在CodeIgniter 2应用程序中，当我执行密码恢复过程时，代码会触发php通知"非法偏移类型"。我发现这是因为它提交整个CI_DB_mysql_driver对象到活动记录类的_where函数，而通常它应该只是提交一个数据库字段数组(作为数组键)和各自的值(作为数组值)。

步骤如下:

1。用户模型中更新用户信息的函数

function update($data,$where,$value){
    $filter = $this->db->where($where,$value);
    $this->db->update('user',$data,$filter);
}

2。DB_active_rec.php中处理'where'部分mysql查询的函数

public function where($key, $value = NULL, $escape = TRUE){
    return $this->_where($key, $value, 'AND ', $escape);
    }
protected function _where($key, $value = NULL, $type = 'AND ', $escape = NULL)
{
    if ( ! is_array($key))
    {
            $newkey = array($key => $value);
            $key = $newkey;
    }
    // If the escape value was not set will will base it on the global setting
    if ( ! is_bool($escape))
    {
        $escape = $this->_protect_identifiers;
    }
    foreach ($key as $k => $v)
    {
        $prefix = (count($this->ar_where) == 0 AND count($this->ar_cache_where) == 0) ? '' : $type;
        if (is_null($v) && ! $this->_has_operator($k))
        {
            // value appears not to have been set, assign the test to IS NULL
            $k .= ' IS NULL';
        }
        if ( ! is_null($v))
        {
            if ($escape === TRUE)
            {
                $k = $this->_protect_identifiers($k, FALSE, $escape);
                $v = ' '.$this->escape($v);
            }
            if ( ! $this->_has_operator($k))
            {
                $k .= ' = ';
            }
        }
        else
        {
            $k = $this->_protect_identifiers($k, FALSE, $escape);
        }
        $this->ar_where[] = $prefix.$k.$v;
        if ($this->ar_caching === TRUE)
        {
            $this->ar_cache_where[] = $prefix.$k.$v;
            $this->ar_cache_exists[] = 'where';
        }
    }
    return $this;
}

它返回php通知"非法偏移类型"。下面的对象似乎是作为$key参数传递给_where函数的:

CI_DB_mysql_driver Object
(
[dbdriver] => mysql
[_escape_char] => `
[_like_escape_str] => 
[_like_escape_chr] => 
[delete_hack] => 1
[_count_string] => SELECT COUNT(*) AS 
[_random_keyword] =>  RAND()
[use_set_names] => 
[ar_select] => Array
    (
    )
[ar_distinct] => 
[ar_from] => Array
    (
    )
[ar_join] => Array
    (
    )
[ar_where] => Array
    (
        [0] => `u_email` =  'test@tester.com'
    )
[ar_like] => Array
    (
    )
[ar_groupby] => Array
    (
    )
[ar_having] => Array
    (
    )
[ar_keys] => Array
    (
    )
[ar_limit] => 
[ar_offset] => 
[ar_order] => 
[ar_orderby] => Array
    (
    )
[ar_set] => Array
    (
        [`u_pass`] => 'Vm4IOQZpBiIFJw=='
    )
[ar_wherein] => Array
    (
    )
[ar_aliased_tables] => Array
    (
    )
[ar_store_array] => Array
    (
    )
[ar_caching] => 
[ar_cache_exists] => Array
    (
    )
[ar_cache_select] => Array
    (
    )
[ar_cache_from] => Array
    (
    )
[ar_cache_join] => Array
    (
    )
[ar_cache_where] => Array
    (
    )
[ar_cache_like] => Array
    (
    )
[ar_cache_groupby] => Array
    (
    )
[ar_cache_having] => Array
    (
    )
[ar_cache_orderby] => Array
    (
    )
[ar_cache_set] => Array
    (
    )
[ar_no_escape] => Array
    (
    )
[ar_cache_no_escape] => Array
    (
    )
[username] => root
[password] => temproot
[hostname] => localhost
[database] => oceantailer
[dbprefix] => 
[char_set] => utf8
[dbcollat] => utf8_general_ci
[autoinit] => 1
[swap_pre] => 
[port] => 
[pconnect] => 1
[conn_id] => Resource id #29
[result_id] => Resource id #55
[db_debug] => 1
[benchmark] => 5.8174133300781E-5
[query_count] => 1
[bind_marker] => ?
[save_queries] => 1
[queries] => Array
    (
        [0] => SELECT *
   FROM (`user`)
   WHERE `u_email` =  'test@tester.com'
    )
[query_times] => Array
    (
        [0] => 5.8174133300781E-5
    )
[data_cache] => Array
    (
    )
[trans_enabled] => 1
[trans_strict] => 1
[_trans_depth] => 0
[_trans_status] => 1
[cache_on] => 
[cachedir] => 
[cache_autodel] => 
[CACHE] => 
[_protect_identifiers] => 1
[_reserved_identifiers] => Array
    (
        [0] => *
    )
[stmt_id] => 
[curs_id] => 
[limit_used] => 
[stricton] => 
)

如何防止这个php提示?