regex101: PCRE (Legacy) Match Workspace

<img the literal text <img (case sensitive)

Group with flags gxs(?s:(?!>).)+?

+?repeats the group contents below at least once:

s modifier: single line. Allows a dot to match line terminators

Negative Lookahead(?!>)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

.any character

src=the literal text src= (case sensitive)

Group 1(['"])

Character Class['"]

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

Group src(?P<src>(?:(?!\1).)+?/media/.*?\1)

Non-Capturing Group(?:(?!\1).)+?

+?repeats the group contents below at least once:

Negative Lookahead(?!\1)

\1the text saved by group 1

.any character (except for line terminators)

/media/the literal text /media/ (case sensitive)

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

\1the text saved by group 1

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

Search reference

Regular Expression

<img
(?s:(?!>).)+?
src=(['"])
(?P<src>(?:(?!\1).)+?/media/.*?\1)

New

<div class="my-class">
   <img src="http://my-website.com/cache/media/2017/10/img67.jpeg" class="" alt="test" width="120" height="100">
   <img src="http://my-website.com/cache/2017/10/img68.png" class="" alt="test" width="120" height="100">
   <img src="http://my-website.com/cache/media/2017/10/img69.jpg" class="" alt="test" width="120" height="100">
   <h2 class="uk-margin-top-remove">About us</h2>                
</div>
<img class="" alt="something here" src="blablabla/media/blablabla">

Regular Expressions 101

Regular Expression

Extraction