array index foreach php code example

Example 1: forreah php

$arr = array(1, 2, 3, 4);
foreach ($arr as &$value) {
    $value = $value * 2;
}

Example 2: php foreach index

foreach($array as $key=>$value) {
    // do stuff
}

Example 3: php foreach index

Blog::whereYear('created_at', 2017)->get();