3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump( (unset) 'x', (unset) 42, (unset) 0.42, (unset) [42], (unset) new StdClass, (unset) null ); $a = "1"; (unset)$a; var_dump($a);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: The (unset) cast is no longer supported in /in/hFS6M on line 3
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Deprecated: The (unset) cast is deprecated in /in/hFS6M on line 3 Deprecated: The (unset) cast is deprecated in /in/hFS6M on line 4 Deprecated: The (unset) cast is deprecated in /in/hFS6M on line 5 Deprecated: The (unset) cast is deprecated in /in/hFS6M on line 6 Deprecated: The (unset) cast is deprecated in /in/hFS6M on line 7 Deprecated: The (unset) cast is deprecated in /in/hFS6M on line 8 Deprecated: The (unset) cast is deprecated in /in/hFS6M on line 11 NULL NULL NULL NULL NULL NULL string(1) "1"
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.3.32 - 7.3.33
NULL NULL NULL NULL NULL NULL string(1) "1"
preferences:
190.01 ms | 403 KiB | 272 Q