regex101: Date Validation #2

Pro

^start of line

Non-Capturing Group(?:(?:(0?[13578]|1[02])([\-.\/])(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)([\-.\/])(0?[1-9]|[12][0-9]|30)|(0?2)([\-.\/])(0?[1-9]|[12][0-9]))(?:\2|\5|\8)((?:16|[357][26]|[2468][048])(?:[0248][048]|[13579][26])|(?:1[6-9]|[2-9][0-9])(?:0[48]|[13579][26]|[2468][048])|(?:15)(?:84|9[048]))|(?:(0?[13578]|1[02])([\-.\/])(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)([\-.\/])(0?[1-9]|[12][0-9]|30)|(0?2)([\-.\/])(0?[1-9]|1[0-9]|2[0-8]))(?:\12|\15|\18)((?:16|[357][26]|[2468][048])(?:0[1235679]|[13579][01345789]|[2468][1235679])|(?:1[789]|[35679][01345789]|[248][12345679])(?:0[01235679]|[13579][01345789]|[2468][1235679])|(?:15)(?:8[235679]|9[01345789])))

1st Alternative(?:(0?[13578]|1[02])([\-.\/])(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)([\-.\/])(0?[1-9]|[12][0-9]|30)|(0?2)([\-.\/])(0?[1-9]|[12][0-9]))(?:\2|\5|\8)((?:16|[357][26]|[2468][048])(?:[0248][048]|[13579][26])|(?:1[6-9]|[2-9][0-9])(?:0[48]|[13579][26]|[2468][048])|(?:15)(?:84|9[048]))

Non-Capturing Group(?:(0?[13578]|1[02])([\-.\/])(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)([\-.\/])(0?[1-9]|[12][0-9]|30)|(0?2)([\-.\/])(0?[1-9]|[12][0-9]))

1st Alternative(0?[13578]|1[02])([\-.\/])(0?[1-9]|[12][0-9]|3[01])

Group 1(0?[13578]|1[02])

1st Alternative0?[13578]

0?optionally matches the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[13578]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

7the literal 7 (55₁₀ / 67₈ / 37₁₆)

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

2nd Alternative1[02]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[02]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Group 2([\-.\/])

Character Class[\-.\/]

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 3(0?[1-9]|[12][0-9]|3[01])

1st Alternative0?[1-9]

0?optionally matches the 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[01]

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

Character Class[01]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

2nd Alternative(0?[469]|11)([\-.\/])(0?[1-9]|[12][0-9]|30)

Group 4(0?[469]|11)

1st Alternative0?[469]

0?optionally matches the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[469]

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

9the literal 9 (57₁₀ / 71₈ / 39₁₆)

2nd Alternative11

11the literal text 11

Group 5([\-.\/])

Character Class[\-.\/]

Group 6(0?[1-9]|[12][0-9]|30)

3rd Alternative(0?2)([\-.\/])(0?[1-9]|[12][0-9])

Non-Capturing Group(?:\2|\5|\8)

Group 10((?:16|[357][26]|[2468][048])(?:[0248][048]|[13579][26])|(?:1[6-9]|[2-9][0-9])(?:0[48]|[13579][26]|[2468][048])|(?:15)(?:84|9[048]))

2nd Alternative(?:(0?[13578]|1[02])([\-.\/])(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)([\-.\/])(0?[1-9]|[12][0-9]|30)|(0?2)([\-.\/])(0?[1-9]|1[0-9]|2[0-8]))(?:\12|\15|\18)((?:16|[357][26]|[2468][048])(?:0[1235679]|[13579][01345789]|[2468][1235679])|(?:1[789]|[35679][01345789]|[248][12345679])(?:0[01235679]|[13579][01345789]|[2468][1235679])|(?:15)(?:8[235679]|9[01345789]))

$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

25 tokens

Regular Expression

^(?:(?:(0?[13578]|1[02])([\-.\/])(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)([\-.\/])(0?[1-9]|[12][0-9]|30)|(0?2)([\-.\/])(0?[1-9]|[12][0-9]))(?:\2|\5|\8)((?:16|[357][26]|[2468][048])(?:[0248][048]|[13579][26])|(?:1[6-9]|[2-9][0-9])(?:0[48]|[13579][26]|[2468][048])|(?:15)(?:84|9[048]))|(?:(0?[13578]|1[02])([\-.\/])(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)([\-.\/])(0?[1-9]|[12][0-9]|30)|(0?2)([\-.\/])(0?[1-9]|1[0-9]|2[0-8]))(?:\12|\15|\18)((?:16|[357][26]|[2468][048])(?:0[1235679]|[13579][01345789]|[2468][1235679])|(?:1[789]|[35679][01345789]|[248][12345679])(?:0[01235679]|[13579][01345789]|[2468][1235679])|(?:15)(?:8[235679]|9[01345789])))$

Unit Tests

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