3v4l.org

run code in 500+ PHP versions simultaneously
<?php print mb_convert_case("THE APOSTROPHE'S 'S' SHOULD NOT BE CAPITALISED\n", MB_CASE_TITLE); print mb_convert_case("People's issues versus people’s issues\n", MB_CASE_TITLE);
Output for 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
The Apostrophe's 'S' Should Not Be Capitalised People's Issues Versus People’s Issues
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33
The Apostrophe's 's' Should Not Be Capitalised People's Issues Versus People’S Issues
preferences:
100.64 ms | 1500 KiB | 4 Q