Regular Expressions 101

Explanation

Pro

Non-Capturing Group(?: 0(?=1|\b)| 1(?=2|\b)| 2(?=3|\b)| 3(?=4|\b)| 4(?=5|\b)| 5(?=6|\b)| 6(?=7|\b)| 7(?=8|\b)| 8(?=9|\b)| 9\b ){5}

{5}repeats the group contents below exactly 5 times:

1st Alternative 0(?=1|\b)

0the literal text 0

Positive Lookahead(?=1|\b)

1st Alternative1

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

2nd Alternative\b

\ban ASCII word boundary

2nd Alternative 1(?=2|\b)

1the literal text 1

Positive Lookahead(?=2|\b)

1st Alternative2

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

2nd Alternative\b

\ban ASCII word boundary

3rd Alternative 2(?=3|\b)

2the literal text 2

Positive Lookahead(?=3|\b)

1st Alternative3

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

2nd Alternative\b

\ban ASCII word boundary

4th Alternative 3(?=4|\b)

3the literal text 3

Positive Lookahead(?=4|\b)

1st Alternative4

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

2nd Alternative\b

\ban ASCII word boundary

5th Alternative 4(?=5|\b)

4the literal text 4

Positive Lookahead(?=5|\b)

1st Alternative5

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

2nd Alternative\b

\ban ASCII word boundary

6th Alternative 5(?=6|\b)

5the literal text 5

Positive Lookahead(?=6|\b)

1st Alternative6

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

2nd Alternative\b

\ban ASCII word boundary

7th Alternative 6(?=7|\b)

8th Alternative 7(?=8|\b)

9th Alternative 8(?=9|\b)

10th Alternative 9\b

Global pattern flags

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

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

(?: 0(?=1|\b)| 1(?=2|\b)| 2(?=3|\b)|  3(?=4|\b)|  4(?=5|\b)|  5(?=6|\b)|  6(?=7|\b)|  7(?=8|\b)|  8(?=9|\b)|  9\b  ){5}

New

123 321 56789 890123 321098 134 333 421 12345 6789 
15246
1234567890
67890
12345
23456
34567
456789
56789

Extraction

123 321 56789 890123 321098 134 333 421 12345 6789 
15246
1234567890
67890
12345
23456
34567
456789
56789