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

Gets the primary language for the input locale

参数

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

OO example

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.

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