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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
2556 | $data = wp_unslash( $commentarr ); |
2557 |
|
2558 | /** |
2559 | * Filters the comment content before it is updated in the database. |
2560 | * |
2561 | * @since 1.5.0 |
2562 | * |
2563 | * @param string $comment_content The comment data. |
2564 | */ |
2565 | $data['comment_content'] = apply_filters( 'comment_save_pre', $data['comment_content'] ); |
2566 |
|
2567 | $data['comment_date_gmt'] = get_gmt_from_date( $data['comment_date'] ); |
2568 |
|
2569 | if ( ! isset( $data['comment_approved'] ) ) { |
2570 | $data['comment_approved'] = 1; |
2571 | } elseif ( 'hold' === $data['comment_approved'] ) { |
2572 | $data['comment_approved'] = 0; |
2573 | } elseif ( 'approve' === $data['comment_approved'] ) { |
2574 | $data['comment_approved'] = 1; |