Regular Expressions 101

(?i)applies the following effective flags to the remainder of the pattern: gmi

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:JPG|PNG|DOC|DOCX)

1st AlternativeJPG

JPGthe literal text JPG (case insensitive)

2nd AlternativePNG

PNGthe literal text PNG (case insensitive)

3rd AlternativeDOC

DOCthe literal text DOC (case insensitive)

4th AlternativeDOCX

DOCXthe literal text DOCX (case insensitive)

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?i)\.(?:JPG|PNG|DOC|DOCX)

New

https://needmode.com/products/350e0f54c3480dc035d6db5e7ef898711d5f4ebc_1683455668.jpg

https://dkstatics-public.digikala.com/digikala-products/350e0f54c3480dc035d6db5e7ef898711d5f4ebc_1683455668.jpg?x-oss-process=image/resize,m_lfit,h_800,w_800/quality,q_90

https://meghdadit.com/_image.ashx?i=%252ffiles%252fproduct%252f4778c8kbqjb7k18sqydnkztp4yzi0jlaug5j5jtybsmuw0lzq2%255blarge%255d.jpg

Regular Expression

Substitution