(PHP 4 >= 4.0.6, PHP 5, PHP 7) Parse GET/POST/COOKIE data and set global variable

(PHP 5, PHP 7) Composes a MIME header field

(PHP 7) Check if code point is a digit character

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Returns a key-value array of locale ID subtag elements.

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Set whether date/time interpretation is to be lenient

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get the smallest local maximum for a field

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Convert to

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Multibyte regular expression match for predefined multibyte string

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Detect HTTP input character encoding

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Format a currency value