php得到当前ip/url的完整地址函数

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php得到当前ip/url的完整地址函数

这两个函数可靠性强：
<?
function get_ip() {
if ($_SERVER) {
if ( $_SERVER[HTTP_X_FORWARDED_FOR] ) {
$realip = $_SERVER["HTTP_X_FORWARDED_FOR"];
} elseif ( $_SERVER["HTTP_CLIENT_ip"] ) {
$realip = $_SERVER["HTTP_CLIENT_ip"];
} else {
$realip = $_SERVER["REMOTE_ADDR"];
}

} else {
if ( getenv( 'HTTP_X_FORWARDED_FOR' ) ) {
$realip = getenv( 'HTTP_X_FORWARDED_FOR' );
} elseif ( getenv( 'HTTP_CLIENT_ip' ) ) {
$realip = getenv( 'HTTP_CLIENT_ip' );
} else {
$realip = getenv( 'REMOTE_ADDR' );
}
}
return $realip;
}
echo get_ip();
?>
<?php
function getUrl(){
$url="http://".$_SERVER["HTTP_HOST"];

if(isset($_SERVER["REQUEST_URI"])){
$url.=$_SERVER["REQUEST_URI"];
}
else{
$url.=$_SERVER["PHP_SELF"];
if(!empty($_SERVER["QUERY_STRING"])){
$url.="?".$_SERVER["QUERY_STRING"];
}
}

return $url;
}

echo getUrl();
?>