validate email address according to RFC 5322 specification. I tried to optimize regex radically restructuring the original BNF-like specification with full support preserved.

thanks

I come across Dutch postcodes quite different from normal 5 or 6 digit postcodes. So, this regex covers most possible postcodes. Test cases: 1234 AB // Dutch postal code 12345 // Generic 5-digit postal code 380059 // Indian 6-digit postal code...

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This function extracts the Google Tag Manager (GTM) key from a given input string. The GTM key typically follows the format "GTM-XXXXXX", where "XXXXXX" represents a unique identifier.

Im IT Zollverfahren Atlas werden die bisherigen Zollregistriernummern ATx Nummern durch MRN ersetzt. Der Aufbau der MRN erfolgt nach folgendem Schema: Stelle / Inhalt / zulässige Werte 1-2 / Jahr / 2 Integer (24 bis 99) 3-4 / Land / 2 Char (DE)...

regex match on lastname and domain

match some emails and extract their local part and domain

hehe

uncode word boundaries

haha funny regex min 3 char

This regular expression matches patronymic separators commonly used in Malaysian names such as: Bin Binti A/L or A\L A/P or A\P ...

Gets the ID of a YouTube Video from any link to it.

This regex finds images html tags without alternative text

Only accepts a new `tic if there are two tac` before it.

This is the best regex I found that was able to correctly parse cells containing multiple lines (hard line breaks). Low number of steps with sufficient speed, and it doesn't require /x option either. Source: https://gist.github.com/awwsmm/886ac0ce0cef517ad7092915f708175f

This was build on gentoo with english_ca.utf8 IIRC. Might not work for other distros... or locales supports -as the delimiter of hostname suffixing/prefixing

Capture PHP Function/Class Methods Use regular expression to capture the whole method/function. Parse static PHP code for functions and class methods. Useful for getting tokens and possibly use to generate a Call-Graph for debugging.

Krist name or address regex, where names also support metanames. Source 1 Source 2

In PHP scripts replace array() with short syntax []