- var_dump: documentation ( source)
- array_merge: documentation ( source)
<?php
$nitins = ["firstName" => "Nitin", "lastName" => "sharma", "location" => "india", "job profile" => "shopOwner"];
$listOfnitin = [];
foreach($nitins as $nitinKey => $nitinVal){
$details = [$nitinKey. " " . $nitinVal];
$listOfnitin = array_merge($listOfnitin, $details);
}
var_dump($listOfnitin);