Question

我需要从$_SERVER['HTTP_HOST']

指定的字符串中删除www

我怎么能用PHP做到这一点？

Answer 1

$server_name = str_replace("www.", "", $_SERVER['HTTP_HOST']);

应该这样做......

Answer 2

if (substr($_SERVER['HTTP_HOST'], 0, 4) == 'www.') {
    $domain = substr($_SERVER['HTTP_HOST'], 4);
} else {
    $domain = $_SERVER['HTTP_HOST'];
}

Answer 3

客户要求的网站名称＆＃34; www.example.com＆＃34;

// explode the string at the '.' and inserts into an array 
$pieces = explode(".", $_SERVER['HTTP_HOST']); 
// $pieces array is now:
// now $pieces[0] contains "www"
// now $pieces[1] contains "example"
// now $pieces[2] contains "com"
// Put the domain name back together using concatenation operator ('.')
$DomainNameWithoutHostPortion =  $pieces[1].'.'.$pieces[2];
// now $DomainNameWithoutHostPortion contains "example.com"

Answer 4

你想要这个：

$_SERVER['HTTP_HOST'] = str_replace('www.', '',$_SERVER['HTTP_HOST']);

Answer 5

而不是str_replace，您可以使用ltrim：

$sender_domain = $_SERVER[HTTP_HOST];
$sender_domain = ltrim($sender_domain, 'www.');

Answer 6

下面

$host = str_replace('www.', null, $_SERVER['HTTP_HOST'])

你也可以

 $ht = "http://";
 $host = str_replace('www.',$ht, $_SERVER['HTTP_HOST'])

需要从$ _SERVER ['HTTP_HOST']中删除www怎么样？

6 个答案: