3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo mb_strlen("안녕", "utf-16"); echo strlen(utf8_encode("안녕")); echo utf8_encode("안녕");
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
3 Deprecated: Function utf8_encode() is deprecated in /in/UNFqg on line 3 12 Deprecated: Function utf8_encode() is deprecated in /in/UNFqg on line 4 안녕
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 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.1.28
312안녕

preferences:
258.33 ms | 405 KiB | 460 Q