如何分组日期并计算重量总和然后放入 assoc 数组 php?
{name:"A",date:"2012-12-11",order:1,time:3,weight:10},
{name:"A",date:"2012-12-11",order:1,time:4,weight:12},
{name:"B",date:"2012-12-11",order:1,time:3,weight:17},
{name:"A",date:"2012-12-12",order:1,time:5,weight:50},
{name:"A",date:"2012-12-12",order:2,time:3,weight:70}
根据这个重量总和一天一天,但问题是如果(相同日期相同订单相同名称;哪个更大的时间占其权重,不在乎)但不同的名称或订单占组的总和。
结果必须是这样的:
{date:2012-12-11,weight:29},
{date:2012-12-12,weight:120},
有人帮忙吗?它可以像
{name:"A",date:"2012-12-11",order:1,time:3,weight:10},
{name:"B",date:"2012-12-11",order:1,time:3,weight:17},
{name:"A",date:"2012-12-11",order:1,time:4,weight:12},
{name:"A",date:"2012-12-12",order:1,time:5,weight:50},
{name:"A",date:"2012-12-12",order:2,time:3,weight:70}