Description:
------------
the tables contain two fields, each with 10000 rows where the names are just 10-digit numbers

when I use the mysqli_stmt_bind_param, I get the 'memory could not be "read"' error, when not used I get no error

Reproduce code:
---------------
<?php
$db = new mysqli("localhost","root","","test");
$tables = array('t_0','t_1','t_2','t_3','t_5','t_all');
foreach($tables AS $table){
	$stmt[$table] = $db->stmt_init();
	$stmt[$table]->prepare("SELECT id, name FROM " . $table . " WHERE name = ?");
	$stmt[$table]->bind_param('i',$name);
}
for($i = 0;$i < 10;$i++){
	$name = "";
	for($j = 0;$j < 10;$j++){
		$name .= rand(0,9);
	}

	foreach($tables AS $table){
		$stmt[$table]->execute();
	}
}
$db->close();
?>

Actual result:
--------------
'The instruction "0x00df82df" referenced memory at "0x0000000064". The memory could not be "read".'