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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 |
|---|---|
| 485 | do_action( 'activate_plugin', trim( $plugin) ); |
| 486 | if ( $network_wide ) { |
| 487 | $current[$plugin] = time(); |
| 488 | update_site_option( 'active_sitewide_plugins', $current ); |
| 489 | } else { |
| 490 | $current[] = $plugin; |
| 491 | sort($current); |
| 492 | update_option('active_plugins', $current); |
| 493 | } |
| 494 | do_action( 'activate_' . trim( $plugin ) ); |
| 495 | do_action( 'activated_plugin', trim( $plugin) ); |
| 496 | if ( ob_get_length() > 0 ) { |
| 497 | $output = ob_get_clean(); |
| 498 | return new WP_Error('unexpected_output', __('The plugin generated unexpected output.'), $output); |
| 499 | } |
| 500 | ob_end_clean(); |
| 501 | } |
| 502 | |
| 503 | return null; |