fix: fetchAll and return types

Author: its-pranjalpandey

src/Result.php

@@ -29,22 +29,27 @@ public function fetchAssociative()
 
     public function fetchOne()
     {
-        return $this->connection->fetchRow($this->result)[0];
+        $result = $this->connection->fetchRow($this->result);
+        return $result ? $result[0] : false;
     }
 
     public function fetchAllNumeric(): array
     {
-        return $this->fetchAll('fetchNumeric');
+        
+        $result = $this->connection->fetchAll($this->result,SW_PGSQL_NUM);
+        return $result ? $result : array();
+
     }
 
     public function fetchAllAssociative(): array
     {
-        return $this->fetchAll('fetchAssociative');
+        $result = $this->connection->fetchAll($this->result,SW_PGSQL_ASSOC);
+        return $result ? $result : array();
     }
 
     public function fetchFirstColumn(): array
     {
-        return array_column($this->fetchAll('fetchNumeric'), 0);
+        return array_column($this->fetchAllNumeric(), 0);
     }
 
     public function rowCount(): int
@@ -62,14 +67,5 @@ public function free(): void
         $this->result = null;
     }
 
-    private function fetchAll(string $method): array
-    {
-        $result_set = [];
-
-        while ($row = [$this, $method]) {
-            $result_set[] = $row;
-        }
-
-        return $result_set;
-    }
+  
 }