PHP array_map() Function

PHP array_map() Function

The array_map() function  in PHP is used to return an array containing the results of applying the user-defined callback function over the elements of one or more arrays.

Syntax

array_map ( callable $callback , array $array1 [, array $... ] ) 

Parameter

callable(required)- This parameter represents the callback function to run for each element in each array.

array1(required)- This parameter specifies the input array.

…(optional)- It represents more arrays to map with.

Return

This function returns an array containing the results of applying the user-defined callback function over the elements of one or more arrays.

Example 1

Output

Array
 (
     [0] => 0
     [1] => 1
     [2] => 4
     [3] => 9
     [4] => 16
     [5] => 25
 ) 

Example 2

Output

Array
 (
     [0] => 0 is an even number
     [1] => 1 is an odd number
     [2] => 2 is an even number
     [3] => 3 is an odd number
     [4] => 4 is an even number
     [5] => 5 is an odd number
     [6] => 6 is an even number
 ) 

Example 3

Output

Array
 (
     [0] => 0
     [1] => 1
     [2] => 8
     [3] => 27 
     [4] => 64
     [5] => 125
     [6] => 216
 )