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Summery Summery
Determine if a comment exists based on author and date.
Syntax Syntax
Description Description
For best performance, use $timezone = 'gmt', which queries a field that is properly indexed. The default value for $timezone is ‘blog’ for legacy reasons.
Parameters Parameters
- $comment_author
-
(Required) Author of the comment.
- $comment_date
-
(Required) Date of the comment.
- $timezone
-
(Optional) Timezone. Accepts 'blog' or 'gmt'. Default 'blog'.
Default value: 'blog'
Return Return
(string|null) Comment post ID on success.
Source Source
File: wp-admin/includes/comment.php
function comment_exists( $comment_author, $comment_date, $timezone = 'blog' ) {
global $wpdb;
$date_field = 'comment_date';
if ( 'gmt' === $timezone ) {
$date_field = 'comment_date_gmt';
}
return $wpdb->get_var(
$wpdb->prepare(
"SELECT comment_post_ID FROM $wpdb->comments
WHERE comment_author = %s AND $date_field = %s",
stripslashes( $comment_author ),
stripslashes( $comment_date )
)
);
}
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Changelog Changelog
| Version | Description |
|---|---|
| 4.4.0 | Added the $timezone parameter. |
| 2.0.0 | Introduced. |