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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 |
---|---|
1890 | 'comment_author' => null, |
1891 | 'comment_author_email' => null, |
1892 | 'comment_author_url' => null, |
1893 | 'comment_parent' => 0, |
1894 | 'user_id' => 0, |
1895 | ) |
1896 | ); |
1897 |
|
1898 | /** This filter is documented in wp-includes/comment.php */ |
1899 | $allow_empty = apply_filters( 'allow_empty_comment', false, $check ); |
1900 |
|
1901 | if ( $allow_empty ) { |
1902 | return true; |
1903 | } |
1904 |
|
1905 | /* |
1906 | * Do not allow a comment to be created with missing or empty |
1907 | * comment_content. See wp_handle_comment_submission(). |
1908 | */ |