PHP Exec无法启动应用程序 [英] PHP Exec Does not Launch Application

问题描述

我正在尝试通过Web界面运行应用程序-更具体地说是Source Dedicated Server.我正在使用以下代码进行此操作:

I'm attempting to run an application - more specifically a Source Dedicated Server - through a web-interface. I am doing this using the following code:

$old_path = getcwd();
chdir("[PATH]");
$tmp = exec("srcds -console -game tf +map ctf_2fort");
chdir($old_path);

不幸的是，该网站挂起，并且从未加载.通过命令提示符运行相同的命令非常有效，运行exec("echo %cd%")输出正确的路径，我可以运行文件夹中的其他内容(例如仅回显%time%的示例.bat)，依此类推.

Unfortunately, the site hangs, and is never loaded. Running the same exact command through the command prompt works perfectly, running exec("echo %cd%") outputs the correct path, I can run other things (such as a sample .bat that simply echoes %time%) from the folder, so on and so forth.

我已经能够通过将stdout重定向到/dev/null/(用以下内容替换$tmp =行)来加载网站:

I have been able to make the site load by redirecting stdout to /dev/null/ (replacing the $tmp = line with the following:)

$tmp = exec("srcds -console -game tf +map ctf_2fort > /dev/null");

尽管这允许网站加载，但应用程序永远不会运行(并且该过程不会出现在任务管理器中).

While this allows the site to load, the application is never run (and the process doesn't appear in the task manager).

我尝试输出到文件，但这仅输出两行，第一行显示Using breakpad minidump system，第二行为空.它还不会启动该应用程序.

I've tried outputting to a file, but this simply outputs two lines, the first one saying Using breakpad minidump system, the second one empty. It also doesn't launch the application.

$tmp = exec("srcds -console -game tf +map ctf_2fort > tmp.txt");

我对应该做的事不知所措-我对PHP还是很陌生，因此，如果有任何明显的我想念的地方，请这么做.

I'm at loss as to what I should do - I'm fairly new to PHP, so if there's anything obvious I'm missing, please do say so.

推荐答案

尝试将2>&1添加到命令中.您还可以指定是否要将碰巧显示的输出的每一行显示为数组，如下所示:

Try adding 2>&1 to the command. You can also specify if you want each line of the output from what happened to be displayed as an array, like so:

$tmp = exec("srcds -console -game tf +map ctf_2fort 2>&1", $what_happened);
print_r($what_happened);

如果启用了安全模式，则可能会遇到一些问题...如果上述建议对您不起作用，您还可以查看

If safe mode is on, you might run into some problems though... If the above suggestion doesn't work for you, you might also check out the system() and/or passthru() commands.

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