Hi
On 6/26/24 14:14, Gina P. Banyard wrote:
Regarding explode($delimiter, $str)[0] — unless it is to be special-cased
during compilation —it is a really inefficient way to find the substring up to
the first character, especially for large strings and/or when in a tight loop
where the explode is contained in a called function
Then use a regex: https://3v4l.org/SGWL5
Or a combination of strpos and substr.
I'd bet that both of these solutions would use less memory, and I would guess
the PCRE one should also be better for performance (although not benchmarked)
as it is highly specialized in that task.
There are *plenty* of solutions to the specific problem you pose here, and thus
many different solutions more or less appropriate.
FWIW: `explode()` also has a third parameter to limit the number of
segments to return. If you always want just one, you can set the
parameter to `2` to prevent further processing from happening after
encountering the first delimiter.
Best regards
Tim Düsterhus
