How can one troubleshoot issues with shell_exec not producing any output or errors in PHP?

If shell_exec is not producing any output or errors in PHP, it could be due to the command not being executed properly or the output being redirected elsewhere. To troubleshoot this, you can try using the passthru() function instead of shell_exec() to see if there is any output. Additionally, make sure that the command being executed is valid and that the necessary permissions are set. 

$output = shell_exec('your_command_here');
if (!$output) {
    $output = passthru('your_command_here');
}
echo $output;

Keywords

shell_exec PHP troubleshooting output errors

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