Locale::getPrimaryLanguage()

locale_get_primary_language

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0)

Gets the primary language for the input locale

说明

面向对象风格
publicstaticLocale::getPrimaryLanguage(string $locale): string

过程化风格
locale_get_primary_language(string $locale): string

Gets the primary language for the input locale

参数

$locale

The locale to extract the primary language code from

返回值

The language code associated with the language or NULL in case of error.

范例

locale_get_primary_language() example

<?php
echo locale_get_primary_language('zh-Hant');
?>

OO example

<?php
echo Locale::getPrimaryLanguage('zh-Hant');
?>

以上例程会输出：

zh

参见

• locale_get_script() Gets the script for the input locale
• locale_get_region() Gets the region for the input locale
• locale_get_all_variants() Gets the variants for the input locale

The behaviour when a falsy value is passed as the $locale is undocumented, but it appears that it returns the primary language of the default system language. In my case:
  Locale::getPrimaryLanguage(null);
Returns 'en'. So make sure to test $locale before passing it to the method.