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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 |
|---|---|
| 267 | |
| 268 | if ( !in_array($plugin, $current) ) { |
| 269 | if ( !empty($redirect) ) |
| 270 | 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 |
| 271 | ob_start(); |
| 272 | @include(WP_PLUGIN_DIR . '/' . $plugin); |
| 273 | $current[] = $plugin; |
| 274 | sort($current); |
| 275 | update_option('active_plugins', $current); |
| 276 | do_action('activate_' . $plugin); |
| 277 | ob_end_clean(); |
| 278 | } |
| 279 | |
| 280 | return null; |
| 281 | } |
| 282 | |
| 283 | /** |
| 284 | * Deactivate a single plugin or multiple plugins. |
| 285 | * |