(PHP 4, PHP 5, PHP 7) Un-quotes a quoted string

(PHP 4 >= 4.0.1, PHP 5, PHP 7) Calculates the crc32 polynomial of a string

(PHP 4, PHP 5, PHP 7) Strip whitespace (or other characters) from the beginning and end of a string

(PHP 5, PHP 7) Binary safe comparison of two strings from an offset, up to length characters

(PECL ssdeep >= 1.0.0) Create a fuzzy hash from a file

(PHP 4, PHP 5, PHP 7) Return a specific character

(PHP 5, PHP 7) Decode a uuencoded string string

(PHP 4 >= 4.0.5, PHP 5, PHP 7) Locale based string comparison

(PHP 4 >= 4.0.1, PHP 5) Split string into array by regular expression case insensitive

(PHP 4, PHP 5, PHP 7) Strip whitespace (or other characters) from the end of a string