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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 |
|---|---|
| 71 | } |
| 72 | setTimeout( "nextpage()", 250 ); |
| 73 | //--> |
| 74 | </script><?php |
| 75 | break; |
| 76 | case 'show': |
| 77 | default: |
| 78 | ?><p><?php _e( 'You can update all the sites on your network through this page. It works by calling the update script of each site automatically. Hit the link below to update.' ); ?></p> |
| 79 | <p><a class="button" href="upgrade.php?action=upgrade"><?php _e("Update Network"); ?></a></p><?php |
| 80 | do_action( 'wpmu_upgrade_page' ); |
| 81 | break; |
| 82 | } |
| 83 | ?> |
| 84 | </div> |
| 85 | |
| 86 | <?php include('../admin-footer.php'); ?> |
| 87 | |