使用vanilla PHP

Question

我似乎无法让它发挥作用。它获得了json和所有内容，它只是不想检查请求IP。

$wl_loc = "whitelist.json";
$wl = json_decode(file_get_contents($wl_loc), TRUE);

function get_client_ip_server() {
    $ipaddress = '';
    if ($_SERVER['HTTP_CLIENT_IP'])
        $ipaddress = $_SERVER['HTTP_CLIENT_IP'];
    else if($_SERVER['HTTP_X_FORWARDED_FOR'])
        $ipaddress = $_SERVER['HTTP_X_FORWARDED_FOR'];
    else if($_SERVER['HTTP_X_FORWARDED'])
        $ipaddress = $_SERVER['HTTP_X_FORWARDED'];
    else if($_SERVER['HTTP_FORWARDED_FOR'])
        $ipaddress = $_SERVER['HTTP_FORWARDED_FOR'];
    else if($_SERVER['HTTP_FORWARDED'])
        $ipaddress = $_SERVER['HTTP_FORWARDED'];
    else if($_SERVER['REMOTE_ADDR'])
        $ipaddress = $_SERVER['REMOTE_ADDR'];
    else
        $ipaddress = 'UNKNOWN';

    return $ipaddress;
}

$urip = get_client_ip_server();

foreach($wl as $arr) {
  $ip = $arr['ip'];
  if($urip == $ip) {
    header("Location: /maintenance/");
  }
}

和我的whitelist.json

[
  {
    "ip": "0.123.456.789"
  },
  {
    "ip": "123.456.789.0"
  }
]

我已经挣扎了好几个小时，看着整个互联网，我一无所获。我想要实现的是通过每个IP循环然后检查请求IP然后如果真的不重定向，否则如果为false然后重定向。

Answer 1

尝试以下代码，

$newArray   = array();
$myCallback = function($key) use(&$newArray){
  $newArray[] = $key["ip"];
};
array_walk($wl, $myCallback);
$urip = get_client_ip_server();
if(!in_array($urip, $newArray)) {
    header("Location: /maintenance/");
}

这里有一个简单的逻辑，

从主数组中创建一个新数组，该数组在单个维度中仅包含IP，并且使用if语句完成其余的工作。