Untitled
unknown
php
3 years ago
312 B
1
Indexable
Never
<?php function reverse(string $str) { $first = 0; $last = strlen($str) - 1; while ($first < $last) { $tmpFirst = $str[$first]; $str[$first] = $str[$last]; $str[$last] = $tmpFirst; $first++; $last--; } return $str; } echo reverse('abc'), PHP_EOL;