Online PHP editor | refs for nggXg

<?php const UNIT_FACTOR = [ 'B' => 1, 'KB' => 1024, 'MB' => 1048576, 'GB' => 1073741824, ]; $array = [ 0 => "100 MB", 4 => "10 MB", 8 => "1GB", 12 => "20 MB", 16 => "250 MB", 20 => "2GB", 24 => "4 MB", 28 => "500 MB", 32 => "50 MB", 36 => "5GB", 40 => "8GB", 44 => "0 MB" ]; uasort( $array, function($a, $b) { sscanf($a, '%f%s', $amountA, $unitA); sscanf($b, '%f%s', $amountB, $unitB); return $amountA * UNIT_FACTOR[$unitA] <=> $amountB * UNIT_FACTOR[$unitB]; } ); var_export($array);