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apply_filters( ‘subdirectory_reserved_names’, string[] $subdirectory_reserved_names )

Filters reserved site names on a sub-directory Multisite installation.

Parameters

$subdirectory_reserved_namesstring[]
Array of reserved names.

Source

return apply_filters( 'subdirectory_reserved_names', $names );

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Changelog

Version Description
4.4.0 'wp-admin', 'wp-content', 'wp-includes', 'wp-json', and 'embed' were added to the reserved names list.
3.0.0 Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/hooks/subdirectory_reserved_names