function : PHP Fatal error: Only variables can be passed by reference

[zaoqi-unsafe]

PHP Fatal error:  Only variables can be passed by reference in /home/zaoqi/the-language/core/pure/php/lang.php on line 283

源 https://gitlab.com/the-language/the-language/blob/0cf321e1d779e37a602bee2417d2d302ce6d47ad/core/pure/typescript/lang.ts
结果

function list_to_jsArray($xs, &$k_done, &$k_tail) {     $ret = array();     while (construction_p($xs)) {         array_push($ret, construction_head($xs));         $xs = construction_tail($xs);     }     if (null_p($xs)) {         return k_done($ret);     }     return k_tail($ret, $xs); } function maybe_list_to_jsArray($xs) {     return list_to_jsArray($xs, function ($xs){     return $xs;     }, function ($xs, $x){     return false;     }); }

[zaoqi-unsafe]

闭包本身不能直接按引用传递。