blocks|key|2708775|text|我认为exec和这类功能在你的php.ini中是被禁用的。你可以通过以下方式查看|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2708776|if(function_exists('exec'))+{
++++echo+"exec+is+enabled";
}+else+{
++++echo+"exec+is+disabled";
}|code-block|syntax|javascript|2708777|打开您的php.ini并导航到disable_functions部分|2708778|如果此处列出了exec，请将其删除。|2708779|然后重新启动php-fpm。|offset|length|style|CODE|2708780|此外，如果启用了安全模式，则此功能将不可用。您需要禁用它。|2708781|编辑|BOLD|2708782|对ping使用完整路径。您可以通过在shell+which+ping中发出以下命令来找到它|2708783|2708784|<?php
exec('/sbin/ping+-c3+google.com',+$output);
print_r($output);
?>|2708785|entityMap^0|0|0|0|0|6|7|0|0|0|2|0|O|A|0|0|2|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|14|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|15|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|16|8|@$M|17|N|18|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|6|7|19|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1A|8|@$M|1B|N|1C|O|U]]|9|@]|A|$]]|$1|V|3|W|5|6|7|1D|8|@$M|1E|N|1F|O|P]]|9|@]|A|$]]|$1|X|3|T|5|6|7|1G|8|@$M|1H|N|1I|O|U]]|9|@]|A|$]]|$1|Y|3|Z|5|D|7|1J|8|@]|9|@]|A|$E|F]]|$1|10|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]]|11|$]]

I think exec and those kind of functions are disabled in your php.ini . You can check it by

<pre><code>if(function_exists('exec')) {
 echo "exec is enabled";
} else {
 echo "exec is disabled";
}
</code></pre>

Open your php.ini and navigate to section disable_functions

If exec is listed under there , remove it.

Then restart <code>php-fpm</code>.

Also If Safe Mode is enabled this function will not be available. You need to disable it.

Edit

use full path for ping. You can find it by issuing this command in shell <code>which ping</code>

Edit

<pre><code>&lt;?php
exec('/sbin/ping -c3 google.com', $output);
print_r($output);
?&gt;
</code></pre>

blocks|key|137068|text|Php-fpm在OpenBSD上默认是chrooted。这可能是你看到它在cli上工作而不是在web上工作的原因。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|137069|你有两个解决方案。禁用chroot+(注释/etc/php-fpm.conf上的chroot+=+/var/www行)或修复可能遇到的问题。|offset|length|style|CODE|137070|ping的静态编译版本驻留在/bin/ping下(从chroot内部)。您需要在chroot中复制/etc/hosts和/etc/resolv.conf，以便解析主机名称(就像您试图对google执行trying操作一样)。您计划调用的所有其他系统命令也必须复制到chroot中(以及它们的共享库或静态编译)。|137071|使用ldd(1)找出您需要哪些库。根据你试图实现的目标，这可能是一项乏味的工作。|137072|正如其他用户指出的那样，Exec、system和shell_exec可能已禁用。|137073|entityMap^0|0|L|H|14|H|0|E|9|1D|A|1O|G|0|2|6|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@$D|R|E|S|F|G]|$D|T|E|U|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|V|8|@$D|W|E|X|F|G]|$D|Y|E|Z|F|G]|$D|10|E|11|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|12|8|@$D|13|E|14|F|G]]|9|@]|A|$]]|$1|L|3|M|5|6|7|15|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|O|$]]

Php-fpm is chrooted by default on OpenBSD. That's probably the cause you see it working on cli and not on web.

You've two solutions. Disable chroot (comment the line <code>chroot = /var/www</code> on <code>/etc/php-fpm.conf</code>) or fix the issues you may encounter.

A static compiled version of ping resides under <code>/bin/ping</code> (from inside the chroot). You'll need to copy <code>/etc/hosts</code> and <code>/etc/resolv.conf</code> inside the chroot in order to resolv hosts names (as you're trying to do pinging google).
All other system commands you plan to call must be copied inside the chroot also (along with their shared libraries or compiled statically).

Use <code>ldd(1)</code> to find out which libraries you'll need.
Depending on what you're trying to achieve it could be a tedious work.

Exec, system and shell_exec are probably disabled, as other users pointed out.

blocks|key|138278|text|<?php
//echo+"Вот-вот...+ещё+1+мин";
//echo+"Wait...+1+min";
echo+exec('/bin/bash+--login+-c+"cd+/var/www/194.7.2.2/public+&&+/usr/local/rvm/rubies/ruby-2.5.3/bin/ruby+work1.rb+"'.$_GET['some_value']);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|138279|成功了4me！|unstyled|138280|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre class="lang-php prettyprint-override"><code>
&lt;?php
//echo "Вот-вот... ещё 1 мин";
//echo "Wait... 1 min";
echo exec('/bin/bash --login -c "cd /var/www/194.7.2.2/public &amp;&amp; /usr/local/rvm/rubies/ruby-2.5.3/bin/ruby work1.rb "'.$_GET['some_value']);
</code></pre>

It`s worked 4me!

<code>php-fpm</code>, <code>nginx</code> exec when in use <code>.phpfiles()</code> <code>shell_exec()</code> <code>system()</code> works fine from the command line.

Example when works well:

<pre><code>#php myphp.php
</code></pre>

<code>myphp.php</code> contains:

<pre><code>&lt;?php
exec('ping -c 3 google.com', $output);
print_r($output);
?&gt;
</code></pre>

But if I put on my browser <code>http://localhost/myphp.php</code>, it does not work anymore.

Any ideas?
I edit

I made a file with the following contents:

<pre><code>#cat info.php

&lt;?php
if(function_exists('exec')) {
 echo "exec is enabled";
}
 phpinfo();
?&gt;
</code></pre>

In my browser, print 

<blockquote>
 exec is enabled, y php info..
</blockquote>

I made a file with the following contents:

<pre><code>#cat info.php

&lt;?php 
// Check for safe mode
if( ini_get('safe_mode') ){
 // Do it the safe mode way
echo "Do it the safe mode way";
}else{
 // Do it the regular way
echo "Do it the regular way";
}

?&gt;
</code></pre>

In my browser, print

<blockquote>
 Do it the regular way
</blockquote>

Did not I like to know if I'm in a jail?

In my php ini 

<pre><code>#cat /etc/php-5.5.ini
</code></pre>

safe_mode not shown, or ON or OFF.
simply does not exist

php-fpm does not work exec, system, shell_exec, only CLI

OpenBSD

php-fpm、nginx exec在使用.phpfiles() shell_exec() system()时，从命令行运行正常。工作正常时的示例：#php myphp.phpmyphp.php包含：<?phpexec('ping -c 3 google.com', $output);print_r($output);...

问php-fpm不适用于exec、system、shell_exec，仅适用于CLI
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问php-fpm不适用于exec、system、shell_exec，仅适用于CLI
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