Description:
------------
On this documument page : http://php.net/manual/fr/mysqli-stmt.bind-param.php
Last user comment (nick9v at hotmail dot com 30-Jun-2012 10:12) is very useful but contains a little mistake.

The function 
public function add( $type, $value ){
        $this->values[] = $value;
        $this->types .= $type;
    }

Should be 
public function add( $type, &$value ){
        $this->values[] = $value;
        $this->types .= $type;
    }

Otherwise, this : 
call_user_func_array( array($stm, 'bind_param'), $bindParam->get());

Will return this :
Warning: Parameter 2 to mysqli_stmt::bind_param() expected to be a reference, value given



Test script:
---------------
// class BindParam copied from user comment

$bindParam = new BindParam();
$qArray = array();
$column1NewValue = $_POST['column1'];
$column2NewValue = $_POST['column1'];

$qArray[] = 'Column1 = ?';
$bindParam->add('i', $column1NewValue );
$qArray[] = 'Column2 = ?';
$bindParam->add('s', $column2NewValue );

$query = 'UPDATE myTable SET ';
$query.= implode(' , ', $qArray);
$query.= ' WHERE PKeyID= ?';
$bindParam->add('i', $lineToUpdate);

$stmt = $mysqli->prepare($query);

call_user_func_array(array($stmt, 'bind_param'), $bindParam->get());

$stmt->execute();
$stmt->close();

Expected result:
----------------
Row in database properly updated.

Actual result:
--------------
( ! ) Warning: Parameter 2 to mysqli_stmt::bind_param() expected to be a reference, value given in c:\path\myfile.php on line 157
Call Stack
#	Time	Memory	Function	Location
1	0.0010	297832	{main}( )	..\myfile.php:0
2	0.0059	322952	call_user_func_array ( )	..\myfile.php:157