Remove multiple white spaces between words and replace it with the char of your choosing.

Extract parts of an URL.

RegEx for an .htaccess rewrite into a subfolder without provoking a 'too many redirects' error

^((?!proposed_).)*((project|task)_details) matches: project_details task_details...

This expression matches human genomic coordinates, similat to those being used by genome browsers (e.g. the UCSC Genome Browser). It can match: chromosome, chromosome start, chromosome start end, chromosome start end reference sequence, chromosome start end reference sequence alternative sequence. T...

URL MATCH

Eircode validation for new postcodes identifiers in Republic of Ireland. Case-insensetive for easier user input. Added optional space separator to follow same pattern as in UK post codes and in examples used in eircode spec.

It won't match single line comments like this one: //* This comment won't be match */ ^ see the double / Works in PHP without the g modifier.

PHP Basic coding standard Naming Convension pattern: /^\pL_*$/

Matches subdomain, domain and top level in a field that contains a urls. https://www.whatever.you.want ---> whatever.you.want

The best way to parse URL via Regex. This can be used in javascript, PHP, etc.

\b can be replicated as (?<=\w)(?=\W)|(?<=\W)(?=\w) Understanding how to create these class transitions can be beneficial for several reasons. In this instance, counting the results of this regex can be used to measure randomness within strings containing multiple character classes.

This UK postcode regex will match all variants of postcode formats including inner London postcodes (eg SW1A), with optional space (both AL11XP and AL1 1XP are valid) It will reject any postcode that does not specify a valid postcode area. Each part of the postcode is also captured into a capture ...