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json格式转数组注意事项
今天遇到一个特别奇葩的问题，json格式明明是正确的，转数组时却就是出不来，后来才发现是文件的编码问题，文件的编码一定要是utf-8无BOM格式，这点一定要切记！切记！
如果想确认json是否正确：http://www.kjson.com/
json格式的城市：
<?php $json = ‘{ "北京": { "key": 11, "defaultvalue": 1, "values": { "东城区": 1, "西城区": 2, "崇文区": 3, "宣武区": 4, "朝阳区": 5, "丰台区": 6, "石景山区": 7, "海淀区": 8, "门头沟区": 9, "房山区": 11, "通州区": 12, "顺义区": 13, "昌平区": 14, "大兴区": 15, "怀柔区": 16, "平谷区": 17, "密云县": 28, "延庆县": 29 //注意：此处不能有逗号，否则会出错 } }, "天津": { "key": 12, "defaultvalue": 1, "values": { "和平区": 1, "河东区": 2, "河西区": 3, "南开区": 4, "河北区": 5, "红桥区": 6, "塘沽区": 7, "汉沽区": 8, "大港区": 9, "东丽区": 10, "西青区": 11, "津南区": 12, "北辰区": 13, "武清区": 14, "宝坻区": 15, "宁河县": 21, "静海县": 23, "蓟县": 25 } }, "河北": { "key": 13, "defaultvalue": 1, "values": { "石家庄": 1, "唐山": 2, "秦皇岛": 3, "邯郸": 4, "邢台": 5, "保定": 6, "张家口": 7, "承德": 8, "沧州": 9, "廊坊": 10, "衡水": 11 } }, "山西": { "key": 14, "defaultvalue": 1, "values": { "太原": 1, "大同": 2, "阳泉": 3, "长治": 4, "晋城": 5, "朔州": 6, "晋中": 7, "运城": 8, "忻州": 9, "临汾": 10, "吕梁": 23 } }, "内蒙古": { "key": 15, "defaultvalue": 1, "values": { "呼和浩特": 1, "包头": 2, "乌海": 3, "赤峰": 4, "通辽": 5, "鄂尔多斯": 6, "呼伦贝尔": 7, "兴安盟": 22, "锡林郭勒盟": 25, "乌兰察布盟": 26, "巴彦淖尔盟": 28, "阿拉善盟": 29 } }, "辽宁": { "key": 21, "defaultvalue": 1, "values": { "沈阳": 1, "大连": 2, "鞍山": 3, "抚顺": 4, "本溪": 5, "丹东": 6, "锦州": 7, "营口": 8, "阜新": 9, "辽阳": 10, "盘锦": 11, "铁岭": 12, "朝阳": 13, "葫芦岛": 14 } }, "吉林": { "key": 22, "defaultvalue": 1, "values": { "长春": 1, "吉林": 2, "四平": 3, "辽源": 4, "通化": 5, "白山": 6, "松原": 7, "白城": 8, "延边朝鲜族自治州": 24 } }, "黑龙江": { "key": 23, "defaultvalue": 1, "values": { "哈尔滨": 1, "齐齐哈尔": 2, "鸡西": 3, "鹤岗": 4, "双鸭山": 5, "大庆": 6, "伊春": 7, "佳木斯": 8, "七台河": 9, "牡丹江": 10, "黑河": 11, "绥化": 12, "大兴安岭": 27 } }, "上海": { "key": 31, "defaultvalue": 1, "values": { "黄浦区": 1, "卢湾区": 3, "徐汇区": 4, "长宁区": 5, "静安区": 6, "普陀区": 7, "闸北区": 8, "虹口区": 9, "杨浦区": 10, "闵行区": 12, "宝山区": 13, "嘉定区": 14, "浦东新区": 15, "金山区": 16, "松江区": 17, "青浦区": 18, "南汇区": 19, "奉贤区": 20, "崇明县": 30 } }, "江苏": { "key": 32, "defaultvalue": 1, "values": { "南京": 1, "无锡": 2, "徐州": 3, "常州": 4, "苏州": 5, "南通": 6, "连云港": 7, "淮安": 8, "盐城": 9, "扬州": 10, "镇江": 11, "泰州": 12, "宿迁": 13 } }, "浙江": { "key": 33, "defaultvalue": 1, "values": { "杭州": 1, "宁波": 