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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 |
|---|---|
| 544 | $current[$plugin] = time(); |
| 545 | update_site_option( 'active_sitewide_plugins', $current ); |
| 546 | } else { |
| 547 | $current[] = $plugin; |
| 548 | sort($current); |
| 549 | update_option('active_plugins', $current); |
| 550 | } |
| 551 | |
| 552 | if ( ! $silent ) { |
| 553 | do_action( 'activated_plugin', $plugin, $network_wide ); |
| 554 | } |
| 555 | |
| 556 | if ( ob_get_length() > 0 ) { |
| 557 | $output = ob_get_clean(); |
| 558 | return new WP_Error('unexpected_output', __('The plugin generated unexpected output.'), $output); |
| 559 | } |
| 560 | ob_end_clean(); |
| 561 | } |
| 562 | |