Regular Expressions 101

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  • PCRE2 (PHP >=7.3)
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"
\{\{[Pp]n\|([^c])\|([\w\s])([^=])((.)*)\}\}
"
gm
\{ matches the character { literally (case sensitive)
\{ matches the character { literally (case sensitive)
Match a single character present in the list below
[Pp]
Pp matches a single character in the list Pp (case sensitive)
n matches the character n literally (case sensitive)
\| matches the character | literally (case sensitive)
1st Capturing Group
([^c])
Match a single character not present in the list below
[^c]
c matches the character c literally (case sensitive)
\| matches the character | literally (case sensitive)
2nd Capturing Group
([\w\s])
Match a single character present in the list below
[\w\s]
3rd Capturing Group
([^=])
Match a single character not present in the list below
[^=]
4th Capturing Group
((.)*)
\} matches the character } literally (case sensitive)
\} matches the character } literally (case sensitive)
Global pattern flags
g modifier: global. All matches (don't return after first match)
m modifier: multi line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)
Your regular expression does not match the subject string.

Regular Expression
No Match

r"
"
gm

Test String

Substitution

Processing...