Fixed parent class of stub (#14990)

Author: SakiTakamachi

ext/pdo_dblib/pdo_dblib.stub.php

@@ -8,7 +8,7 @@
  * @strict-properties
  * @not-serializable
  */
-class Dblib extends PDO
+class Dblib extends \PDO
 {
     /** @cvalue PDO_DBLIB_ATTR_CONNECTION_TIMEOUT */
     public const int ATTR_CONNECTION_TIMEOUT = UNKNOWN;

ext/pdo_dblib/pdo_dblib_arginfo.h

@@ -8,7 +8,7 @@
  * @strict-properties
  * @not-serializable
  */
-class Firebird extends PDO
+class Firebird extends \PDO
 {
     /** @cvalue PDO_FB_ATTR_DATE_FORMAT */
     public const int ATTR_DATE_FORMAT = UNKNOWN;

ext/pdo_firebird/pdo_firebird.stub.php

@@ -8,7 +8,7 @@
  * @strict-properties
  * @not-serializable
  */
-class Mysql extends PDO
+class Mysql extends \PDO
 {
     /** @cvalue PDO_MYSQL_ATTR_USE_BUFFERED_QUERY */
     public const int ATTR_USE_BUFFERED_QUERY = UNKNOWN;

ext/pdo_firebird/pdo_firebird_arginfo.h

@@ -15,7 +15,7 @@
      * @strict-properties
      * @not-serializable
      */
-    class Odbc extends PDO
+    class Odbc extends \PDO
     {
         /** @cvalue PDO_ODBC_ATTR_USE_CURSOR_LIBRARY */
         public const int ATTR_USE_CURSOR_LIBRARY = UNKNOWN;

ext/pdo_mysql/pdo_mysql.stub.php

@@ -8,7 +8,7 @@
  * @strict-properties
  * @not-serializable
  */
-class Pgsql extends PDO
+class Pgsql extends \PDO
 {
     /** @cvalue PDO_PGSQL_ATTR_DISABLE_PREPARES */
     public const int ATTR_DISABLE_PREPARES = UNKNOWN;

ext/pdo_mysql/pdo_mysql_arginfo.h

@@ -8,7 +8,7 @@
  * @strict-properties
  * @not-serializable
  */
-class Sqlite extends PDO
+class Sqlite extends \PDO
 {
 #ifdef SQLITE_DETERMINISTIC
     /** @cvalue SQLITE_DETERMINISTIC */