Regular Expressions 101

Pro

^start of line

Non-Capturing Group(?:\b[\w+=,.@-]{1,64}\b\s{0,1}){1,5}

{1,5}repeats the group contents below between 1 and 5 times:

\ba Unicode word boundary

Character Class[\w+=,.@-]{1,64}

{1,64}matches between 1 and 64 characters from the set below:

\wa Unicode word character

+the literal + (43₁₀ / 53₈ / 2B₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

@the literal @ (64₁₀ / 100₈ / 40₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\ba Unicode word boundary

\s{0,1}optionally matches a Unicode whitespace character

$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

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25 tokens

^(?:\b[\w+=,.@-]{1,64}\b\s{0,1}){1,5}$

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