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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 |
|---|---|
| 121 | |
| 122 | case 'location': |
| 123 | ?> |
| 124 | <td><a href="<?php the_permalink(); ?>"><?php _e('Permalink'); ?></a></td> |
| 125 | <?php |
| 126 | break; |
| 127 | |
| 128 | default: |
| 129 | ?> |
| 130 | <td><?php do_action('manage_media_custom_column', $column_name, $id); ?></td> |
| 131 | <?php |
| 132 | break; |
| 133 | } |
| 134 | } |
| 135 | ?> |
| 136 | </tr> |
| 137 | <?php |
| 138 | endwhile; |
| 139 | } else { |