<?php
function returns_null(): void {
return null; // Fatal error: A void function must not return a value
}
function returns_null2(): void {
return ; // Fatal error: A void function must not return a value
}
try {
returns_null();
returns_null2();
echo "OK!";
}
catch (Error $e) {
echo "Error:";
var_dump($e);
}
Fatal error: A void function must not return a value (did you mean "return;" instead of "return null;"?) in /in/dvB65 on line 4
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
Fatal error: A void function must not return a value (did you mean "return;" instead of "return null;"?) in /in/dvB65 on line 4
Process exited with code 255.
Output for 7.0.0 - 7.0.33
Error:object(TypeError)#1 (7) {
["message":protected]=>
string(73) "Return value of returns_null() must be an instance of void, null returned"
["string":"Error":private]=>
string(0) ""
["code":protected]=>
int(0)
["file":protected]=>
string(9) "/in/dvB65"
["line":protected]=>
int(4)
["trace":"Error":private]=>
array(1) {
[0]=>
array(4) {
["file"]=>
string(9) "/in/dvB65"
["line"]=>
int(13)
["function"]=>
string(12) "returns_null"
["args"]=>
array(0) {
}
}
}
["previous":"Error":private]=>
NULL
}
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting '{' in /in/dvB65 on line 3
Process exited with code 255.