<?php
$txt = <<<TXT
jkDDDJJJJjjjjJJlk
jhlkj_sdHHhhHhhHHHHHHH
kjhlkjh_JJJjjkkkkIIIIiiii
TXT;
echo preg_replace('/(.)(.*)/', '\u\1\L\2\E', $txt);
- 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, 5.5.24 - 5.5.35, 5.6.8 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- \uj\LkDDDJJJJjjjjJJlk\E
\uj\Lhlkj_sdHHhhHhhHHHHHHH\E
\uk\Ljhlkjh_JJJjjkkkkIIIIiiii\E
preferences:
207.74 ms | 406 KiB | 313 Q