blocks|key|77939|text|使用SERVER_NAME。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|77940|echo+$_SERVER['SERVER_NAME'];+//Outputs+www.example.com|code-block|syntax|javascript|77941|entityMap^0|2|B|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Use <code>SERVER_NAME</code>.

<pre><code>echo $_SERVER['SERVER_NAME']; //Outputs www.example.com
</code></pre>

blocks|key|295051|text|你可以使用PHP的parse_url()函数|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|295052|function+url($url)+{
++$result+=+parse_url($url);
++return+$result['scheme']."://".$result['host'];
}|code-block|syntax|javascript|295053|entityMap^0|9|B|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

You could use PHP's <code>parse_url()</code> function

<pre><code>function url($url) {
 $result = parse_url($url);
 return $result['scheme']."://".$result['host'];
}
</code></pre>

blocks|key|78021|text|最短解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|78022|$domain+=+parse_url('http://google.com',+PHP_URL_HOST);|code-block|syntax|javascript|78023|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Shortest solution:

<pre><code>$domain = parse_url('http://google.com', PHP_URL_HOST);
</code></pre>

blocks|key|295098|text|/**
+*+Suppose,+you+are+browsing+in+your+localhost+
+*+http://localhost/myproject/index.php?id=8
+*/
function+getBaseUrl()+
{
++++//+output:+/myproject/index.php
++++$currentPath+=+$_SERVER['PHP_SELF'];+

++++//+output:+Array+(+[dirname]+=>+/myproject+[basename]+=>+index.php+[extension]+=>+php+[filename]+=>+index+)+
++++$pathInfo+=+pathinfo($currentPath);+

++++//+output:+localhost
++++$hostName+=+$_SERVER['HTTP_HOST'];+

++++//+output:+http://
++++$protocol+=+strtolower(substr($_SERVER["SERVER_PROTOCOL"],0,5))=='https'?'https':'http';

++++//+return:+http://localhost/myproject/
++++return+$protocol.'://'.$hostName.$pathInfo['dirname']."/";
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|295099|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>/**
 * Suppose, you are browsing in your localhost 
 * http://localhost/myproject/index.php?id=8
 */
function getBaseUrl() 
{
 // output: /myproject/index.php
 $currentPath = $_SERVER['PHP_SELF']; 

 // output: Array ( [dirname] =&gt; /myproject [basename] =&gt; index.php [extension] =&gt; php [filename] =&gt; index ) 
 $pathInfo = pathinfo($currentPath); 

 // output: localhost
 $hostName = $_SERVER['HTTP_HOST']; 

 // output: http://
 $protocol = strtolower(substr($_SERVER["SERVER_PROTOCOL"],0,5))=='https'?'https':'http';

 // return: http://localhost/myproject/
 return $protocol.'://'.$hostName.$pathInfo['dirname']."/";
}
</code></pre>

blocks|key|77961|text|像这样使用parse_url()：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|77962|function+url(){
++++if(isset($_SERVER['HTTPS'])){
++++++++$protocol+=+($_SERVER['HTTPS']+&&+$_SERVER['HTTPS']+!=+"off")+?+"https"+:+"http";
++++}
++++else{
++++++++$protocol+=+'http';
++++}
++++return+$protocol+.+"://"+.+parse_url($_SERVER['REQUEST_URI'],+PHP_URL_HOST);
}|code-block|syntax|javascript|77963|下面是另一个更短的选项：|77964|function+url(){
++++$pu+=+parse_url($_SERVER['REQUEST_URI']);
++++return+$pu["scheme"]+.+"://"+.+$pu["host"];
}|77965|entityMap^0|5|B|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|P|$]]

Use <code>parse_url()</code> like this:

<pre><code>function url(){
 if(isset($_SERVER['HTTPS'])){
 $protocol = ($_SERVER['HTTPS'] &amp;&amp; $_SERVER['HTTPS'] != "off") ? "https" : "http";
 }
 else{
 $protocol = 'http';
 }
 return $protocol . "://" . parse_url($_SERVER['REQUEST_URI'], PHP_URL_HOST);
}
</code></pre>

