3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types=1); function foo($e) { var_dump( set_exception_handler('foo') ); restore_exception_handler(); echo "---" . PHP_EOL; exit; } set_exception_handler('foo'); register_shutdown_function(function () { var_dump( set_exception_handler(null) ); }); strlen(null);
Output for 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
NULL --- NULL
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29
string(3) "foo" --- string(3) "foo"
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Warning: Unsupported declare 'strict_types' in /in/HkWfh on line 3 string(3) "foo"
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45
Warning: Unsupported declare 'strict_types' in /in/HkWfh on line 3 bool(true)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/HkWfh on line 15
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION, expecting ')' in /in/HkWfh on line 15
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/HkWfh on line 15
Process exited with code 255.
preferences:
79.12 ms | 413 KiB | 5 Q