Description:
------------
I try to use mysqli_stmt_bind_param with several elements of an array as parameters. But it seems that these parameters are not updated properly.
In the sample code I initialize the var $data with two values. Otherwise I would get an error saying that the column is not allowed to be null, when I execute the statement.
These start values should be overwritten by the values generated by the explode function. print_r shows that the array $data gets updated as expected while the values transmitted by mysqli_stmt_execute are not.
If I place the mysqli_stmt_bind_param after the explode-command the script works as expected, but I think that's not how mysqli_stmt_bind_param is meant to be used.

Reproduce code:
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<?php
$dw = new mysqli("localhost", "****", "****", "testdb");
$dw->query("CREATE TABLE IF NOT EXISTS `test` (
		`filiale` smallint(5) unsigned NOT NULL,
		`berater` smallint(5) unsigned NOT NULL,
		PRIMARY KEY (`filiale`)
	)");

$data = array(1,2);
$test = array("10;123","20;456");

$stmt = $dw->prepare("INSERT INTO test (filiale, berater) VALUES (?,?)");
$stmt->bind_param("ii",$data[0],$data[1]);

foreach ($test as $buffer) {
	
	$data = explode(";", $buffer);
	print_r($data);

	$stmt->execute();
	echo $dw->error."<br>&nbsp;<br>";
}
$stmt = null;
$dw = null;
?>

Expected result:
----------------
Array ( [0] => 10 [1] => 123 )
 
Array ( [0] => 20 [1] => 456 )

Actual result:
--------------
Array ( [0] => 10 [1] => 123 )
 
Array ( [0] => 20 [1] => 456 ) Duplicate entry '1' for key 1