Regular Expressions 101

^start of line

Positive Lookahead(?=(?:[^A-Z]*[A-Z]){2})

Non-Capturing Group(?:[^A-Z]*[A-Z]){2}

{2}repeats the group contents below exactly 2 times:

Negated Character Class[^A-Z]*

*matches any number of characters outside the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Positive Lookahead(?=(?:[^a-z]*[a-z]){2})

Non-Capturing Group(?:[^a-z]*[a-z]){2}

{2}repeats the group contents below exactly 2 times:

Negated Character Class[^a-z]*

*matches any number of characters outside the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

Character Class[a-z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

Positive Lookahead(?=(?:\D*\d){2})

Non-Capturing Group(?:\D*\d){2}

{2}repeats the group contents below exactly 2 times:

\D*any character that is not a Unicode decimal digit, repeated any number of times

\da Unicode decimal digit

Positive Lookahead(?=(?:[^$%&!#]*[$%&!#]){2})

Non-Capturing Group(?:[^$%&!#]*[$%&!#]){2}

{2}repeats the group contents below exactly 2 times:

Negated Character Class[^$%&!#]*

*matches any number of characters outside the set below:

$the literal $ (36₁₀ / 44₈ / 24₁₆)

%the literal % (37₁₀ / 45₈ / 25₁₆)

&the literal & (38₁₀ / 46₈ / 26₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

Character Class[$%&!#]

$the literal $ (36₁₀ / 44₈ / 24₁₆)

%the literal % (37₁₀ / 45₈ / 25₁₆)

&the literal & (38₁₀ / 46₈ / 26₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

.{8,}any Unicode character (except for line terminators), repeated at least 8 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

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^
(?=(?:[^A-Z]*[A-Z]){2})
(?=(?:[^a-z]*[a-z]){2})
(?=(?:\D*\d){2})
(?=(?:[^$%&!#]*[$%&!#]){2})
.{8,}
$

New

a9T%5Q$f
a9T%5r$f