3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace { function foo($n) { return $n; } } namespace A { use function foo; function foo($n) { return foo(2*$n); } var_dump(foo(1)); }
Output for 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 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: Cannot declare function A\foo because the name is already in use in /in/6s62o on line 12
Process exited with code 255.
Output for 5.6.8 - 5.6.21, 7.0.0 - 7.0.6
int(1)
Output for 5.5.24 - 5.5.35
Parse error: syntax error, unexpected 'function' (T_FUNCTION), expecting identifier (T_STRING) or \\ (T_NS_SEPARATOR) in /in/6s62o on line 10
Process exited with code 255.
preferences:
175.41 ms | 401 KiB | 182 Q