Here is another shorter option:

<pre><code>function url(){
 $pu = parse_url($_SERVER['REQUEST_URI']);
 return $pu["scheme"] . "://" . $pu["host"];
}
</code></pre>

blocks|key|78063|text|第1步|type|unstyled|depth|inlineStyleRanges|entityRanges|data|78064|首先从URL中修剪尾随的反斜杠(/)。例如，如果URL为http://www.google.com/，则生成的URL将为http://www.google.com|offset|length|78065|$url=+trim($url,+'/');|code-block|syntax|javascript|78066|第2步|78067|如果方案未包含在URL中，则将其置于前面。例如，如果URL是www.google.com，那么得到的URL就是http://www.google.com。|78068|if+(!preg_match('#%5Ehttp(s)?://#',+$url))+{
++++$url+=+'http://'+.+$url;
}|78069|第3步|78070|获取URL的各个部分。|78071|$urlParts+=+parse_url($url);|78072|第4步|78073|现在删除www。从URL|78074|$domain+=+preg_replace('/%5Ewww\./',+'',+$urlParts['host']);|78075|没有http和www的最终域名现在存储在$domain变量中。|78076|示例：|78077|http://www.google.com+=>+google.com|78078|https://www.google.com+=>+google.com|78079|www.google.com+=>+google.com|78080|http://google.com+=>+google.com|78081|entityMap|0|LINK|mutability|MUTABLE|url|http://www.google.com/|1|2|3|4|https://www.google.com/|5|http://google.com/^0|0|S|M|0|1O|L|1|0|0|0|1J|L|2|0|0|0|0|0|0|0|0|0|0|0|L|3|0|0|M|4|0|0|0|H|5|0^^$0|@$1|2|3|4|5|6|7|1T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1U|8|@]|9|@$D|1V|E|1W|1|1X]|$D|1Y|E|1Z|1|20]]|A|$]]|$1|F|3|G|5|H|7|21|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|22|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|23|8|@]|9|@$D|24|E|25|1|26]]|A|$]]|$1|O|3|P|5|H|7|27|8|@]|9|@]|A|$I|J]]|$1|Q|3|R|5|6|7|28|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|29|8|@]|9|@]|A|$]]|$1|U|3|V|5|H|7|2A|8|@]|9|@]|A|$I|J]]|$1|W|3|X|5|6|7|2B|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|2C|8|@]|9|@]|A|$]]|$1|10|3|11|5|H|7|2D|8|@]|9|@]|A|$I|J]]|$1|12|3|13|5|6|7|2E|8|@]|9|@]|A|$]]|$1|14|3|15|5|6|7|2F|8|@]|9|@]|A|$]]|$1|16|3|17|5|6|7|2G|8|@]|9|@$D|2H|E|2I|1|2J]]|A|$]]|$1|18|3|19|5|6|7|2K|8|@]|9|@$D|2L|E|2M|1|2N]]|A|$]]|$1|1A|3|1B|5|6|7|2O|8|@]|9|@]|A|$]]|$1|1C|3|1D|5|6|7|2P|8|@]|9|@$D|2Q|E|2R|1|2S]]|A|$]]|$1|1E|3|-4|5|6|7|2T|8|@]|9|@]|A|$]]]|1F|$1G|$5|1H|1I|1J|A|$1K|1L]]|1M|$5|1H|1I|1J|A|$1K|1L]]|1N|$5|1H|1I|1J|A|$1K|1L]]|1O|$5|1H|1I|1J|A|$1K|1L]]|1P|$5|1H|1I|1J|A|$1K|1Q]]|1R|$5|1H|1I|1J|A|$1K|1S]]]]

<h2>Step-1</h2>

First trim the trailing backslash (/) from the URL. For example, If the URL is <a href="http://www.google.com/" rel="noreferrer">http://www.google.com/</a> then the resultant URL will be <a href="http://www.google.com" rel="noreferrer">http://www.google.com</a>

<pre><code>$url= trim($url, '/');
</code></pre>

<h2>Step-2</h2>

If scheme not included in the URL, then prepend it. So for example if the URL is www.google.com then the resultant URL will be <a href="http://www.google.com" rel="noreferrer">http://www.google.com</a>

<pre><code>if (!preg_match('#^http(s)?://#', $url)) {
 $url = 'http://' . $url;
}
</code></pre>

<h2>Step-3</h2>

Get the parts of the URL. 

