PHP 7.4->8.4 Breakage

Code from constants.php:

/**
 * TableDef class
 */
class TableDef {
	public $name;
	public $display_name;
	public $notify_insert;
	public $fields = array();
	public $indexes = array();
	public $primary_keys = array();
	public $auto_increment = "";
	public $connection = 1;

	/**
	 * Constructor
	 *
	 * @param string $name Name
	 * @param string $display_name Display name
	 * @param bool $notify_insert Notify on an Insert?
	 */
	public function TableDef($name, $display_name, $notify_insert) {
		$this->name = $name;
		$this->display_name = $display_name;
		$this->notify_insert = $notify_insert;
	}

=====

Code from tabledef.php:

function load_table_definitions()
{
   global $tabledefs;

   $tabledefs = array();


   // table_a table

   $tabledef = new TableDef("table_a", "Table A", false);

   // (CODE REMOVED ACTUALLY DEFINING TABLE FIELDS)

   $tabledefs[$tabledef->name] = $tabledef;

=====

Code from import.php:

/**
 * Import one table
 *
 * @param string $subdir Subdirectory data is in.
 * @param string $tablename Table name
 * @param string $qualifier Optional record qualifier, return true to include the record.
 * @param string $seqno File sequence number.
 * @param int $update_cnt Update count
 * @param int $insert_cnt Insert count
 * @param bool $display_progress Display progress messages.
 * @param string $lookup_sql Only process record if sql finds a related record. Must SELECT COUNT(*) as the only value.
 * @param int $lookup_field Field offset to do a ? substitution for in $lookup_sql.
 * @param int $conn SQL connection
 */
function import_table($subdir, $tablename, $qualifier, $seqno, &$update_cnt, &$insert_cnt, $display_progress, $lookup_sql,
	$lookup_field, $conn)
{
   global $tabledefs;

   $tabledef = $tabledefs[$tablename];

=====

Code snippets from importtables.php:

   load_table_definitions();

      echo "\nStarting table_a\n";
      import_table("tabledata/", "table_a", '', "", $update_cnt, $insert_cnt, true, "", 0, $conn);
      echo "table_a imported Adds = {$insert_cnt} Updates = {$update_cnt}\n";