Regular Expressions 101

^start of line

Group 1(h[1-6]|p|a|img)

1st Alternativeh[1-6]

hthe literal h (104₁₀ / 150₈ / 68₁₆) (case sensitive)

Character Class[1-6]

1-6one character from 1 (49₁₀) to 6 (54₁₀)

2nd Alternativep

pthe literal p (112₁₀ / 160₈ / 70₁₆) (case sensitive)

3rd Alternativea

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

4th Alternativeimg

imgthe literal text img (case sensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\na line-feed (newline) character (ASCII 10)

Character Class[\w\-\.\d]

\wany word character

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\da digit

.*any character (except for line terminators), repeated any number of times

Positive Lookahead(?=\n{0,}?)

\n{0,}?a line-feed (newline) character (ASCII 10), repeated any number of times

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

^(h[1-6]|p|a|img):\n[\w\-\.\d].*(?=\n{0,}?)

New

h3:
Lorem, ipsum dolor, sit amet consectetur adipisicing elit. Voluptate, perspiciatis.

h4:
Lorem, ipsum dolor, sit amet consectetur adipisicing elit. Voluptate, perspiciatis.

p:
Hello this is a paragraph you can add something to our dsle deglet for more and now how to use this for free

img:
http://www.icon.in/logoe/gksoedfkle/dfkeadka/img.jpg

a:
rahul

p:
are you ready for more thing so what do you think

Regular Expression

Extraction