3v4l.org

run code in 300+ PHP versions simultaneously
<?php $abc = array( 'rec_1' => array('fn'=>'Aron','ln'=>'Michaelson'), 'rec_2' => array('fn'=>'Abbey','ln'=>'Drake'), 'rec_3' => array('fn'=>'Alice','ln'=>'Peterson')); function SortByLname($a,$b) { return strcmp( $a['ln'], $b['ln'] ); } usort($abc, "SortByLname"); foreach ($abc as $item) { echo strtoupper($item['ln']) . ', ' . $item['fn'] . "\n"; }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
DRAKE, Abbey MICHAELSON, Aron PETERSON, Alice
preferences:
326.17 ms | 406 KiB | 464 Q