regex101: PCRE (Legacy) Substitution Workspace

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

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

Group 1(<img)

<imgthe literal text <img (case insensitive)

Positive Lookahead(?=((?:[^>"']|"[^"]*"|'[^']*')*?\ssrc\s*=\s*(['"])\/mycms\/~\/media\/)([a-f0-9]{32})(\.ashx\3(?:"[\S\s]*?"|'[\S\s]*?'|[^>]*?)+>))

Group 2((?:[^>"']|"[^"]*"|'[^']*')*?\ssrc\s*=\s*(['"])\/mycms\/~\/media\/)

Non-Capturing Group(?:[^>"']|"[^"]*"|'[^']*')*?

*?repeats the group contents below any number of times:

1st Alternative[^>"']

Negated Character Class[^>"']

>the literal > (62₁₀ / 76₈ / 3E₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

2nd Alternative"[^"]*"

"the literal " (34₁₀ / 42₈ / 22₁₆)

Negated Character Class[^"]*

*matches any number of characters outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

3rd Alternative'[^']*'

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Negated Character Class[^']*

*matches any number of characters outside the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

\sany whitespace character

srcthe literal text src (case insensitive)

\s*any whitespace character, repeated any number of times

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\s*any whitespace character, repeated any number of times

Group 3(['"])

Character Class['"]

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

mycmsthe literal text mycms (case insensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

~the literal ~ (126₁₀ / 176₈ / 7E₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

mediathe literal text media (case insensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 4([a-f0-9]{32})

Character Class[a-f0-9]{32}

{32}matches exactly 32 characters from the set below:

a-fone character from a (97₁₀) to f (102₁₀) (case insensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Group 5(\.ashx\3(?:"[\S\s]*?"|'[\S\s]*?'|[^>]*?)+>)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

ashxthe literal text ashx (case insensitive)

\3the text saved by group 3

Non-Capturing Group(?:"[\S\s]*?"|'[\S\s]*?'|[^>]*?)+

+repeats the group contents below at least once:

1st Alternative"[\S\s]*?"

"the literal " (34₁₀ / 42₈ / 22₁₆)

Character Class[\S\s]*?

*?matches any number of characters from the set below:

\Sany non-whitespace character

\sany whitespace character

"the literal " (34₁₀ / 42₈ / 22₁₆)

2nd Alternative'[\S\s]*?'

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Character Class[\S\s]*?

*?matches any number of characters from the set below:

\Sany non-whitespace character

\sany whitespace character

'the literal ' (39₁₀ / 47₈ / 27₁₆)

3rd Alternative[^>]*?

Negated Character Class[^>]*?

*?matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

\s+any whitespace character, repeated at least once

Non-Capturing Group(?:"[\S\s]*?"|'[\S\s]*?'|[^>]*?)+

+repeats the group contents below at least once:

1st Alternative"[\S\s]*?"

"the literal " (34₁₀ / 42₈ / 22₁₆)

Character Class[\S\s]*?

"the literal " (34₁₀ / 42₈ / 22₁₆)

2nd Alternative'[\S\s]*?'

3rd Alternative[^>]*?

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Search reference

Regular Expression

(?i)(<img)(?=((?:[^>"']|"[^"]*"|'[^']*')*?\ssrc\s*=\s*(['"])\/mycms\/~\/media\/)([a-f0-9]{32})(\.ashx\3(?:"[\S\s]*?"|'[\S\s]*?'|[^>]*?)+>))\s+(?:"[\S\s]*?"|'[\S\s]*?'|[^>]*?)+>

New

<a hello world href="/mycms/~/link.aspx?_id=D9423CEFED254610A5DC6B096A297E17&amp;_z=z" class>
...
</a>

<img hello world src="/mycms/~/media/B1FB91AC357347BD84913D56B8791D03.ashx" alt="" width="690" height="202" />

Substitution

$1$2key{$4}$5