0UT1S's

// Set COMPOSER_HOME to a local directory (e.g., .composer_home in /compressor/)
$composerHome = __DIR__ . '/.composer_home';
if (!is_dir($composerHome)) {
    mkdir($composerHome, 0755, true);
}
putenv("COMPOSER_HOME={$composerHome}");

// Check if Composer is installed
$composerPath = __DIR__ . '/composer.phar';
if (!file_exists($composerPath)) {
    echo "Downloading Composer...\n";
    $response = @file_get_contents('https://getcomposer.org/installer');
    if ($response === false) {
        die("Failed to download Composer installer. Check server network permissions.\n");
    }
    file_put_contents($composerPath, $response);
    chmod($composerPath, 0755);
}

// Install dependencies in the current directory (/compressor/)
echo "Installing dependencies...\n";
chdir(__DIR__); // Set working directory to /compressor/
exec("php {$composerPath} require zetbaitsu/compressor --no-progress --optimize-autoloader --no-suggest", $output, $returnVar);

// Display detailed error output
if ($returnVar !== 0) {
    die("Installation failed. Composer output:\n" . implode("\n", $output));
}

echo "Installation successful!\n";
echo "Autoloader path: " . __DIR__ . "/vendor/autoload.php\n";
?>