<?php
function add($x)
{
return function($y = null) use ($x)
{
if (is_null($y)) return $x;
else return add($x + $y);
};
}
var_dump(add(2)->__invoke(40));
echo add(2)->__invoke(40)->__invoke();
- Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- object(Closure)#2 (2) {
["static"]=>
array(1) {
["x"]=>
int(42)
}
["parameter"]=>
array(1) {
["$y"]=>
string(10) "<optional>"
}
}
42
- 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 in /in/3YJkN on line 4
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 in /in/3YJkN on line 4
Process exited with code 255. - Output for 4.3.2 - 4.3.4
- Parse error: parse error in /in/3YJkN on line 4
Process exited with code 255.
preferences:
273.41 ms | 401 KiB | 455 Q