in the list below [bB]
bB matches a single character in the list bB (case sensitive)
Match a single character present in the list below [kK]
kK matches a single character in the list kK (case sensitive)
Match a single character present in the list below [kK]
kK matches a single character in the list kK (case sensitive)
Match a single character present in the list below [A-Za-z0-9-]
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
A-Z matches a single character in the range between A (index 65) and Z (index 90) (case sensitive)
a-z matches a single character in the range between a (index 97) and z (index 122) (case sensitive)
0-9 matches a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)
- matches the character - with index 4510 (2D16 or 558) literally (case sensitive)