关于json_encode一些坑

今天药忘吃喽~ 2022-06-05 09:10 216阅读 0赞

json\_encode可以把数组转换为Json字符串，但有时会转成这样\{“name”:”sdfsdfsdf”,”summary”:”sdf”,”count”:”32165”,”price”:”213”,”specifications”:”sdf:sdf|sdf”,”category\_id”:”67”,”updated\_at”:”2017-11-23 10:57:05”,”created\_at”:”2017-11-23 10:57:05”,”id”:51\},\{“name”:”dfvgsdf”,”summary”:”sdfsd”,”count”:”231”,”price”:”123”,”specifications”:”fsd:sdf|sdf”,”category\_id”:”62”,”updated\_at”:”2017-11-23 10:45:10”,”created\_at”:”2017-11-23 10:45:10”,”id”:50\},\{“name”:”\\u6df1\\u5165\\u6c6a\\u51fanode.js”,”summary”:”\\u7b2c\\u4e00\\u672c\\u6df1\\u5165\\u8bb2\\u89e3node\\u7684\\u4e66,\\u6e90\\u7801\\u7ea7\\u522b\\u63a2\\u7d22”,”price”:”1000.00”,”shopcount”:66,”preview”:” \\/images\\/1.jpg”,”id”:1\},\{“name”:”react”,”summary”:”\\u8eab\\u51fa\\u540d\\u95e8,facebook\\u5f00\\u6e90\\u533a\\u9c9c”,”price”:”10.00”,”shopcount”:66,”preview”:” \\/images\\/1.jpg”,”id”:3\},\{“name”:”reactnative”,”summary”:”web\\u7aef\\u79fb\\u52a8\\u5e94\\u7528\\u5f00\\u53d1”,”price”:”10.00”,”shopcount”:66,”preview”:” \\/images\\/1.jpg”,”id”:4\},\{“name”:”reactnative”,”summary”:”web\\u7aef\\u79fb\\u52a8\\u5e94\\u7528\\u5f00\\u53d1”,”price”:”84.00”,”shopcount”:81,”preview”:”\\/images\\/1.jpg”,”id”:5\},\{“name”:”reactnative”,”summary”:”web\\u7aef\\u79fb\\u52a8\\u5e94\\u7528\\u5f00\\u53d1”,”price”:”84.00”,”shopcount”:81,”preview”:”\\/images\\/1.jpg”,”id”:8\},\{“name”:”reactnative”,”summary”:”web\\u7aef\\u79fb\\u52a8\\u5e94\\u7528\\u5f00\\u53d1”,”price”:”84.00”,”shopcount”:81,”preview”:”\\/images\\/1.jpg”,”id”:10\},\{“name”:”reactnative”,”summary”:”web\\u7aef\\u79fb\\u52a8\\u5e94\\u7528\\u5f00\\u53d1”,”price”:”84.00”,”shopcount”:81,”preview”:”\\/images\\/1.jpg”,”id”:14\},\{“name”:”reactnative”,”summary”:”web\\u7aef\\u79fb\\u52a8\\u5e94\\u7528\\u5f00\\u53d1”,”price”:”84.00”,”shopcount”:81,”preview”:”\\/images\\/1.jpg”,”id”:15\},\{“name”:”reactnative”,”summary”:”web\\u7aef\\u79fb\\u52a8\\u5e94\\u7528\\u5f00\\u53d1”,”price”:”84.00”,”shopcount”:898,”preview”:”\\/images\\/1.jpg”,”id”:16\}\]”(对象格式),有时又是这样”\{“0”:\{“name”:”sdfsdfsdf”,”summary”:”sdf”,”count”:”32165”,”price”:”213”,”specifications”:”sdf:sdf|sdf”,”category\_id”:”67”,”updated\_at”:”2017-11-23 10:57:05”,”created\_at”:”2017-11-23 10:57:05”,”id”:51\},”1”:\{“name”:”dfvgsdf”,”summary”:”sdfsd”,”count”:”231”,”price”:”123”,”specifications”:”fsd:sdf|sdf”,”category\_id”:”62”,”updated\_at”:”2017-11-23 10:45:10”,”created\_at”:”2017-11-23 10:45:10”,”id”:50\},”2”:\{“name”:”\\u6df1\\u5165\\u6c6a\\u51fanode.js”,”summary”:”\\u7b2c\\u4e00\\u672c\\u6df1\\u5165\\u8bb2\\u89e3node\\u7684\\u4e66,\\u6e90\\u7801\\u7ea7\\u522b\\u63a2\\u7d22”,”price”:”1000.00”,”shopcount”:66,”preview”:” \\/images\\/1.jpg”,”id”:1\},”3”:\{“name”:”react”,”summary”:”\\u8eab\\u51fa\\u540d\\u95e8,facebook\\u5f00\\u6e90\\u533a\\u9c9c”,”price”:”10.00”,”shopcount”:66,”preview”:” \\/images\\/1.jpg”,”id”:3\},”4”:\{“name”:”reactnative”,”summary”:”web\\u7aef\\u79fb\\u52a8\\u5e94\\u7528\\u5f00\\u53d1”,”price”:”10.00”,”shopcount”:66,”preview”:” \\/images\\/1.jpg”,”id”:4\},”5”:\{“name”:”reactnative”,”summary”:”web\\u7aef\\u79fb\\u52a8\\u5e94\\u7528\\u5f00\\u53d1”,”price”:”84.00”,”shopcount”:81,”preview”:”\\/images\\/1.jpg”,”id”:5\},”8”:\{“name”:”reactnative”,”summary”:”web\\u7aef\\u79fb\\u52a8\\u5e94\\u7528\\u5f00\\u53d1”,”price”:”84.00”,”shopcount”:81,”preview”:”\\/images\\/1.jpg”,”id”:14\},”9”:\{“name”:”reactnative”,”summary”:”web\\u7aef\\u79fb\\u52a8\\u5e94\\u7528\\u5f00\\u53d1”,”price”:”84.00”,”shopcount”:81,”preview”:”\\/images\\/1.jpg”,”id”:15\},”10”:\{“name”:”reactnative”,”summary”:”web\\u7aef\\u79fb\\u52a8\\u5e94\\u7528\\u5f00\\u53d1”,”price”:”84.00”,”shopcount”:898,”preview”:”\\/images\\/1.jpg”,”id”:16\}\}”(数组格式)  
在把数组转换为json字符串时，json\_decode是靠什么规则来选定转换的json格式呢?如果数组的键值是默认的索引，没有经过任何操作的索引。就像这个数组`$arr=array(array('lala'=>100,'baba'=>100),array('lala'=>100,'baba'=>100));`这个就会转为第一种的数组格式。其他情况只要索引不是元素所在的位置，就会转为对象格式