<pre><code>$urlParts = parse_url($url);
</code></pre>

<h2>Step-4</h2>

Now remove www. from the URL

<pre><code>$domain = preg_replace('/^www\./', '', $urlParts['host']);
</code></pre>

Your final domain without http and www is now stored in $domain variable.

Examples:

<a href="http://www.google.com" rel="noreferrer">http://www.google.com</a> => google.com

<a href="https://www.google.com" rel="noreferrer">https://www.google.com</a> => google.com

www.google.com => google.com

<a href="http://google.com" rel="noreferrer">http://google.com</a> => google.com

blocks|key|78135|text|2行代码来解决这个问题|type|unstyled|depth|inlineStyleRanges|entityRanges|data|78136|$actual_link+=+(isset($_SERVER['HTTPS'])+&&+$_SERVER['HTTPS']+===+'on'+?+"https"+:+"http")+.+"://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
$myDomain+=+preg_replace('/%5Ewww\./',+'',+parse_url($actual_link,+PHP_URL_HOST));|code-block|syntax|javascript|78137|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

2 lines to solve it

<pre><code>$actual_link = (isset($_SERVER['HTTPS']) &amp;&amp; $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
$myDomain = preg_replace('/^www\./', '', parse_url($actual_link, PHP_URL_HOST));
</code></pre>

blocks|key|78144|text|/*+Get+sub+domain+or+main+domain+url
+*+$url+is+$_SERVER['SERVER_NAME']
+*+$index+int+remove+subdomain+if+acceess+from+sub+domain+my+current+url+is+https://support.abcd.com+("support"+=+7+(char))
+*+$subDomain+string+
+*+$issecure+string+https+or+http
+*+return+url
+*+call+like+echo+getUrl($_SERVER['SERVER_NAME'],7,"payment",true,false);
+*+out+put+https://payment.abcd.com
+*+second+call+echo+getUrl($_SERVER['SERVER_NAME'],7,null,true,true);
*/
function+getUrl($url,$index,$subDomain=null,$issecure=false,$www=true)+{
++//$url=$_SERVER['SERVER_NAME']
++$protocol=($issecure==true)+?++"https://"+:+"http://";
++$url=+substr($url,$index);
++$www+=($www==true)+?+"www":+"";
++$url=+empty($subDomain)+?+$protocol.$url+:+
++$protocol.$www.$subDomain.$url;
++return+$url;
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|78145|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>/* Get sub domain or main domain url
 * $url is $_SERVER['SERVER_NAME']
 * $index int remove subdomain if acceess from sub domain my current url is https://support.abcd.com ("support" = 7 (char))
 * $subDomain string 
 * $issecure string https or http
 * return url
 * call like echo getUrl($_SERVER['SERVER_NAME'],7,"payment",true,false);
 * out put https://payment.abcd.com
 * second call echo getUrl($_SERVER['SERVER_NAME'],7,null,true,true);
*/
function getUrl($url,$index,$subDomain=null,$issecure=false,$www=true) {
 //$url=$_SERVER['SERVER_NAME']
 $protocol=($issecure==true) ? "https://" : "http://";
 $url= substr($url,$index);
 $www =($www==true) ? "www": "";
 $url= empty($subDomain) ? $protocol.$url : 
 $protocol.$www.$subDomain.$url;
 return $url;
}
</code></pre>

blocks|key|78162|text|如果您还想使用http协议，这很好用，因为它可以是http或https。$domainURL+=+$_SERVER['REQUEST_SCHEME']."://".$_SERVER['SERVER_NAME'];|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|78163|entityMap^0|10|1Y|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

