Casimir et Hippolyte questions

Casimir et Hippolyte answers

• How to write regex in Python with (?(DEFINE))?
• Parse HTML with CURL in Shell Script
• How to avoid (linear) back tracking in a non-greedy regular expression?
• split string into array of n words per index
• How to preg_replace_all in the large amount of data
• Shorthand expression for an if ( $a == $b || $a == $c ) statement
• Can my Regex be improved?
• strpos not working for a certain string
• Can't match string using regular expression with "?"
• How do I make match stop on first occurance?