(PHP 4 >= 4.0.2, PHP 5, PHP 7) Wraps a string to a given number of characters
(PHP 4, PHP 5, PHP 7) Convert from one Cyrillic character set to another
(PHP 5, PHP 7) Write a formatted string to a stream
(PHP 4, PHP 5, PHP 7) Set locale information
(PHP 4, PHP 5, PHP 7) Case insensitive string comparisons using a "natural order" algorithm
(PHP 4, PHP 5, PHP 7) Calculate the similarity between two strings
(PHP 5, PHP 7) Uuencode a string string convert_uuencode
(PHP 4, PHP 5, PHP 7) Case-insensitive
(PHP 4 >= 4.0.1, PHP 5, PHP 7) Parses input from a string according to a format
(PHP 4, PHP 5, PHP 7) Join array elements with a string
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