(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Searches the language tag list for the best match to the language

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Gets the primary language for the input locale

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Checks if a language tag filter matches with locale

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Canonicalize the locale string

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Returns an appropriately localized display name for script

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Returns an appropriately localized display name for language

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Returns a correctly ordered and delimited locale ID

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Tries to find out best available locale based on HTTP "Accept-Language"

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Returns an appropriately localized display name for the input

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Returns an appropriately localized display name for region