This inbuilt function of PHP is used to reduce the elements of an array into a single value that can be of float, integer or string value. The function uses a user defined callback function to reduce the input array.
array_reduce($array, own_function, $initial)
The function takes three arguments and are described below:
- $array (mandatory): This is a mondatory parameter and refers to the original array from which we need to reduce.
- own_function (mandatory): This parameter is als mandatory and refers to the user defined function that is used to hold the value of the $array
- $initial (optional): This parameter is optional and refers to the value to be sent to the function.
Return Value: This function returns the reduced result. It can be of any type int, float or string.
Input : $array = (15, 120, 45, 78) $initial = 25 own_function() takes two parameters and concatenates them with "and" as a separator in between Output : 25 and 15 and 120 and 45 and 78 Input : $array = array(2, 4, 5); $initial = 1 own_function() takes two parameters and multiplies them. Output : 40
In this program we will see how an array of integer elements is reduced to a single string value. We also passed the intial element of our choice.
Initial and 15 and 120 and 45 and 78
In the below program, the array_reduce reduces the given array to the product of all the elements of the array using the own_function().
- How to get the function name inside a function in PHP ?
- PHP Ds\Set get() Function
- p5.js | cos() function
- PHP | next() Function
- D3.js | d3.map.set() Function
- PHP | Ds\Map map() Function
- PHP | Ds\Map last() Function
- PHP | key() Function
- p5.js | nf() Function
- p5.js | red() function
- D3.js | d3.lab() Function
- p5.js | int() function
- PHP | each() Function
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to email@example.com. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.