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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 |
|---|---|
| 1883 | 'comment_parent' => 0, |
| 1884 | 'user_ID' => 0, |
| 1885 | 'comment_author' => null, |
| 1886 | 'comment_author_email' => null, |
| 1887 | 'comment_author_url' => null, |
| 1888 | ) |
| 1889 | ); |
| 1890 | |
| 1891 | /** This filter is documented in wp-includes/comment.php */ |
| 1892 | $allow_empty = apply_filters( 'allow_empty_comment', false, $check ); |
| 1893 | |
| 1894 | if ( $allow_empty ) { |
| 1895 | return true; |
| 1896 | } |
| 1897 | |
| 1898 | /* |
| 1899 | * Do not allow a comment to be created with missing or empty |
| 1900 | * comment_content. See wp_handle_comment_submission(). |
| 1901 | */ |