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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 |
|---|---|
| 78 | check_admin_referer('plugin-activation-error_' . $plugin); |
| 79 | |
| 80 | $valid = validate_plugin($plugin); |
| 81 | if ( is_wp_error($valid) ) |
| 82 | wp_die($valid); |
| 83 | |
| 84 | error_reporting( E_ALL ^ E_NOTICE ); |
| 85 | @ini_set('display_errors', true); //Ensure that Fatal errors are displayed. |
| 86 | include(WP_PLUGIN_DIR . '/' . $plugin); |
| 87 | do_action('activate_' . $plugin); |
| 88 | exit; |
| 89 | break; |
| 90 | case 'deactivate': |
| 91 | check_admin_referer('deactivate-plugin_' . $plugin); |
| 92 | deactivate_plugins($plugin); |
| 93 | update_option('recently_activated', array($plugin => time()) + (array)get_option('recently_activated')); |
| 94 | wp_redirect("plugins.php?deactivate=true&plugin_status=$status&paged=$page"); |
| 95 | exit; |
| 96 | break; |