blocks|key|1328004|text|我会试着：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1328005|echo+exec('whoami');|code-block|syntax|javascript|1328006|通常are服务器是在不同的用户名下运行的，所以这应该很能说明问题。|1328007|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|$]]

I'd try:

<pre><code>echo exec('whoami');
</code></pre>

Usually webservers are run under a different username, so that should be telling.

blocks|key|1543298|text|试一试|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1543299|isset($_SERVER['REQUEST_METHOD'])|code-block|syntax|javascript|1543300|如果已设置，则表示您在浏览器中。|1543301|或者，您可以检查是否|1543302|isset($_SERVER['argv'])|1543303|但在windows+CLI、IDK上可能并非如此。|1543304|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Try 

<pre><code>isset($_SERVER['REQUEST_METHOD'])
</code></pre>

if it's set, you're in a browser.

Alternatlely, you could check if 

<pre><code>isset($_SERVER['argv'])
</code></pre>

but that might not be true on windows CLI, IDK.

blocks|key|1543334|text|我建议检查是否设置了$_SERVER数组的某些条目。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1543335|例如：|1543336|if+(isset($_SERVER['REQUEST_METHOD']))+{
++++++++print+"HTTP+request\n";
}+else+{
++++++++print+"CLI+invocation\n";
}|code-block|syntax|javascript|1543337|entityMap|0|LINK|mutability|MUTABLE|url|http://de.php.net/manual/en/reserved.variables.server.php^0|A|8|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

I would suggest to check if some of the entries of the <a href="http://de.php.net/manual/en/reserved.variables.server.php" rel="nofollow noreferrer">$_SERVER</a> array are set.

E.g.:

<pre><code>if (isset($_SERVER['REQUEST_METHOD'])) {
 print "HTTP request\n";
} else {
 print "CLI invocation\n";
}
</code></pre>

blocks|key|1543369|text|php_sapi_name是您想要使用的函数，因为它返回接口类型的小写字符串。此外，还有PHP常量PHP_SAPI。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1543370|文档可以在这里找到：http://php.net/php_sapi_name|1543371|例如，要确定是否正在从CLI运行PHP，可以使用以下函数：|1543372|function+isCommandLineInterface()
{
++++return+(php_sapi_name()+===+'cli');
}|code-block|syntax|javascript|1543373|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/php_sapi_name^0|0|D|1D|8|0|A|S|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@]|D|@$9|12|A|13|1|14]]|E|$]]|$1|H|3|I|5|6|7|15|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|16|8|@]|D|@]|E|$M|N]]|$1|O|3|-4|5|6|7|17|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

<code>php_sapi_name</code> is the function you will want to use as it returns a lowercase string of the interface type. In addition, there is the PHP constant <code>PHP_SAPI</code>. 

Documentation can be found here: <a href="http://php.net/php_sapi_name" rel="noreferrer">http://php.net/php_sapi_name</a>

For example, to determine if PHP is being run from the CLI, you could use this function:

<pre><code>function isCommandLineInterface()
{
 return (php_sapi_name() === 'cli');
}
</code></pre>

blocks|key|1328184|text|根据http://jp2.php.net/manual/en/features.commandline.php的说法，有许多常量只有在从命令行界面运行时才会设置。这些常量是STDIN、STDOUT和STDERR。对其中之一的测试将告诉您它是否处于cli模式。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1328185|entityMap|0|LINK|mutability|MUTABLE|url|http://jp2.php.net/manual/en/features.commandline.php^0|2|1H|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

According to <a href="http://jp2.php.net/manual/en/features.commandline.php" rel="nofollow noreferrer">http://jp2.php.net/manual/en/features.commandline.php</a> There are a number of constants set only when running from the CLI. These constants are STDIN, STDOUT and STDERR. Testing for one of those will tell you if it is in cli mode

blocks|key|1328233|text|我首选的方法是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1328234|if+(array_key_exists('SHELL',+$_ENV))+{
++echo+"Console+invocation";
}
else+{
++echo+"HTTP+invocation";
}|code-block|syntax|javascript|1328235|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|$]]

My preferred method:

<pre><code>if (array_key_exists('SHELL', $_ENV)) {
 echo "Console invocation";
}
else {
 echo "HTTP invocation";
}
</code></pre>

blocks|key|1543563|text|我使用了这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1543564|php_sapi_name()+==+'cli'+%7C%7C+(is_numeric($_SERVER['argc'])+&&+$_SERVER['argc']+>+0)|code-block|syntax|javascript|1543565|这是来自environment.inc的Drush代码库，他们有类似的检查要做。|1543566|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|$]]

I used this:

