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

Basic email address validation example

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 ...

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 []