regex-group Examples and Free Source Code

Extract usefull data from html with regex & php...

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What is the Regular Expression to get all the newline characters from the end of the string...

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Why my optional captured group in my regex does not work?...

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PHP Regex to Capture mm:ss.uuu AND hh:mm:ss.uuu...

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Search for three words written in different "shapes" using grep...

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Is there a delimiter/disambiguation syntax for submatch group references in JavaScript string replac...

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Why are there extra parenthesis in this regex substitution?...

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Regex check if from one string to other string contains seaching string...

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How to exclude matched group after a non-matched group - regex...

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Find number of Instances for few words in string while ignoring other few words using regex...

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Problem with long named capturing groups regex patterns...

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Regex pattern to find multiple timestamp formats avoid single numbers alone...

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regex to match first n lines after a specific word in Google Spreadsheet...

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How to create a conditional RegEx to check product input?...

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Regex to extract first word after last colon without space and with full match...

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JavaScript replaceAll case-insensitive search using variable rather than a string...

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regex to extract a string between 5th and 6th colon without space...

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need help on regex when using a quantifier after a group...

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How to loop through, match and replace?...

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Why the performance of two regex using capturing groups varies so differently?...

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Are long regular expressions worse than short ones?...

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join different regex possibilities into one...

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Javascript Regex to match expression except another expression...

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Named regular expression group "(?P<group_name>regexp)": what does "P" sta...

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How to only use input in pattern once?...

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Regexp to match multiline sections starting with identifier up to an end identifier...

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How to match a pattern after a pattern in regex, using groups, negations, lookarounds...

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Regex match group with elements in random order...

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Restricting overall number of characters within multiple groups...

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I am finding an email from from a given string and returning the email that exists in the string...

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