PDO: Handle PHP warnings for internal queries

CHANGELOG.md

@@ -3,6 +3,7 @@
 - Display collation at table structure if different from table
 - Ctrl+click in select moves the cursor in modern browsers
 - URL parameter ?ext=pdo to force using PDO
+- PDO: Handle PHP warnings for internal queries
 - PostgreSQL: Display auto_increment of inserted rows
 - PostgreSQL: Display description of system variables
 - PostgreSQL: Avoid warning about crdb_version (bug #924, regression from 5.0.5)

adminer/include/pdo.inc.php

@@ -72,7 +72,7 @@ if (extension_loaded('pdo')) {
 				return false;
 			}
 			$row = $result->fetch();
-			return $row[$field];
+			return $row ? $row[$field] : false;
 		}
 	}