Online PHP editor | refs for FdE9S

<?php $res = strnatcmp(122,200); echo $res; $abc = array( 'rec_1' => array('fn'=>'Aron','ln'=>'Michaelson'), 'rec_2' => array('fn'=>'Abbey','ln'=>'Drake'), 'rec_3' => array('fn'=>'Alice','ln'=>'Peterson')); function build_sorter($key) { return function ($a, $b) use ($key) { return strnatcmp($a[$key], $b[$key]); }; } usort($abc, build_sorter('ln')); /*function SortByLname($a,$b) { return strcmp( $a['ln'], $b['ln'] ); } usort($abc, "SortByLname"); */ foreach ($abc as $item) { echo strtoupper($item['ln']) . ', ' . $item['fn'] . "\n"; }