ThinkPHP 5.1.39 grouping and query a statistical method is as follows
FIG array obtained as follows:
php sort of basis functions:
- sort () - array in ascending order
- rsort () - array in descending order
- asort () - The value associated array, the array is in ascending order, holding key value
- ksort () - The bond associative array, the array is in ascending order, holding key value
- arsort () - The value associated array, the array in descending order, holding key value
- krsort () - The bond associative array, the array in descending order, holding key value
- array_multisort () - a multi-dimensional array sort,
The sum value of the descending order as follows:
The results are as follows:
