Regular Expressions 101

Explanation
Pro

^start of string

ISAthe literal text ISA (case sensitive)

Non-Capturing Group(?:[^*]*[*][^*]*){8}

{8}repeats the group contents below exactly 8 times:

Negated Character Class[^*]*

*matches any number of characters outside the set below:

*the literal * (42₁₀ / 52₈ / 2A₁₆)

Character Class[*]

*the literal * (42₁₀ / 52₈ / 2A₁₆)

Negated Character Class[^*]*

*matches any number of characters outside the set below:

*the literal * (42₁₀ / 52₈ / 2A₁₆)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

Group 1(\d+)

\d+a digit, repeated at least once

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Detailed match information will be displayed here automatically.

25 tokens

^ISA(?:[^*]*[*][^*]*){8}\*(\d+)\*

New

ISA *00* *00* *ZZ*SOME STRING *ZZ*99999999 *130605* 2239*|*00501*000000001*0*P*>

REF*TJ*12345677*

REF*PQ*23432211

LX*1

ISA *00* *00* *ZZ*SOME STRING *ZZ*99999999 *130605* 2239*|*00501*000000001*0*P*>

REF*TJ*12345677*

REF*PQ*23432211

LX*1