Regular Expressions 101

Matches all img tags that have a URL for the src attribute. Useful for updating all those links in your email templates, or where ever your using the \ tag

RFC 5424 (https://tools.ietf.org/html/rfc5424) parser

https://docs.racket-lang.org/guide/Looking_Ahead_and_Behind.html

https://cdaw.gsfc.nasa.gov/CME_list/radio/waves_type2.html

This is a minimal RCF-5322 section 3.4 compliant address pattern.

This regex is helpful to remove all tags

Easy remove any , tag and inline styles for clean code

this will find any type of youtube embed or link to a video so you can replace with your own IFRAME $youtube_replacement = '';

checks for a continuous string of characters (in this case 7) , but ignores HTML tags we use it in a required feild validator that has auto generated formatting elements

Useful for parsing HTML templates written in mustache language. This regex does not support custom delimiter tags. For documentation see: http://mustache.github.io/mustache.5.html

Final version used in script.

Example: preg_match_all('//', '', $arr, PREG_PATTERN_ORDER); Returns:...

This matches content between two characters ie. height: 400px; matches between : and ;