This works fine if you want the http protocol also since it could be http or https.
<code>
$domainURL = $_SERVER['REQUEST_SCHEME']."://".$_SERVER['SERVER_NAME'];
</code>

blocks|key|295347|text|使用这个代码是很麻烦的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|295348|if+(!preg_match('#%5Ehttp(s)?://#',+$url))+{
+++++++++$url+=+'http://'+.+$url;
}
$urlParts+=+parse_url($url);
$url+=+preg_replace('/%5Ewww\./',+'',+$urlParts['host']);|code-block|syntax|javascript|295349|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Use this code is whork :
<pre><code>if (!preg_match('#^http(s)?://#', $url)) {
 $url = 'http://' . $url;
}
$urlParts = parse_url($url);
$url = preg_replace('/^www\./', '', $urlParts['host']);
</code></pre>

blocks|key|77983|text|请尝试以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|77984|$uri+=+$_SERVER['REQUEST_URI'];+//+$uri+==+example.com/sub
$exploded_uri+=+explode('/',+$uri);+//$exploded_uri+==+array('example.com','sub')
$domain_name+=+$exploded_uri[1];+//$domain_name+=+'example.com'|code-block|syntax|javascript|77985|我希望这能对你有所帮助。|77986|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Please try this:

<pre><code>$uri = $_SERVER['REQUEST_URI']; // $uri == example.com/sub
$exploded_uri = explode('/', $uri); //$exploded_uri == array('example.com','sub')
$domain_name = $exploded_uri[1]; //$domain_name = 'example.com'
</code></pre>

I hope this will help you.

blocks|key|295221|text|十进制运算符有助于保持它的简短和简单。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|295222|echo+(isset($_SERVER['HTTPS'])+?+'http'+:+'https'+).+"://"+.+$_SERVER['SERVER_NAME']++;|code-block|syntax|javascript|295223|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Tenary Operator helps keep it short and simple.

<pre><code>echo (isset($_SERVER['HTTPS']) ? 'http' : 'https' ). "://" . $_SERVER['SERVER_NAME'] ;
</code></pre>

blocks|key|78187|text|如果你使用wordpress，使用get_site_url|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|78188|get_site_url()|code-block|syntax|javascript|78189|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.wordpress.org/reference/functions/get_site_url/^0|H|C|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

If you're using wordpress, use <a href="https://developer.wordpress.org/reference/functions/get_site_url/" rel="nofollow noreferrer">get_site_url</a>:

<pre><code>get_site_url()
</code></pre>

<pre><code>function url(){
 if(isset($_SERVER['HTTPS'])){
 $protocol = ($_SERVER['HTTPS'] &amp;&amp; $_SERVER['HTTPS'] != "off") ? "https" : "http";
 }
 else{
 $protocol = 'http';
 }
 return $protocol . "://" . $_SERVER['HTTP_HOST'];
}
</code></pre>

For example with the function above, it works fine if I work with the same directory, but if I make a sub directory, and work in it, it will give me the location of the sub directory also for example. I just want <code>example.com</code> but it gives me <code>example.com/sub</code> if I'm working in the folder <code>sub</code>. If I'm using the main directory,the function works fine. Is there an alternative to <code>$_SERVER['HTTP_HOST']</code>?

Or how could I fix my function/code to get the main url only? Thanks.

PHP how to get the base domain/url?

function url(){    if(isset($_SERVER['HTTPS'])){        $protocol = ($_SERVER['HTTPS'] && $_SERVER['HTTPS'] != "off") ? "https" : "http";    }    else{        $protocol = 'http';    }    return $proto

问PHP如何获取基域/url？
EN

回答 13

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问PHP如何获取基域/url？EN

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问PHP如何获取基域/url？
EN