delete_comment_meta( int $comment_id, string $meta_key, mixed $meta_value = '' ): bool

Removes metadata matching criteria from a comment.

Description

You can match based on the key, or key and value. Removing based on key and value, will keep from removing duplicate metadata with the same key. It also allows removing all metadata matching key, if needed.

Parameters

$comment_idintrequired: Comment ID.
$meta_keystringrequired: Metadata name.
$meta_valuemixedoptional: Metadata value. If provided, rows will only be removed that match the value.
Must be serializable if non-scalar.
Default:''

Return

bool True on success, false on failure.

Source

wp-includes/comment.php

Copy

function delete_comment_meta( $comment_id, $meta_key, $meta_value = '' ) {
	return delete_metadata( 'comment', $comment_id, $meta_key, $meta_value );
}

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Uses	Description
delete_metadata()`wp-includes/meta.php`	Deletes metadata for the specified object.

Used by	Description
wp_scheduled_delete()`wp-includes/functions.php`	Permanently deletes comments or posts of any type that have held a status of ‘trash’ for the number of days defined in EMPTY_TRASH_DAYS.
wp_spam_comment()`wp-includes/comment.php`	Marks a comment as Spam.
wp_unspam_comment()`wp-includes/comment.php`	Removes a comment from the Spam.
wp_trash_comment()`wp-includes/comment.php`	Moves a comment to the Trash
wp_untrash_comment()`wp-includes/comment.php`	Removes a comment from the Trash

Changelog

Version	Description
2.9.0	Introduced.

User Contributed Notes

Skip to note 2 content

Codex 9 years ago

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Delete all metadata with the key ‘my_meta_key’ for comment ID 5.
wp-includes/comment.php
Copy
```
delete_comment_meta( 5, 'my_meta_key' );
```
Delete metadata for ‘my_meta_key’ only where the meta_value is ‘foo’.
wp-includes/comment.php
Copy
```
delete_comment_meta( 5, 'my_meta_key', 'foo' );
```
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