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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 |
|---|---|
| 298 | if ( !empty($redirect) ) |
| 299 | wp_redirect(add_query_arg('_error_nonce', wp_create_nonce('plugin-activation-error_' . $plugin), $redirect)); // we'll override this later if the plugin can be included without fatal error |
| 300 | ob_start(); |
| 301 | @include(WP_PLUGIN_DIR . '/' . $plugin); |
| 302 | $current[] = $plugin; |
| 303 | sort($current); |
| 304 | do_action( 'activate_plugin', trim( $plugin) ); |
| 305 | update_option('active_plugins', $current); |
| 306 | do_action( 'activate_' . trim( $plugin ) ); |
| 307 | do_action( 'activated_plugin', trim( $plugin) ); |
| 308 | ob_end_clean(); |
| 309 | } |
| 310 | |
| 311 | return null; |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * Deactivate a single plugin or multiple plugins. |
| 316 | * |