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Questions - regex-lookarounds

Improving the performance of an PCRE Regex Pattern

I have the below regex here which is written to support the PRCE/PRCE2 format. However, this throws the following error “Evaluation takes too long. Please check your regular expression.” Is there any ...
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Kamesh

regex

regex-lookarounds

pcre

regex-group

Votes: 0

Answers: 2

Latest Answer

You may try this refactored regex: \b(?>x|order(?>[\W_]*number)?[\W_]*)\d+(*SKIP)(*F)|(?=(?>[._ –-]*\d){9})(?>(?>9|6{3}|0{3}|(?>\d\D*){3}00|(?>\d\D*){5}0{4})(*SKIP)(*F)|\d(?>\D...
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anubhava

Regex expression to match on hyphens in words within sentence based on occurrences of hyphen

I am trying to match on hyphens in a word but only if the hyphen occurs in said word say more than once So in the phrase "Step-By-Step" the hyphens would be matched whereas in the phrase &qu...
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Ryanmc174

java

regex

regex-lookarounds

Votes: 0

Answers: 2

Latest Answer

This matches at least two words each followed by hyphen, followed by another word (I'm assuming you don't want to allow hyphen at the very beginning or end, only between words). (\w+-){2,}\w+
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Barmar

Regex to match everything inside brackets ignore nested

I am looking for a regex rule to match everything inside square brackets, including the brackets and ignoring the possible brackets inside. E.g. from: [value] in the [text[42]] and [1[2[3]]]! I need ...
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Kiramm

.net

regex

regex-lookarounds

Votes: 0

Answers: 1

Latest Answer

You can use \[(?>[^][]+|(?<c>)\[|(?<-c>)])+] See the regex demo. Details: \[ - a [ char (?>[^][]+|(?<c>)\[|(?<-c>)])+ - one or more occurrences of [^][]+| - one or mor...
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Wiktor Stribiżew

Negative lookahead regex for apache mod header cookies - keep certain cookies

Trying to modify an apache request header directive, I need to use a negative lookahead regex to keep only certain cookies. Test string someCookie=someValue; anotherCookie=yada61; cookieToKeep1=myValu...
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djgavboy

regex

apache

.htaccess

cookies

regex-lookarounds

Votes: 0

Answers: 1

Latest Answer

You can use this directive to remove all cookies except cookieToKeep1 and cookieToKeep2: RequestHeader edit* Cookie "\b(?!(?:cookieToKeep1|cookieToKeep2)=)([^;=]+=[^;]*(?:; *|$))" "&quo...
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anubhava

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