Regular Expressions 101

Character Class[0-9]{2}

{2}matches exactly 2 characters from the set below:

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

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

Group 1([05][1-9]|[16][02])

1st Alternative[05][1-9]

Character Class[05]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

2nd Alternative[16][02]

Character Class[16]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

Character Class[02]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

Group 2(0[1-9]|[12][0-9]|3[0-1])

1st Alternative0[1-9]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

2nd Alternative[12][0-9]

Character Class[12]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0-9]

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

3rd Alternative3[0-1]

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

Character Class[0-1]

0-1one character from 0 (48₁₀) to 1 (49₁₀)

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

\/?optionally matches the literal / (47₁₀ / 57₈ / 2F₁₆)

Character Class[0-9]{3,4}

{3,4}matches between 3 and 4 characters from the set below:

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

Global pattern flags

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

[0-9]{2} ?([05][1-9]|[16][02]) ?(0[1-9]|[12][0-9]|3[0-1]) ?\/?[0-9]{3,4}

New

821206/0351 
82 12 06 0351 
721206 0351 
82 82 23/3222  
82 52 12/342
825212342
82 61 45 2222
821206 0351