(PHP 4, PHP 5, PHP 7) Split a string into smaller chunks

(PHP 4, PHP 5, PHP 7) Inserts HTML line breaks before all newlines in a string

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Convert all HTML entities to their applicable characters

(PHP 4, PHP 5, PHP 7) Calculate the metaphone key of a string

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Binary safe case-insensitive string comparison of the first n characters

(PHP 4, PHP 5, PHP 7) Get string length int strlen

(PHP 4, PHP 5, PHP 7) One-way string hashing

(PHP 4, PHP 5, PHP 7) Split a string by string

(PHP 4, PHP 5, PHP 7) Un-quote string quoted with

(PHP 4, PHP 5, PHP 7) Convert special characters to HTML entities