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(<a)

<athe literal text <a (case insensitive)

Positive Lookahead(?=((?:[^>"']|"[^"]*"|'[^']*')*?\shref\s*=\s*(['"])\/mycms\/~\/link\.aspx\?_id=)([a-f0-9]{32})(&_z=z\3(?:"[\S\s]*?"|'[\S\s]*?'|[^>]*?)+>))

Group 2((?:[^>"']|"[^"]*"|'[^']*')*?\shref\s*=\s*(['"])\/mycms\/~\/link\.aspx\?_id=)

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

hrefthe literal text href (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)

linkthe literal text link (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

aspxthe literal text aspx (case insensitive)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

_id=the literal text _id= (case insensitive)

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(&_z=z\3(?:"[\S\s]*?"|'[\S\s]*?'|[^>]*?)+>)

&_z=zthe literal text &_z=z (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)(<a)(?=((?:[^>"']|"[^"]*"|'[^']*')*?\shref\s*=\s*(['"])\/mycms\/~\/link\.aspx\?_id=)([a-f0-9]{32})(&amp;_z=z\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" />

Regular Expressions 101

Regular Expression

Extraction