Preg_Split delim number and string

Question

I have a problem with preg_split. I need a regex to split my string into number and character. An example of my string is:

1_AB_CD_2_ABC_3_ABD

and I want a result splitted:

1
AB_CD
2
ABC
3
ABD

I've tried with this regex expression but this one not work:

 preg_split("/(^\d)(?=_)|(?<=_)(\d)(?=_)/",$sequence,PREG_SPLIT_DELIM_CAPTURE).

Hi @stribizhev i've tried your code with a real example but this is the result: https://ideone.com/WL2Vxs. Thanks anyway... — Vincenzo Di Roberto, May 04 '15 at 12:38
@VincenzoDiRoberto: what about https://ideone.com/MLA5gk? Here is a regex101 demo: https://regex101.com/r/hL6tS5/1 — Wiktor Stribiżew, May 04 '15 at 13:17

vks · Answer 1 · 2015-05-04T12:50:54.873

1

(?<=\d)_(?=[A-Z0-9]{2})|(?<=[A-Z0-9]{2})_(?=\d)

Try this.See demo.

$returnValue = preg_split('/(?<=\\d)_(?=[A-Z0-9]{2})|(?<=[A-Z0-9]{2})_(?=\\d)/', '1_AB_CD_2_ABC_3_ABD', -1, PREG_SPLIT_NO_EMPTY);

edited May 04 '15 at 12:50

answered May 04 '15 at 07:41

vks

I've tried your solution but not work. :( Splitted string are incorrect – Vincenzo Di Roberto May 04 '15 at 07:51
I've tried your solution: ($result=preg_split("/(?<=\d)_(?=[A-Z])|(?<=[A-Z])_(?=\d)/",$sequence)) but not work. :( Splitted string are incorrect : 1_ITBI1303000100_2_ITTO10051004_3_ITTO10060018_4_ITBI1303000100 return with this expression "1 ITBI1303000100_2 ITTO10051004_3 ITTO10060018_4 ITBI1303000100 ".... – Vincenzo Di Roberto May 04 '15 at 07:57
Sorry but with preg_split still doesn't work. I've tried with or without PREG_DELIM_CAPTURE $result=preg_split("/(?<=\\d)_(?=[A-Z])|(?<=[A-Z])_(?=\\d)/",$sequence,PREG_SPLIT_DELIM_CAPTURE) $result=preg_split("/(?<=\\d)_(?=[A-Z])|(?<=[A-Z])_(?=\\d)/",$sequence) – Vincenzo Di Roberto May 04 '15 at 08:10
@VincenzoDiRoberto it is working for me.I have included the working code as well in the naswer.dont know what's d issue at ur end :( – vks May 04 '15 at 08:12
i have already tried your demo with real string and your demo doesn't work :( You can test it with this string:1_ITBI1303000100_2_ITTO10051004_3_ITTO10060018_4_ITBI1303000100 – Vincenzo Di Roberto May 04 '15 at 12:46
it works well in every case but not in this one: "1_HUB _SIT_RIVALTA_2_HUB_3SAAA_3_IT8739292" because there is a possibility that a segment has number and string and can start with number.... i know it is very difficult :( – Vincenzo Di Roberto May 04 '15 at 13:25

1 Answers1