Shulou(Shulou.com)06/03 Report--

In this issue, the editor will bring you about how to understand PHP array_multisort. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.

For those who are learning the PHP language for the first time, they do not have a deep understanding of PHP's huge library of functions. Let's start with the parameters of PHP array_multisort. The parameters of this function are very flexible. The simplest case is to take 1 or n arrays as parameters as shown above, and it is important to note that each array has the same number of items, otherwise warning will invalidate sorting.

Array_multisort ($arr1,$arr2,$arr3) like this; the default is that all arrays are arranged in ascending order. If you want to descend $arr2 and compare it as a string, write:

Array_multisort ($arr1, $arr2, SORT_DESC, SORT_STRING, $arr3)

Each array can be followed by a sort order flag or a sort type flag, or both. However, only one sort flag can appear after each array.

PHP array_multisort sort order flag:

SORT_ASC-sort in ascending order (default)

SORT_DESC-sort in descending order

PHP array_multisort sort type flag:

SORT_REGULAR-compare projects in the usual way (default)

SORT_NUMERIC-compare items by numerical value

SORT_STRING-compare items by string

The above is the editor for you to share how to understand PHP array_multisort, if you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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