Hi guys need help with foreach loop, I need to create array, called a with the items: [10, 3, 45, 98, 4, 7, 56, 23, 3, 1]. And then use a for-each loop to sum each item with 10 and put them in a new array called b.
Check code below it work on the same $a array but how to put them in a new array?
$a = [10, 3, 45, 98, 4, 7, 56, 23, 3, 1];
$b = [];
foreach ($a as &$value) {
$value = 10 + $value;
}
echo $a;
Generating a new array by performing the same operation on all elements of an input array is referred to as mapping, and this can also be done using a higher-order function in PHP, unless you are specifically required to use a foreach loop for some reason.
$b = array_map(function($n) { return $n + 10; }, $a);
Or with arrow function (as of PHP 7.4)
$b = array_map(fn($n) => $n + 10, $a);
You need to assign sum to each key in new array.
$a = [10, 3, 45, 98, 4, 7, 56, 23, 3, 1];
$b = [];
foreach ($a as $key => $value) {
$b[$key] = 10 + $value;
}
var_dump($b); // prints $b
This will also work if you will use $a as associative array:
$a = ['a' => 10, 'b' => 3, 'c' => 45];
$b = [];
foreach ($a as $key => $value) {
$b[$key] = 10 + $value;
}
var_dump($b); // prints $b
$value =to$b[] =maybe???$b[] =