<?php
class ToStringMadness {
private $data;
public function __construct($data) {
$this->data = $data;
}
public function __toString() {
//$data = array_map(function($item) { return $item; }, $this->data);
$data = array_merge($data);
sort($data);
$rs = implode('-', $data);
echo $rs."\n";
return $rs;
}
}
$a = [
new ToStringMadness(['c','b']),
new ToStringMadness(['c','b','a']),
new ToStringMadness(['a','b']),
];
sort($a);
print_r($a);
usort($a, function(array $itemA, array $itemB) {
return strcmp((string)$itemA, (string)$itemB);
});
preferences:
54.5 ms | 402 KiB | 5 Q