How PHP uses the array_map function

This article mainly introduces PHP how to use the array_map function, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let Xiaobian take you to understand.

Only one or more parameters are accepted in the array_map closure, and the number of parameters in the closure must be the same as that in the array_map itself.

$input = ['key' = >' value']; array_map (function ($key, $value) {echo $key. $value;}, array_keys ($input), $input) / / 'keyvalue'$double = function ($item) {return 2 * $item;} $result = array_map ($double, [1mem2mae3]) / / 246 Thank you for reading this article carefully. I hope the article "how to use the array_map function in PHP" shared by the editor will be helpful to you. At the same time, I also hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!