Mysqli bind param update - php

Question

I just started creating mysqli bind_param update function. My insert function works fine, but there i get error - Warning: mysqli_stmt::bind_param(): Number of elements in type definition string doesn't match number of bind variables. I dont get where is the problem.
My array = Array ( [bday_month] => 9 [bday_day] => 7 [bday_year] => 2003 [id] => 2 )
public function update($table, $data) {
if (empty($table) || empty($data)) {
return false;
}
$array_slice = array_slice($data, 0, count($data)-1);
$fields = implode(' = ?, ', array_keys($array_slice)) . ' = ?';
$stmt = $this->db->prepare("UPDATE `{$table}` SET {$fields} WHERE `id` = ?");
call_user_func_array(array($stmt, 'bind_param'), $this->refValues($data));
$stmt->execute();
}

Answer 1

Solved. I forget insert types.

Answer 2

i have this one worked for me you could see it
/**
* update
* #author Alaa M. Jaddou
* #param string $table A name of table to insert into
* #param string $data An associative array
* #param string $where the WHERE query part
*/
public function update($table, $data, $where)
{
ksort($data);
$fieldDetails = NULL;
foreach($data as $key=> $value) {
$fieldDetails .= "`$key`= ?,";
}
$fieldDetails = rtrim($fieldDetails, ',');
$sth = $this->prepare("UPDATE $table SET $fieldDetails WHERE $where");
$values = array();
foreach ($data as $key => $value) {
$values = implode(', ', $value);
}
$sth->bind_param($values);
return $sth->execute();
}