<?php
echo uppercase_letters('ac84894987984987AD', 0, 2);
echo '
';
echo uppercase_letters('acaDdf984987Ad',0,10);
function uppercase_letters($str, $start, $end){
$strlen = strlen($str);
$str_uc = strtoupper(substr($str, $start, $end));
$then = substr($str, $end, $strlen);
return $str_uc . $then;
}
- 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 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- AC84894987984987AD
ACADDF984987Ad
preferences:
235.97 ms | 405 KiB | 369 Q