Regular Expressions 101

Pro

^start of line

*the literal (32₁₀ / 40₈ / 20₁₆) , repeated any number of times

Character Class[0-9]{1,7}

{1,7}matches between 1 and 7 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Non-Capturing Group(?: +[0-9]{1,7})*

*repeats the group contents below any number of times:

+the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

Character Class[0-9]{1,7}

{1,7}matches between 1 and 7 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

*the literal (32₁₀ / 40₈ / 20₁₆) , repeated any number of times

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

^ *[0-9]{1,7}(?: +[0-9]{1,7})* *$

New

478 2635478     14587   9652
   14     2  55586 
 214 322 55586123 
1234,456

478 2635478     14587   9652
   14     2  55586 
 214 322 55586123 
1234,456