Question

Hey, PHP Newbie here,当时我试图这样做,以获得一个给我的IP。

致命错误: 不能自食其力:当没有班级范围活跃于第14行的/home/content/56/6442856/html/unlocking/Un entitledd-4.php。

我在这里做了什么错误?

另外,请记住:这里的PHP新bie,这样可以作尽可能多的解释。

增编

<?php 
function get_ip_address()
{
    foreach (array( HTTP_CLIENT_IP ,  HTTP_X_FORWARDED_FOR ,  HTTP_X_FORWARDED ,  HTTP_X_CLUSTER_CLIENT_IP ,  HTTP_FORWARDED_FOR ,  HTTP_FORWARDED ,  REMOTE_ADDR ) as $key)
    {
        if (array_key_exists($key, $_SERVER) === true)
        {
            foreach (explode( , , $_SERVER[$key]) as $ip)
            {
                $ip = trim($ip); // just to be safe

                if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) !== false)
                {
                    self::$ip = $ip; return $ip;
                }
            }
        }
    }
}

get_ip_address();
echo $ip;
?>

Answer 1

function get_ip_address()
{
    foreach (array( HTTP_CLIENT_IP ,  HTTP_X_FORWARDED_FOR ,  HTTP_X_FORWARDED ,  HTTP_X_CLUSTER_CLIENT_IP ,  HTTP_FORWARDED_FOR ,  HTTP_FORWARDED ,  REMOTE_ADDR ) as $key)
    {
        if (array_key_exists($key, $_SERVER) === true)
        {
            foreach (explode( , , $_SERVER[$key]) as $ip)
            {
                $ip = trim($ip); // just to be safe

                if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) !== false)
                {
                    return $ip;
                }
            }
        }
    }
}

echo get_ip_address();

而我不知道你是否真的需要这种职能才能获得客户的IP。

echo $_SERVER[ REMOTE_ADDR ];

可能有足够的仇恨

Answer 2

由于这一行,你重犯了错误:

self::$ip = $ip; return $ip;

页: 1 当你在一等舱内,并提及其固定成员之一时:

class Foo
{
    public static $my_static =  foo ;

    public function staticValue() {
        return self::$my_static; //It s correctly used here
    }
}

页: 1 它已经涵盖其中。

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