Extract pattern using regex

Question

I have the following strings:

Name-AB_date, Name-XYZ_date, Name-JK_date, Name-AB_gate_date, Name-XYZ_gate_date, Name-JK_gate_date

I need a regex in PHP that will match the following substrings in each of the above strings

AB, XYZ, JK, AB, XYZ, JK

I am currently using this the regex:

(?<=Name-)(.*)(?=_)

However in the case of

Name-AB_gate_date, Name-XYZ_gate_date and Name-JK_gate_date

It is returning

AB_gate, XYZ_gate and JK_gate

How do I get it to just match the following in these three strings?

AB, XYZ and JK

Permlink: http://www.phpliveregex.com/p/96Y

Avinash Raj · Accepted Answer · 2014-12-29 14:19:47Z

3

.* is greedy by default. Change .* in your regex to .*?. You could try this regex also,

(?<=Name-)[^_]*(?=_)

OR

Without lookahead.

(?<=Name-)[^_]*

answered Dec 29, 2014 at 14:19

Avinash Raj

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Aran-Fey · Accepted Answer · 2014-12-29 14:20:25Z

1

All you need do is to make the (.*) non-greedy.

(?<=Name-)(.*?)(?=_)

answered Dec 29, 2014 at 14:20

Aran-Fey

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Comments

CptVince · Accepted Answer · 2014-12-29 14:37:44Z

1

How would it be with

Name-(\w*?)_

If that fits your needs?

EDIT:

Name-(\w+?)_

If there must be more than one character.

edited Dec 29, 2014 at 14:37

answered Dec 29, 2014 at 14:28

CptVince

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axiac · Accepted Answer · 2014-12-29 15:52:18Z

0

What about this one?

Name-([^_]*)_.*

answered Dec 29, 2014 at 15:52

axiac

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