regex101: PCRE (Legacy) Substitution Workspace

Pro

Positive Lookbehind(?<=src=")

src="the literal text src=" (case sensitive)

Group 1(.*?)

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

\s+any whitespace character, repeated at least once

Group 2(.*?)

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

Positive Lookahead(?=\.)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

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

25 tokens

Regular Expression

(?<=src=")(.*?)\s+(.*?)(?=\.)

New

text here
<img src="foo_image.gif" height="42" width="42">
text here
<img height="42" width="42" src="another_foo image.png" height="42" width="42">
text here
<img src="/path/to/yetanother foo image.jpg" height="42" width="42">
text here

Extraction

text here
<img src="foo_image.gif" height="42" width="42">
text here
<img height="42" width="42" src="another_foo image.png" height="42" width="42">
text here
<img src="/path/to/yetanother foo image.jpg" height="42" width="42">
text here