3v4l.org

run code in 300+ PHP versions simultaneously
<?php function array_map_(...$arrays, $callback) { return array_map($callback, ...$arrays); } var_dump(array_map_(['a'], ['b'], function($a, $b) { return strtoupper($a.$b); }));
Output for 5.6.8
Fatal error: Only the last parameter can be variadic in /in/eBQUO on line 3
Process exited with code 255.
Output for 5.4.0 - 5.4.40, 5.5.24
Parse error: syntax error, unexpected '.', expecting '&' or variable (T_VARIABLE) in /in/eBQUO on line 3
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '.', expecting '&' or T_VARIABLE in /in/eBQUO on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '.', expecting '&' or T_VARIABLE in /in/eBQUO on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '.', expecting ')' in /in/eBQUO on line 3
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
Parse error: parse error, unexpected '.', expecting ')' in /in/eBQUO on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/eBQUO on line 3
Process exited with code 255.

preferences:
211.82 ms | 1395 KiB | 132 Q