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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 |
|---|---|
| 2050 | /** |
| 2051 | * Filter the arguments used in retrieving the comment list. |
| 2052 | * |
| 2053 | * @since 4.0.0 |
| 2054 | * |
| 2055 | * @see wp_list_comments() |
| 2056 | * |
| 2057 | * @param array $r An array of arguments for displaying comments. |
| 2058 | */ |
| 2059 | $r = apply_filters( 'wp_list_comments_args', $r ); |
| 2060 | |
| 2061 | // Figure out what comments we'll be looping through ($_comments) |
| 2062 | if ( null !== $comments ) { |
| 2063 | $comments = (array) $comments; |
| 2064 | if ( empty($comments) ) |
| 2065 | return; |
| 2066 | if ( 'all' != $r['type'] ) { |
| 2067 | $comments_by_type = separate_comments($comments); |
| 2068 | if ( empty($comments_by_type[$r['type']]) ) |