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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 32 | |
| 33 | if ( isset( $locale ) ) { |
| 34 | /** |
| 35 | * Filters the locale ID of the WordPress installation. |
| 36 | * |
| 37 | * @since 1.5.0 |
| 38 | * |
| 39 | * @param string $locale The locale ID. |
| 40 | */ |
| 41 | return apply_filters( 'locale', $locale ); |
| 42 | } |
| 43 | |
| 44 | if ( isset( $wp_local_package ) ) { |
| 45 | $locale = $wp_local_package; |
| 46 | } |
| 47 | |
| 48 | // WPLANG was defined in wp-config. |
| 49 | if ( defined( 'WPLANG' ) ) { |
| 50 | $locale = WPLANG; |
| Line | Code |
| 71 | $locale = $db_locale; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | if ( empty( $locale ) ) { |
| 76 | $locale = 'en_US'; |
| 77 | } |
| 78 | |
| 79 | /** This filter is documented in wp-includes/l10n.php */ |
| 80 | return apply_filters( 'locale', $locale ); |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * Retrieves the locale of a user. |
| 85 | * |
| 86 | * If the user has a locale set to a non-empty string then it will be |
| 87 | * returned. Otherwise it returns the locale of get_locale(). |
| 88 | * |
| 89 | * @since 4.7.0 |