如何在PHP中添加两个字符串？

Question

假设您有以下输入的此数组:

$relations["fname"] = 'firstname';
$relations["lname"] = 'lastname';

现在我想将以上两个值输入到下面(我知道语法不正确但我希望firstname和lastname字符串成为一个字符串并输入到secondarray中):

$secondarray["name"] = $relations["fname"] + $relations["lname"];

Answer 1

$secondarray["name"] = $relations["fname"] + $relations["lname"];

应该

$secondarray["name"] = $relations["fname"] . $relations["lname"];

该+运营商不超载连接字符串在PHP.

Answer 2

只是为了它的哎呀:-)

$relations["fname"] = 'firstname';
$relations["lname"] = 'lastname';
$secondarray["name"] = implode($relations," ");