MAPG-43 initial classes for DB handling

src/Database/Mysql/Statement.php

@@ -0,0 +1,79 @@
+<?php namespace MapGuesser\Database\Mysql;
+
+use MapGuesser\Interfaces\Database\IResultSet;
+use MapGuesser\Interfaces\Database\IStatement;
+use mysqli_stmt;
+
+class Statement implements IStatement
+{
+    private mysqli_stmt $stmt;
+
+    public function __construct(mysqli_stmt $stmt)
+    {
+        $this->stmt = $stmt;
+    }
+
+    public function __destruct()
+    {
+        $this->stmt->close();
+    }
+
+    public function execute(array $params = []): ?IResultSet
+    {
+        if ($params) {
+            $ref_params = [''];
+
+            foreach ($params as &$param) {
+                $type = gettype($param);
+
+                switch ($type) {
+                    case 'integer':
+                    case 'double':
+                    case 'string':
+                        $t = $type[0];
+                        break;
+
+                    case 'NULL':
+                        $t = 's';
+                        break;
+
+                    case 'boolean':
+                        $param = (string) (int) $param;
+                        $t = 's';
+                        break;
+
+                    case 'array':
+                        $param = json_encode($param);
+                        $t = 's';
+                        break;
+                }
+
+                if (!isset($t)) {
+                    throw new \Exception('Data type ' . $type . ' not supported!');
+                }
+
+                $ref_params[] = &$param;
+                $ref_params[0] .= $t;
+            }
+
+            if (!call_user_func_array([$this->stmt, 'bind_param'], $ref_params)) {
+                throw new \Exception($this->stmt->error);
+            }
+        }
+
+        if (!$this->stmt->execute()) {
+            throw new \Exception($this->stmt->error);
+        }
+
+        if ($result_set = $this->stmt->get_result()) {
+            return new ResultSet($result_set);
+        }
+
+        return null;
+    }
+
+    public function getAffectedRows(): int
+    {
+        return $this->stmt->affected_rows;
+    }
+}