Get Host domain name function

search, I want to use, paste it out, look at the wood has a problem ah! Echo $HTTP _host is the domain name to output! function pma_getenv ($var _name) { if (isset ($_server [$var _name]) { return $_server [$var _name]; } elseif (Isset ($_env [$var _name]) { return $_env [$var _name]; } elseif (getenv ($var _name)) { return getenv ($var _name); } elseif (function_exists (' apache_getenv ') && apache_getenv ($var _name, True) { return Apach E_getenv ($var _name, true); } return '; } if (empty ($HTTP _host)) { if (pma_getenv (' Http_host ')) { $HTTP _host = Pma_g Etenv (' Http_host '); } else { $HTTP _host = '; } } echo htmlspecialchars ($HTTP _host); copy code

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