update_site_meta( int $site_id, string $meta_key, mixed $meta_value, mixed $prev_value = '' )

Updates metadata for a site.


Description

Use the $prev_value parameter to differentiate between meta fields with the same key and site ID.

If the meta field for the site does not exist, it will be added.


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Parameters

$site_id

(int) (Required) Site ID.

$meta_key

(string) (Required) Metadata key.

$meta_value

(mixed) (Required) Metadata value. Must be serializable if non-scalar.

$prev_value

(mixed) (Optional) Previous value to check before updating. If specified, only update existing metadata entries with this value. Otherwise, update all entries.

Default value: ''


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Return

(int|bool) Meta ID if the key didn't exist, true on successful update, false on failure or if the value passed to the function is the same as the one that is already in the database.


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Source

File: wp-includes/ms-site.php

function update_site_meta( $site_id, $meta_key, $meta_value, $prev_value = '' ) {
	return update_metadata( 'blog', $site_id, $meta_key, $meta_value, $prev_value );
}


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Changelog

Changelog
Version Description
5.1.0 Introduced.

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