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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 |
|---|---|
| 12 | include(ABSPATH . 'wp-content/plugins/' . trim( $_GET['plugin'] )); |
| 13 | do_action('activate_' . trim( $_GET['plugin'] )); |
| 14 | } |
| 15 | wp_redirect('plugins.php?activate=true'); |
| 16 | } else if ('deactivate' == $_GET['action']) { |
| 17 | check_admin_referer('deactivate-plugin_' . $_GET['plugin']); |
| 18 | $current = get_settings('active_plugins'); |
| 19 | array_splice($current, array_search( $_GET['plugin'], $current), 1 ); // Array-fu! |
| 20 | update_option('active_plugins', $current); |
| 21 | do_action('deactivate_' . trim( $_GET['plugin'] )); |
| 22 | wp_redirect('plugins.php?deactivate=true'); |
| 23 | } |
| 24 | exit; |
| 25 | } |
| 26 | |
| 27 | $title = __('Manage Plugins'); |
| 28 | require_once('admin-header.php'); |
| 29 | |
| 30 | // Clean up options |