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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 |
|---|---|
| 21 | if ( $category->parent == $parent) { |
| 22 | echo "\t" . _cat_row( $category, $level ); |
| 23 | if ( isset($children[$category->term_id]) ) |
| 24 | cat_rows( $category->term_id, $level +1, $categories ); |
| 25 | } |
| 26 | } |
| 27 | $output = ob_get_contents(); |
| 28 | ob_end_clean(); |
| 29 | |
| 30 | $output = apply_filters('cat_rows', $output); |
| 31 | |
| 32 | echo $output; |
| 33 | } else { |
| 34 | return false; |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | function _cat_row( $category, $level, $name_override = false ) { |
| 39 | global $class; |