wp-admin/includes/class-wp-ms-sites-list-table.php:439Handles the checkbox column output.
$itemarray public function column_cb( $item ) { // Restores the more descriptive, specific name for use within this method. $blog = $item; if ( ! is_main_site( $blog['blog_id'] ) ) : $blogname = untrailingslashit( $blog['domain'] . $blog['path'] ); ?> <input type="checkbox" id="blog_<?php echo $blog['blog_id']; ?>" name="allblogs[]" value="<?php echo esc_attr( $blog['blog_id'] ); ?>" /> <label for="blog_<?php echo $blog['blog_id']; ?>"> <span class="screen-reader-text"> <?php /* translators: %s: Site URL. */ printf( __( 'Select %s' ), $blogname ); ?> </span> </label> <?php endif; }Introduced in 4.3.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/class-wp-ms-sites-list-table.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.