regex101: PCRE2 (PHP) Match Workspace

^start of line

Group 1(0?[1-9]{1}|[1]{1}[0-7]{1})

1st Alternative0?[1-9]{1}

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

Character Class[1-9]{1}

{1}matches one character from the set below:

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

2nd Alternative[1]{1}[0-7]{1}

Character Class[1]{1}

{1}matches one character from the set below:

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[0-7]{1}

{1}matches one character from the set below:

0-7one character from 0 (48₁₀) to 7 (55₁₀)

Group 2(\s|[-])?

?repeats the group contents below at most once:

1st Alternative\s

\sany whitespace character

2nd Alternative[-]

Character Class[-]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 3(y(\s?)o|yr([sz]?)|year([sz]?)((\s|[-])?(old)?)|y)

1st Alternativey(\s?)o

ythe literal y (121₁₀ / 171₈ / 79₁₆) (case sensitive)

Group 4(\s?)

\s?optionally matches any whitespace character

othe literal o (111₁₀ / 157₈ / 6F₁₆) (case sensitive)

2nd Alternativeyr([sz]?)

yrthe literal text yr (case sensitive)

Group 5([sz]?)

Character Class[sz]?

?matches at most one character from the set below:

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

zthe literal z (122₁₀ / 172₈ / 7A₁₆) (case sensitive)

3rd Alternativeyear([sz]?)((\s|[-])?(old)?)

yearthe literal text year (case sensitive)

Group 6([sz]?)

Character Class[sz]?

?matches at most one character from the set below:

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

zthe literal z (122₁₀ / 172₈ / 7A₁₆) (case sensitive)

Group 7((\s|[-])?(old)?)

Group 8(\s|[-])?

?repeats the group contents below at most once:

1st Alternative\s

\sany whitespace character

2nd Alternative[-]

Character Class[-]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 9(old)?

?repeats the group contents below at most once:

oldthe literal text old (case sensitive)

4th Alternativey

Group 10((\s?|[-])(old)?)

$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

Search reference

Regular Expression

^(0?[1-9]{1}|[1]{1}[0-7]{1})(\s|[-])?(y(\s?)o|yr([sz]?)|year([sz]?)((\s|[-])?(old)?)|y)((\s?|[-])(old)?)$

New

10y
10yr
10yrz
10yrs
10 y
10 yr
10 yo
13 y o
09y
9y
09 y
9yr
9yo
9year
9 years old 
9 yearz old
17 yo
17year
17 years
17 yearz
100years
13
10 your
18 yr
18yr
10 your
17-year-old
17-years-old