php数组(gb2312)转json(utf-8)

for($i = 0;$i<count($before);i++){
    $str[i] = iconv('GB2312', 'UTF-8', '$before[i]');//gb2312转换为utf-8
}
$after = json_encode($str,JSON_UNESCAPED_UNICODE)；//转换成json

iconv: 字符串按要求的字符编码来转换

iconv(‘源’,’目标’,’数据’)

json_encode:对变量进行 JSON 编码

json_encode(‘数据’,JSON_UNESCAPED_UNICODE)

JSON_UNESCAPED_UNICODE:不要编码Unicode,直接是汉字