如何检查用户是否在JSON数组中

Question

我如何检查＆＃34;用户＆＃34;在这个json里面：

{
players: [
"u",
"us",
"use",
"user",
"users"
]
}

Answer 1

您可以使用json_encode将json字符串转换为PHP数组，但是您需要添加＆＃34;＆＃34;在json字符串的索引上，像＆＃34;玩家＆＃34;在您的代码中，然后使用in_array搜索数组中的字符串。

$jsonString = '{"players": ["u","us","use", "user", "User", "users"]}';
$arr = json_decode($jsonString, true);
if(in_array("User", $arr['players']))
    echo "'User' is in the players\r\n";
else
    echo "'User' is NOT in the players\r\n";

Answer 2

这可能有效，使用json_decode：

$json ='{"players": ["u","us","use","User", "users"]}';
$playerlist = json_decode($json, true);

if(in_array("user", $playerlist['players']))
    echo "'user' found in players";
else
    echo "'user' not found in players";