php解决json gbk编码中文null问题的实例代码

/**
 * gbk编码转utf-8
 * @param unknown $data
 * @return multitype:
 */
function gbk2utf8($data){
    if(is_array($data)){
        return array_map('gbk2utf8', $data);    
    }
    return iconv('gbk', 'utf-8', $data);
}
 
$arr=array('id'=>1,'name'=>'小王');
echo json_encode(gbk2utf8($arr));