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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 |
|---|---|
| 836 | |
| 837 | /** |
| 838 | * Filters the tables to drop when the site is deleted. |
| 839 | * |
| 840 | * @since MU (3.0.0) |
| 841 | * |
| 842 | * @param string[] $tables Array of names of the site tables to be dropped. |
| 843 | * @param int $site_id The ID of the site to drop tables for. |
| 844 | */ |
| 845 | $drop_tables = apply_filters( 'wpmu_drop_tables', $tables, $site->id ); |
| 846 | |
| 847 | foreach ( (array) $drop_tables as $table ) { |
| 848 | $wpdb->query( "DROP TABLE IF EXISTS `$table`" ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared |
| 849 | } |
| 850 | |
| 851 | /** |
| 852 | * Filters the upload base directory to delete when the site is deleted. |
| 853 | * |
| 854 | * @since MU (3.0.0) |