Regular Expressions 101

Character Class[\w,=/:.-]+

+matches at least one character from the set below:

\wa Unicode word character

,the literal , (44₁₀ / 54₈ / 2C₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:jpe?g|png|gif)

1st Alternativejpe?g

jpthe literal text jp (case sensitive)

e?optionally matches the literal e (101₁₀ / 145₈ / 65₁₆) (case sensitive)

gthe literal g (103₁₀ / 147₈ / 67₁₆) (case sensitive)

2nd Alternativepng

pngthe literal text png (case sensitive)

3rd Alternativegif

gifthe literal text gif (case sensitive)

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

u modifier: unicode. Treats the pattern and subject as UTF-16

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Search reference

Regular Expression

[\w,=/:.-]+\.(?:jpe?g|png|gif)

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