<pre><code>php_sapi_name() == 'cli' || (is_numeric($_SERVER['argc']) &amp;&amp; $_SERVER['argc'] &gt; 0)
</code></pre>

This is from Drush codebase, environment.inc where they have similar check to make.

blocks|key|1328299|text|//+Detect+CLI+calls
define("IS_CLI_CALL",(+strcmp(php_sapi_name(),'cli')+==+0+));

if(IS_CLI_CALL){
+++//do+you+stuff+here

}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1328300|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>// Detect CLI calls
define("IS_CLI_CALL",( strcmp(php_sapi_name(),'cli') == 0 ));

if(IS_CLI_CALL){
 //do you stuff here

}
</code></pre>

blocks|key|1328350|text|这应该可以处理所有情况(包括php-cgi)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1328351|return+(php_sapi_name()+===+'cli'+OR+defined('STDIN'));|code-block|syntax|javascript|1328352|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|$]]

This should handle all the cases (including php-cgi)

<pre><code>return (php_sapi_name() === 'cli' OR defined('STDIN'));
</code></pre>

blocks|key|1543650|text|joomla路|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1543651|if+(array_key_exists('REQUEST_METHOD',+$_SERVER))+die();|code-block|syntax|javascript|1543652|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|$]]

joomla way

<pre><code>if (array_key_exists('REQUEST_METHOD', $_SERVER)) die();
</code></pre>

blocks|key|1328473|text|我使用这个函数已经有几年了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1328474|function+is_cli()
{
++++if+(+defined('STDIN')+)
++++{
++++++++return+true;
++++}

++++if+(+php_sapi_name()+===+'cli'+)
++++{
++++++++return+true;
++++}

++++if+(+array_key_exists('SHELL',+$_ENV)+)+{
++++++++return+true;
++++}

++++if+(+empty($_SERVER['REMOTE_ADDR'])+and+!isset($_SERVER['HTTP_USER_AGENT'])+and+count($_SERVER['argv'])+>+0)+
++++{
++++++++return+true;
++++}+

++++if+(+!array_key_exists('REQUEST_METHOD',+$_SERVER)+)
++++{
++++++++return+true;
++++}

++++return+false;
}|code-block|syntax|javascript|1328475|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|$]]

I have been using this function for a few years

<pre><code>function is_cli()
{
 if ( defined('STDIN') )
 {
 return true;
 }

 if ( php_sapi_name() === 'cli' )
 {
 return true;
 }

 if ( array_key_exists('SHELL', $_ENV) ) {
 return true;
 }

 if ( empty($_SERVER['REMOTE_ADDR']) and !isset($_SERVER['HTTP_USER_AGENT']) and count($_SERVER['argv']) &gt; 0) 
 {
 return true;
 } 

 if ( !array_key_exists('REQUEST_METHOD', $_SERVER) )
 {
 return true;
 }

 return false;
}
</code></pre>

blocks|key|1543797|text|一种简单的方法是询问$argv变量(对于命令行参数，您可能也会这样做)。即使没有参数，$argv也会返回一个空数组。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1543798|如果设置了它，则使用cli。然后，您可以假设所有其他调用都是通过某个web服务器或其他。|1543799|例如：|1543800|if+(isset($argv))+{
++//+Do+the+cli+thing.
}|code-block|syntax|javascript|1543801|entityMap^0|A|5|17|5|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|W|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|X|8|@]|D|@]|E|$M|N]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

An easy way is to interrogate the <code>$argv</code> variable, (Which you will probably do for command line parameters anyway). Even if there are no parameters <code>$argv</code> returns an empty array.

If it is set, then cli was used. You may then assume all other invocations are via some web server or other.

eg:

<pre><code>if (isset($argv)) {
 // Do the cli thing.
}
</code></pre>

blocks|key|1543855|text|php_sapi_name()确实不是执行此检查的最佳方法，因为它依赖于对许多可能的值进行检查。php-cgi二进制文件可以从命令行、shell脚本或cron作业中调用，并且(在大多数情况下)这些也应该被视为'cli‘，但是php_sapi_name()将为它们返回不同的值(注意，普通版本的PHP不是这样的，但是您希望您的代码在任何地方都可以运行，对吧？)更不用说明年可能会有我们现在不可能知道的使用PHP的新方法。我宁愿不去想它，因为我关心的只是我是否应该用HTML包装我的输出。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1543856|幸运的是，PHP有一种专门检查这一点的方法。只需使用不带任何参数的http_response_code()，如果从web服务器类型的环境运行，则返回TRUE；如果从CLI型环境运行，则返回FALSE。代码如下：|1543857|$is_web=http_response_code()!==FALSE;|code-block|syntax|javascript|1543858|这甚至可以在你不小心(？)在调用此函数之前，从CLI+(或类似于CLI)运行的脚本中设置响应代码。|1543859|entityMap^0|0|F|34|F|0|X|K|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@$9|W|A|X|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|Z|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

