makeconfig.php

<?php
// Args: 0 => makedb.php, 1 => "$MAUTIC_DB_HOST", 2 => "$MAUTIC_DB_USER", 3 => "$MAUTIC_DB_PASSWORD", 4 => "$MAUTIC_DB_NAME"
$stderr = fopen('php://stderr', 'w');

fwrite($stderr, "\nWriting initial Mautic config\n");

// Figure out if we have a port in the database host string
if (strpos($argv[1], ':') !== false)
{
	list($host, $port) = explode(':', $argv[1], 2);
}
else
{
	$host = $argv[1];
	$port = 3306;
}

$parameters = array(
	'db_driver'      => 'pdo_mysql',
	'db_host'        => $host,
	'db_port'        => $port,
	'db_name'        => $argv[4],
	'db_user'        => $argv[2],
	'db_password'    => $argv[3],
	'install_source' => 'Docker'
);

$path     = '/var/www/html/app/config/local.php';
$rendered = render($parameters);

$status = file_put_contents($path, $rendered);

if ($status === false) {
	fwrite($stderr, "\nCould not write configuration file to $path, you can create this file with the following contents:\n\n$rendered\n");
}

/**
 * Renders parameters as a string.
 *
 * @param array $parameters
 *
 * @return string
 */
function render(array $parameters)
{
	$string = "<?php\n";
	$string .= "\$parameters = array(\n";

	foreach ($parameters as $key => $value)
	{
		if ($value !== '')
		{
			if (is_string($value))
			{
				$value = "'" . addslashes($value) . "'";
			}
			elseif (is_bool($value))
			{
				$value = ($value) ? 'true' : 'false';
			}
			elseif (is_null($value))
			{
				$value = 'null';
			}
			elseif (is_array($value))
			{
				$value = renderArray($value);
			}

			$string .= "\t'$key' => $value,\n";
		}
	}

	$string .= ");\n";

	return $string;
}

/**
 * Renders an array of parameters as a string.
 *
 * @param array $array
 * @param bool  $addClosingComma
 *
 * @return string
 */
function renderArray(array $array, $addClosingComma = false)
{
	$string = "array(";
	$first  = true;

	foreach ($array as $key => $value)
	{
		if (!$first)
		{
			$string .= ',';
		}

		if (is_string($key))
		{
			$string .= '"' . $key . '" => ';
		}

		if (is_array($value))
		{
			$string .= $this->renderArray($value, true);
		}
		else
		{
			$string .= '"' . addslashes($value) . '"';
		}

		$first = false;
	}

	$string .= ")";

	if ($addClosingComma)
	{
		$string .= ',';
	}

	return $string;
}