- var_dump: documentation ( source)
- array_shift: documentation ( source)
- asort: documentation ( source)
- array_keys: documentation ( source)
<?php
$arr = ['asd' => 23, 'asddd' => 1, 'as' => 22, 'asdddsas' => 0];
var_dump($arr);
asort($arr);
var_dump($arr);
$key = array_shift(array_keys($arr));
var_dump($key);