Regexp match all pieces of a string with [0-9_]+ and skip optional _[a-z0-9]{24} ?
For instance,
hello word some_stuff other_stuff_607eea770b6d00003d001579 something
Should only capture/match
hello word some_stuff other_stuff something
Here's what I have but it still matches some part of [a-z0-9]{24}
/[a-z]+(_[a-z]+)?(?:[a-z0-9]{24})?/
You're looking to match strings consisting of letters and underscores, whole words, with the end of the word at the end of the string, or a sequence of 24 more letters and/or numbers preceded by an underscore:
\b[a-z_]+(?=_[0-9a-z]{24}|\b)
As you mention php in the comment of the accepted answer, you might also make use of a SKIP FAIL approach:
_[0-9a-z]{24}(*SKIP)(*FAIL)|[a-z]+(?:_[a-z]+)*
In parts, the pattern matches:
_[0-9a-z]{24} Match _ and 24 repetitions of ranges 0-9a-z(*SKIP)(*FAIL) The previous matched should not be part of the match result| or[a-z]+ Match 1+ chars a-z(?:_[a-z]+)* Optionally repeat _ and 1+ chars a-zSee a regex demo and a PHP demo
Example code
$re = '/_[0-9a-z]{24}(*SKIP)(*FAIL)|[a-z]+(?:_[a-z]+)*/';
$str = 'hello word some_stuff other_stuff_607eea770b6d00003d001579 something';
preg_match_all($re, $str, $matches);
var_export($matches[0]);
Output
array (
0 => 'hello',
1 => 'word',
2 => 'some_stuff',
3 => 'other_stuff',
4 => 'something',
)
