PHP执行带参数外部程序无响应：exec调用失败排查求助

Return code 1 from exec() almost always indicates that the underlying command failed to run properly. Let's walk through the most likely issues and fixes:

1. Quote Paths with Spaces (Critical!) #

The path to infekt-cmd.exe includes spaces (C:\Program Files\iNFekt\infekt\infekt-cmd.exe), which the Windows shell will split into separate arguments if not wrapped in quotes. The same goes for your $nfoFile path if it has spaces.

Update your command to wrap both paths in escaped double quotes:

$exePath = 'C:\\Program Files\\iNFekt\\infekt\\infekt-cmd.exe';
$nfoFile = 'C:\\path\\to\\your\\file.nfo'; // Replace with your actual path

// Wrap executable and file paths in quotes to handle spaces
$command = "\"$exePath\" -S --utf-16 \"$nfoFile\"";
exec($command, $output, $return_var);

2. Capture Error Messages (See What's Actually Wrong) #

By default, exec() only captures standard output (stdout). Any error messages from infekt-cmd.exe go to standard error (stderr), which is why your $output array is empty. Redirect stderr to stdout to see the issue:

$command = "\"$exePath\" -S --utf-16 \"$nfoFile\" 2>&1";
exec($command, $output, $return_var);

// Print the output to debug
print_r($output);

This will show you specific errors like "file not found" or invalid argument syntax.

3. Validate File and Executable Paths #

• Check the executable path: Double-check that infekt-cmd.exe exists at the specified location. Even Windows can be picky about case in some environments, so confirm the folder names match exactly (e.g., iNFekt vs infekt).
• Use absolute paths for the NFO file: If $nfoFile is a relative path, PHP's working directory might not be what you expect. Use realpath() to verify the file exists and get its absolute path:

  $nfoFile = realpath($nfoFile);
  if (!$nfoFile) {
      die("Error: NFO file not found at specified path!");
  }
  

4. Verify Permissions #

• Ensure the user running PHP (e.g., IIS_IUSRS for IIS, www-data for Apache) has:
  • Execute permission on infekt-cmd.exe
  • Read permission on your NFO file
• Check your php.ini file to make sure exec isn't listed in disable_functions (this blocks PHP from running external commands).

5. Test the Command Manually First #

Open Windows Command Prompt (CMD) and run the exact command you're trying to execute in PHP. For example:

"C:\Program Files\iNFekt\infekt\infekt-cmd.exe" -S --utf-16 "C:\full\path\to\your\file.nfo"

If this fails in CMD, fix the command there first—this eliminates PHP as the source of the problem.

内容的提问来源于stack exchange，提问作者Snake Eyes