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When running exec('rsync') with PHP, getting Warning: Error while sending QUERY packet.




Sorry for the missing cygcheck.out, the Spamfilter wouldn't let me pass. Every package is up to date.
rsync 3.1.2
php 7.0.19
mysql 10.1.19-MariaDB

Hi,

I encountered a rather strange PHP bug I could only reproduce in cygwin 
(32 Bit and 64 Bit).
If you have a working MySQL-Connection and then run exec('rsync') the 
next Query produces the Warning:
PHP Warning:  Error while sending QUERY packet. PID=15036 in 
/home/limora/test.php on line 5

See the attached test.php. It should output:
object(PDOStatement)#2 (1) {
   ["queryString"]=>
   string(16) "SELECT * FROM db"
}
object(PDOStatement)#2 (1) {
   ["queryString"]=>
   string(16) "SELECT * FROM db"
}

but it does output:
object(PDOStatement)#2 (1) {
   ["queryString"]=>
   string(16) "SELECT * FROM db"
}
PHP Warning:  Error while sending QUERY packet. PID=15036 in 
/home/limora/test.php on line 5
bool(false)

So far I could reproduce this with the MariaDB from cygwin as well as 
xampp, so I guess it's not a MySQL problem. I was only able to reproduce 
this with rsync so far and  no other cli program.

I'm completely stumped as to what could be causing this.

Cheers,
Björn
<?php
$pdo = new PDO('mysql:host=127.0.0.1;dbname=mysql', 'root');
var_dump($pdo->query('SELECT * FROM db'));
exec('rsync');
var_dump($pdo->query('SELECT * FROM db'));

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