2, "温州": 3, "嘉兴": 4, "湖州": 5, "绍兴": 6, "金华": 7, "衢州": 8, "舟山": 9, "台州": 10, "丽水": 11 } }, "安徽": { "key": 34, "defaultvalue": 1, "values": { "合肥": 1, "芜湖": 2, "蚌埠": 3, "淮南": 4, "马鞍山": 5, "淮北": 6, "铜陵": 7, "安庆": 8, "黄山": 10, "滁州": 11, "阜阳": 12, "宿州": 13, "巢湖": 14, "六安": 15, "亳州": 16, "池州": 17, "宣城": 18 } }, "福建": { "key": 35, "defaultvalue": 1, "values": { "福州": 1, "厦门": 2, "莆田": 3, "三明": 4, "泉州": 5, "漳州": 6, "南平": 7, "龙岩": 8, "宁德": 9 } }, "江西": { "key": 36, "defaultvalue": 1, "values": { "南昌": 1, "景德镇": 2, "萍乡": 3, "九江": 4, "新余": 5, "鹰潭": 6, "赣州": 7, "吉安": 8, "宜春": 9, "抚州": 10, "上饶": 11 } }, "山东": { "key": 37, "defaultvalue": 1, "values": { "济南": 1, "青岛": 2, "淄博": 3, "枣庄": 4, "东营": 5, "烟台": 6, "潍坊": 7, "济宁": 8, "泰安": 9, "威海": 10, "日照": 11, "莱芜": 12, "临沂": 13, "德州": 14, "聊城": 15, "滨州": 16, "菏泽": 17 } }, "河南": { "key": 41, "defaultvalue": 1, "values": { "郑州": 1, "开封": 2, "洛阳": 3, "平顶山": 4, "安阳": 5, "鹤壁": 6, "新乡": 7, "焦作": 8, "濮阳": 9, "许昌": 10, "漯河": 11, "三门峡": 12, "南阳": 13, "商丘": 14, "信阳": 15, "周口": 16, "驻马店": 17 } }, "湖北": { "key": 42, "defaultvalue": 1, "values": { "武汉": 1, "黄石": 2, "十堰": 3, "宜昌": 5, "襄樊": 6, "鄂州": 7, "荆门": 8, "孝感": 9, "荆州": 10, "黄冈": 11, "咸宁": 12, "随州": 13, "恩施土家族苗族自治州": 28 } }, "湖南": { "key": 43, "defaultvalue": 1, "values": { "长沙": 1, "株洲": 2, "湘潭": 3, "衡阳": 4, "邵阳": 5, "岳阳": 6, "常德": 7, "张家界": 8, "益阳": 9, "郴州": 10, "永州": 11, "怀化": 12, "娄底": 13, "湘西土家族苗族自治州": 31 } }, "广东": { "key": 44, "defaultvalue": 1, "values": { "广州": 1, "韶关": 2, "深圳": 3, "珠海": 4, "汕头": 5, "佛山": 6, "江门": 7, "湛江": 8, "茂名": 9, "肇庆": 12, "惠州": 13, "梅州": 14, "汕尾": 15, "河源": 16, "阳江": 17, "清远": 18, "东莞": 19, "中山": 20, "潮州": 51, "揭阳": 52, "云浮": 53 } }, "广西": { "key": 45, "defaultvalue": 1, "values": { "南宁": 21, "柳州": 22, "桂林": 3, "梧州": 4, "北海": 5, "防城港": 6, "钦州": 7, "贵港": 8, "玉林": 9, "百色": 10, "贺州": 11, "河池": 12 } }, "海南": { "key": 46, "defaultvalue": 1, "values": { "海口": 1, "三亚": 2, "其他": 90 } }, "重庆": { "key": 50, "defaultvalue": 1, "values": { "万州区": 1, "涪陵区": 2, "渝中区": 3, "大渡口区": 4, "江北区": 5, "沙坪坝区": 6, "九龙坡区": 7, "南岸区": 8, "北碚区": 9, "万盛区": 10, "双桥区": 11, "渝北区": 12, "巴南区": 13, "黔江区": 14, "长寿区": 15, "綦江县": 22, "潼南县": 23, "铜梁县": 24, "大足县": 25, "荣昌县": 26, "璧山县": 27, "梁平县": 28, "城口县": 29, "丰都县": 30, "垫江县": 