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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.
| Line | Code |
|---|---|
| 122 | /** |
| 123 | * Filters the locale for the current request prior to the default determination process. |
| 124 | * |
| 125 | * Using this filter allows to override the default logic, effectively short-circuiting the function. |
| 126 | * |
| 127 | * @since 5.0.0 |
| 128 | * |
| 129 | * @param string|null $locale The locale to return and short-circuit. Default null. |
| 130 | */ |
| 131 | $determined_locale = apply_filters( 'pre_determine_locale', null ); |
| 132 | |
| 133 | if ( ! empty( $determined_locale ) && is_string( $determined_locale ) ) { |
| 134 | return $determined_locale; |
| 135 | } |
| 136 | |
| 137 | $determined_locale = get_locale(); |
| 138 | |
| 139 | if ( is_admin() ) { |
| 140 | $determined_locale = get_user_locale(); |