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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 |
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108 | $tables = $wpdb->tables( 'blog' ); |
109 | /** |
110 | * Filter the tables to drop when the blog is deleted. |
111 | * |
112 | * @since MU |
113 | * |
114 | * @param array $tables The blog tables to be dropped. |
115 | * @param int $blog_id The ID of the blog to drop tables for. |
116 | */ |
117 | $drop_tables = apply_filters( 'wpmu_drop_tables', $tables, $blog_id ); |
118 |
|
119 | foreach ( (array) $drop_tables as $table ) { |
120 | $wpdb->query( "DROP TABLE IF EXISTS `$table`" ); |
121 | } |
122 |
|
123 | $wpdb->delete( $wpdb->blogs, array( 'blog_id' => $blog_id ) ); |
124 |
|
125 | /** |
126 | * Filter the upload base directory to delete when the blog is deleted. |