身份證前兩位對照身份表

$province = [
                11 => '北京',
                12 => '天津',
                13 => '河北',
                14 => '山西',
                15 => '內蒙古',
                21 => '遼寧',
                22 => '吉林',
                23 => '黑龍江',
                31 => '上海',
                32 => '江蘇',
                33 => '浙江',
                34 => '安徽',
                35 => '福建',
                36 => '江西',
                37 => '山東',
                41 => '河南',
                42 => '湖北',
                43 => '湖南',
                44 => '廣東',
                45 => '廣西',
                46 => '海南',
                50 => '重慶',
                51 => '四川',
                52 => '貴州',
                53 => '雲南',
                54 => '西藏',
                61 => '陝西',
                62 => '甘肅',
                63 => '青海',
                64 => '寧夏',
                65 => '新疆',
                71 => '臺灣',
                81 => '香港',
                82 => '澳門'

            ];

如果你在laravel框架裏，不妨在helper文件裏寫

//從身份證裏取所在地區
if (!function_exists('get_province_by_card')) {
    function get_province_by_card($card = '')
    {
        if (!empty($card)) {
            $province = [
                11 => '北京',
                12 => '天津',
                13 => '河北',
                14 => '山西',
                15 => '內蒙古',
                21 => '遼寧',
                22 => '吉林',
                23 => '黑龍江',
                31 => '上海',
                32 => '江蘇',
                33 => '浙江',
                34 => '安徽',
                35 => '福建',
                36 => '江西',
                37 => '山東',
                41 => '河南',
                42 => '湖北',
                43 => '湖南',
                44 => '廣東',
                45 => '廣西',
                46 => '海南',
                50 => '重慶',
                51 => '四川',
                52 => '貴州',
                53 => '雲南',
                54 => '西藏',
                61 => '陝西',
                62 => '甘肅',
                63 => '青海',
                64 => '寧夏',
                65 => '新疆',
                71 => '臺灣',
                81 => '香港',
                82 => '澳門'

            ];
            return array_get($province, substr($card, 0, 2), '');
        }
        return $card;
    }
}