<code>php_sapi_name()</code> is really not the best way to perform this check because it depends on checking against many possible values. The php-cgi binary can be called from the command line, from a shell script or as a cron job and (in most cases) these should also be treated as 'cli' but <code>php_sapi_name()</code> will return different values for these (note that this isn't the case with the plain version of PHP but you want your code to work anywhere, right?). Not to mention that next year there may be new ways to use PHP that we can't possibly know now. I'd rather not think about it when all I care about is weather I should wrap my output in HTML or not.

Fortunately, PHP has a way to check for this specifically. Just use <code>http_response_code()</code> without any parameters and it'll return TRUE if ran from a web server type environment and FALSE if ran from a CLI type environment. Here is the code:

<pre><code>$is_web=http_response_code()!==FALSE;
</code></pre>

This will even work if you accidentally(?) set a response code from a script running from the CLI (or something like the CLI) before you call this.

blocks|key|1543864|text|function+is_cli()+{
++++return+!http_response_code();
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1543865|示例：|unstyled|1543866|if+(is_cli())+{
++++echo+'command+line';
}+else+{
++++echo+'browser';
}|1543867|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|L|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|I|3|-4|5|F|7|N|8|@]|9|@]|A|$]]]|J|$]]

<pre><code>function is_cli() {
 return !http_response_code();
}
</code></pre>

example:

<pre><code>if (is_cli()) {
 echo 'command line';
} else {
 echo 'browser';
}
</code></pre>

blocks|key|1543891|text|基于Silver+Moon's+answer+above，我使用此函数返回正确的换行符：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1543892|/**
*+Linebreak+function
*+@return+"/n"+if+cli,+else+return+ 
*/
protected+static+function+lb(){

++++return+(defined('STDIN')+%7C%7C+php_sapi_name()+===+'cli'+%7C%7C+isset($_ENV['SHELL'])+%7C%7C
++++(empty($_SERVER['REMOTE_ADDR'])+&&+!isset($_SERVER['HTTP_USER_AGENT'])+&&+count($_SERVER['argv'])+>+0)+%7C%7C
++++!isset($_SERVER['REQUEST_METHOD']))+?+"\n"+:+" ";

}|code-block|syntax|javascript|1543893|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/933367/php-how-to-best-determine-if-the-current-invocation-is-from-cli-or-web-server/25967493#25967493^0|2|Q|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]]]]

Based off <a href="https://stackoverflow.com/questions/933367/php-how-to-best-determine-if-the-current-invocation-is-from-cli-or-web-server/25967493#25967493">Silver Moon's answer above</a>, I'm using this function for returning correct linebreaks:

<pre><code>/**
* Linebreak function
* @return "/n" if cli, else return &lt;br&gt;
*/
protected static function lb(){

 return (defined('STDIN') || php_sapi_name() === 'cli' || isset($_ENV['SHELL']) ||
 (empty($_SERVER['REMOTE_ADDR']) &amp;&amp; !isset($_SERVER['HTTP_USER_AGENT']) &amp;&amp; count($_SERVER['argv']) &gt; 0) ||
 !isset($_SERVER['REQUEST_METHOD'])) ? "\n" : "&lt;br&gt;";

}
</code></pre>

blocks|key|1543906|text|怎么会有这么多复杂的解决方案。不如..。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1543907|if($_SERVER['REQUEST_SCHEME']=="http"+or+$_SERVER['REQUEST_SCHEME']=="https"){
++++//+must+be+browser+:)
}|code-block|syntax|javascript|1543908|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|$]]

How, so many complicated solutions. How about ...

<pre><code>if($_SERVER['REQUEST_SCHEME']=="http" or $_SERVER['REQUEST_SCHEME']=="https"){
 // must be browser :)
}
</code></pre>

I need to determine whether the current invocation of PHP is from the command line (CLI) or from the web server (in my case, Apache with mod_php).

Any recommended methods?

PHP - how to best determine if the current invocation is from CLI or web server?

服务器

我需要确定当前的PHP调用是从命令行还是从web服务器(在我的例子中是带有mod_php的Apache )。有什么推荐的方法吗？

问PHP -如何最好地确定当前调用是来自CLI还是来自web服务器？
EN

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问PHP -如何最好地确定当前调用是来自CLI还是来自web服务器？
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