31, "武隆县": 32, "忠县": 33, "开县": 34, "云阳县": 35, "奉节县": 36, "巫山县": 37, "巫溪县": 38, "石柱土家族自治县": 40, "秀山土家族苗族自治县": 41, "酉阳土家族苗族自治县": 42, "彭水苗族土家族自治县": 43, "江津市": 81, "合川市": 82, "永川区": 83, "南川市": 84 } }, "四川": { "key": 51, "defaultvalue": 1, "values": { "成都": 1, "自贡": 3, "攀枝花": 4, "泸州": 5, "德阳": 6, "绵阳": 7, "广元": 8, "遂宁": 9, "内江": 10, "乐山": 11, "南充": 13, "眉山": 14, "宜宾": 15, "广安": 16, "达州": 17, "雅安": 18, "巴中": 19, "资阳": 20, "阿坝": 32, "甘孜": 33, "凉山": 34 } }, "贵州": { "key": 52, "defaultvalue": 1, "values": { "贵阳": 1, "六盘水": 2, "遵义": 3, "安顺": 4, "铜仁": 22, "黔西南": 23, "毕节": 24, "黔东南": 26, "黔南": 27 } }, "云南": { "key": 53, "defaultvalue": 1, "values": { "昆明": 1, "曲靖": 3, "玉溪": 4, "保山": 5, "昭通": 6, "楚雄": 23, "红河": 25, "文山": 26, "思茅": 27, "西双版纳": 28, "大理": 29, "德宏": 31, "丽江": 32, "怒江": 33, "迪庆": 34, "临沧": 35 } }, "西藏": { "key": 54, "defaultvalue": 1, "values": { "拉萨": 1, "昌都": 21, "山南": 22, "日喀则": 23, "那曲": 24, "阿里": 25, "林芝": 26 } }, "陕西": { "key": 61, "defaultvalue": 1, "values": { "西安": 1, "铜川": 2, "宝鸡": 3, "咸阳": 4, "渭南": 5, "延安": 6, "汉中": 7, "榆林": 8, "安康": 9, "商洛": 10 } }, "甘肃": { "key": 62, "defaultvalue": 1, "values": { "兰州": 1, "嘉峪关": 2, "金昌": 3, "白银": 4, "天水": 5, "武威": 6, "张掖": 7, "平凉": 8, "酒泉": 9, "庆阳": 10, "定西": 24, "陇南": 26, "临夏": 29, "甘南": 30 } }, "青海": { "key": 63, "defaultvalue": 1, "values": { "西宁": 1, "海东": 21, "海北": 22, "黄南": 23, "海南": 25, "果洛": 26, "玉树": 27, "海西": 28 } }, "宁夏": { "key": 64, "defaultvalue": 1, "values": { "银川": 1, "石嘴山": 2, "吴忠": 3, "固原": 4 } }, "新疆": { "key": 65, "defaultvalue": 1, "values": { "乌鲁木齐": 1, "克拉玛依": 2, "吐鲁番": 21, "哈密": 22, "昌吉": 23, "博尔塔拉": 27, "巴音郭楞": 28, "阿克苏": 29, "克孜勒苏": 30, "喀什": 31, "和田": 32, "伊犁": 40, "塔城": 42, "阿勒泰": 43 } }, "台湾": { "key": 71, "defaultvalue": 1, "values": { "台北": 1, "高雄": 2, "其他": 90 } }, "香港": { "key": 81, "defaultvalue": 1, "values": { "香港": 1 } }, "澳门": { "key": 82, "defaultvalue": 1, "values": { "澳门": 1 } }, "海外": { "key": 400, "defaultvalue": 1, "values": { "美国": 1, "英国": 2, "法国": 3, "俄罗斯": 4, "加拿大": 5, "巴西": 6, "澳大利亚": 7, "印尼": 8, "泰国": 9, "马来西亚": 10, "新加坡": 11, "菲律宾": 12, "越南": 13, "印度": 14, "日本": 15, "其他": 16 } } }‘; print_r(json_decode($json,true));//第二个参数true表示强制转成数组 ?>
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