Description:
------------
Attempt to retrieve resultsets from stored procedures containing cursors fails with "Packets out of order" message. Retrieving data from SPs without cursors works fine.

See "Test script" section for a minimal test that reproduces the problem.

Test script:
---------------
PHP:
<?php
  $DB = new mysqli('SomeHost', 'SomeLogin', 'SomePassword', 'SomeDB');
  $Stmt = $DB->prepare('CALL `Proc1`()');
  $Stmt->execute();
  $Stmt->store_result();
  $Stmt->bind_result($Res);
  $Stmt->fetch();
echo 'OK';
  $Stmt->close();
  $DB->close();
var_dump($Res);
?>

SQL:
DROP PROCEDURE IF EXISTS `Proc1`;
DELIMITER //
CREATE DEFINER=`root`@`localhost` PROCEDURE `Proc1`()
  LANGUAGE SQL
  NOT DETERMINISTIC
  CONTAINS SQL
  SQL SECURITY DEFINER
  COMMENT ''
BEGIN
  DECLARE Temp CURSOR FOR
    SELECT 15 AS Result;

  OPEN Temp;
  CLOSE Temp;
  SELECT 20 AS Result;
END//
DELIMITER ;

Expected result:
----------------
"OKint(20)" is expected to be output without any error messages.

Actual result:
--------------
A call to $Stmt->fetch() fails with "Packets out of order" message.

I am also experiencing exactly the same issue.  PHP v5.3.8 on
ApacheFriends XAMPP version 1.7.7

Using mysqli directly works fine, just the PDO statement bringing back the error 
upon fetch() or fetchall()

In addition, it doesn't matter if the cursor is embedded from a second called 
stored procedure.  As soon as OPEN cursor is called it throws the error.  Am 
wondering if PDO Statement is finding trouble deducing what columns are going to 
be returned and the cursor confuses it?

Found the problem in my scenario.  You can't use cursors in stored procedures 
using PDO and having this in your connection params:

$this->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);

If removed, or set to true (the default), it starts to work.

This does raise a possible SQL injection issue as the SQL statement and params 
are no longer sent to the server independently.

Hope this helps someone.

Crash reproduced with 5.4, 5.5, 5.6 and 7 . Probably has something to do with the cursor opened in the SP. A SP which also generates a result set, like BEGIN SELECT 1; END doesn't crash.

Crash reproduced with mysqli

delimiter //
CREATE PROCEDURE `test`()
BEGIN
declare test_var varchar(100) default "ciao";
declare bNoMoreRows bool default false;
declare test_cursor cursor for
    select id from tmp_folder;
declare continue handler for not found set bNoMoreRows := true;
create temporary table tmp_folder select "test" as id;
open test_cursor;
fetch test_cursor into test_var;
close test_cursor;
select test_var;
drop temporary table if exists tmp_folder;
END//


./php -r '$c=mysqli_connect("127.0.0.1", "root","", "test");$s=$c->prepare("CALL test()");var_dump($s->execute());var_dump($s->get_result());'

Same problem in PHP 7.1.26, always not fixed.

This should be fixed by https://github.com/php/php-src/commit/bc166844e37a6e1531a18dc0916fbe508152fc6c.