3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(html_entity_decode("&#39;")); var_dump(htmlentities("'"));
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(1) "'" string(6) "&#039;"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 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
string(5) "&#39;" string(1) "'"
Output for 5.0.0 - 5.0.4
string(1) "'" string(1) "'"

preferences:
295.85 ms | 401 KiB | 458 Q