All regular expressions (RegEx) of a PCRE (PHP) flavor, taken from the “quick reference” of regex101.com (online regex tester and debugger).

The deck is well divided into appropriate tags:

• Anchors
• Character Classes
• Flags/Modifiers
• General Tokens
• Group Constructs
• Meta Sequences
• Quantifiers
• Substitution

Each note is appropriately formatted to ease the readability. Additionally, every note is supported by an example. Finally, the most common tokens are marked by a “regex::common_token” tag.