Flattening Arrays with PHP

flatten.php

<?php
//Good Article: http://www.cowburn.info/2012/03/17/flattening-a-multidimensional-array-in-php/
//Exmaple: http://www.tehplayground.com/#9zwqvG1XM

$aa = array("first name"=>"john","last name"=>"smith","more data"=>array("age"=>"12","role"=>"manager"),"gender"=>"male");

//flatten with keys
$output = iterator_to_array(new RecursiveIteratorIterator(
new RecursiveArrayIterator($aa)), TRUE);

print_r($output);



//flatten without keys
$output = iterator_to_array(new RecursiveIteratorIterator(
new RecursiveArrayIterator($aa)), FALSE);

print_r($output);



//pull out keys and values seperately via walking recursive
$keys=array();
$values=array();

array_walk_recursive($aa, function ($item, $key) use (&$keys,&$values)  {
    //echo "$key holds $item\n";
    $keys[] = $key;
    $values[] = '"'.$item.'"';
});

print_r($keys);
print_r($values);
?>