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update_comment_meta( int $comment_id, string $meta_key, mixed $meta_value, mixed $prev_value = ” ): int|bool

Updates comment meta field based on comment ID.

Description

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

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

Parameters

$comment_idintrequired: Comment ID.
$meta_keystringrequired: Metadata key.
$meta_valuemixedrequired: Metadata value. Must be serializable if non-scalar.
$prev_valuemixedoptional: Previous value to check before updating.
If specified, only update existing metadata entries with this value. Otherwise, update all entries.

Default:''

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.

Source

function update_comment_meta( $comment_id, $meta_key, $meta_value, $prev_value = '' ) {
	return update_metadata( 'comment', $comment_id, $meta_key, $meta_value, $prev_value );
}

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Changelog

Version	Description
2.9.0	Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/update_comment_meta