3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = '0'; var_dump($a[0]); $a = 0; var_dump($a[0]);
Output for 8.3.0 - 8.3.6
string(1) "0" Warning: Trying to access array offset on int in /in/jd52e on line 6 NULL
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
string(1) "0" Warning: Trying to access array offset on value of type int in /in/jd52e on line 6 NULL
Output for 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
string(1) "0" Notice: Trying to access array offset on value of type int in /in/jd52e on line 6 NULL
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 - 5.5.37, 5.6.0 - 5.6.23, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.26
string(1) "0" NULL
preferences:
258.8 ms | 404 KiB | 379 Q