Address dynamic class property deprecation warnings

models/Asset.php

@@ -13,6 +13,7 @@ class Asset
 	protected $subdir;
 	protected $filename;
 	protected $title;
+	protected $slug;
 	protected $mimetype;
 	protected $image_width;
 	protected $image_height;
@@ -364,7 +365,7 @@ class Asset
 
 	public function isImage()
 	{
-		return substr($this->mimetype, 0, 5) === 'image';
+		return isset($this->mimetype) && substr($this->mimetype, 0, 5) === 'image';
 	}
 
 	public function getImage()

models/AssetIterator.php

@@ -12,6 +12,7 @@ class AssetIterator extends Asset
 	private $res_assets;
 	private $res_meta;
 	private $res_thumbs;
+	private Database $db;
 
 	protected function __construct($res_assets, $res_meta, $res_thumbs, $return_format)
 	{

models/Database.php

@@ -17,6 +17,7 @@ class Database
 	private $connection;
 	private $query_count = 0;
 	private $logged_queries = [];
+	private array $db_callback;
 
 	/**
 	 * Initialises a new database connection.

models/GenericTable.php

@@ -20,6 +20,13 @@ class GenericTable
 	public $form_above;
 	public $form_below;
 
+	private $sort_direction;
+	private $sort_order;
+	private $base_url;
+	private $start;
+	private $items_per_page;
+	private $recordCount;
+
 	public function __construct($options)
 	{
 		// Make sure we're actually sorting on something sortable.

models/Guest.php

@@ -21,7 +21,7 @@ class Guest extends User
 		$this->is_guest = true;
 		$this->is_admin = false;
 		$this->first_name = 'Guest';
-		$this->last_name = '';
+		$this->surname = '';
 	}
 
 	public function updateAccessTime()

models/PhotoMosaic.php

@@ -11,6 +11,7 @@ class PhotoMosaic
 	private $queue = [];
 
 	const NUM_DAYS_CUTOFF = 7;
+	private AssetIterator $iterator;
 
 	public function __construct(AssetIterator $iterator)
 	{

models/Thumbnail.php

@@ -16,6 +16,7 @@ class Thumbnail
 	private $width;
 	private $height;
 	private $crop_mode;
+	private string $filename_suffix;
 
 	const CROP_MODE_NONE         = 0;
 	const CROP_MODE_BOUNDARY     = 1;

models/User.php

@@ -12,17 +12,20 @@
  */
 abstract class User
 {
-	protected $id_user;
-	protected $first_name;
-	protected $surname;
-	protected $emailaddress;
+	protected int $id_user;
+	protected string $first_name;
+	protected string $surname;
+	protected string $slug;
+	protected string $emailaddress;
+	protected string $password_hash;
 	protected $creation_time;
 	protected $last_action_time;
 	protected $ip_address;
 	protected $is_admin;
+	protected string $reset_key;
 
-	protected $is_logged;
-	protected $is_guest;
+	protected bool $is_logged;
+	protected bool $is_guest;
 
 	/**
 	 * Returns user id.