(PHP 4, PHP 5, PHP 7) Return array entries that match the pattern

(PHP 4, PHP 5, PHP 7) Set locale information

(PECL bbcode >= 0.10.2) Attach another parser in order to use another rule set for argument parsing

(PHP 4, PHP 5, PHP 7) Case-insensitive

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Wraps a string to a given number of characters

(PHP 4, PHP 5, PHP 7) Count the number of substring occurrences

(PHP 4, PHP 5, PHP 7) Reverse a string string

(PHP 4, PHP 5, PHP 7) Perform a regular expression search and replace

(PECL ssdeep >= 1.0.0) Calculates the match score between two fuzzy hash signatures