get_locale()

检索当前区域设置。
Retrieves the current locale.

目录锚点：#说明#返回#源码#笔记

说明（Description）

如果设置了区域设置，则它将在“locale”筛选器挂钩中筛选区域设置并返回值。

如果尚未设置区域设置，则如果已定义WPLANG常量，则使用该常量。然后通过“locale”过滤器钩子过滤它，并返回locale全局集和locale的值。

获取区域设置的过程只应完成一次，但区域设置将始终使用“locale”挂钩进行筛选。

返回（Return）

（string）博客或“locale”挂钩中的区域设置。

源码（Source）

/**
 * Get the current locale.
 *
 * If the locale is set, then it will filter the locale in the 'locale' filter
 * hook and return the value.
 *
 * If the locale is not set already, then the WPLANG constant is used if it is
 * defined. Then it is filtered through the 'locale' filter hook and the value
 * for the locale global set and the locale is returned.
 *
 * The process to get the locale should only be done once, but the locale will
 * always be filtered using the 'locale' hook.
 *
 * @since 1.5.0
 *
 * @global string $locale
 * @global string $wp_local_package
 *
 * @return string The locale of the blog or from the 'locale' hook.
 */
function get_locale() {
	global $locale, $wp_local_package;

	if ( isset( $locale ) ) {
		/**
		 * Filter WordPress install's locale ID.
		 *
		 * @since 1.5.0
		 *
		 * @param string $locale The locale ID.
		 */
		return apply_filters( 'locale', $locale );
	}

	if ( isset( $wp_local_package ) ) {
		$locale = $wp_local_package;
	}

	// WPLANG was defined in wp-config.
	if ( defined( 'WPLANG' ) ) {
		$locale = WPLANG;
	}

	// If multisite, check options.
	if ( is_multisite() ) {
		// Don't check blog option when installing.
		if ( defined( 'WP_INSTALLING' ) || ( false === $ms_locale = get_option( 'WPLANG' ) ) ) {
			$ms_locale = get_site_option( 'WPLANG' );
		}

		if ( $ms_locale !== false ) {
			$locale = $ms_locale;
		}
	} else {
		$db_locale = get_option( 'WPLANG' );
		if ( $db_locale !== false ) {
			$locale = $db_locale;
		}
	}

	if ( empty( $locale ) ) {
		$locale = 'en_US';
	}

	/** This filter is documented in wp-includes/l10n.php */
	return apply_filters( 'locale', $locale );
}

笔记（Notes）

这将设置货币区域设置，如果为空，则设置为en_US