key and value in php foreach code example

Example 1: foreach loop in php

<?php
$arr = ['Item 1', 'Item 2', 'Item 3'];

foreach ($arr as $item) {
  var_dump($item);
}

$dict = array("key1"=>"35", "key2"=>"37", "key3"=>"43");

foreach($dict as $key => $val) {
  echo "$key = $val<br>";
}
?>

Example 2: foreach ph

<?php
$arr = array(1, 2, 3, 4);
foreach ($arr as &$value) {
    $value = $value * 2;
}
// $arr is now array(2, 4, 6, 8)
unset($value); // break the reference with the last element
?>