PHP CLI script to update Joomla configuration file

update-joomla-config.php

<?php



// 
$joomlaroot    = isset($argv[1]) ? $argv[1] : die("First argument required and it should be absolute-joomla-root-path");
$i=2;
$args = array();
while($i <= $argc){

	if(isset($argv[$i]) && isset($argv[$i+1])){
		$key    = $argv[$i];
		$value  = $argv[$i+1];
		//echo "\n found args [ $key |:::| $value]";
	}else{
		break;
	}
	$args[$key]=$value;
        $i+=2;
}

// for including files require it
define('JPATH_PLATFORM', 1) ;
define('JPATH_BASE', $joomlaroot);

require $joomlaroot.'/configuration.php';
$formatter  = null;
if(file_exists($joomlaroot.'/libraries/joomla/registry/format.php')){
	include_once  $joomlaroot.'/libraries/joomla/registry/format.php';
	include_once  $joomlaroot.'/libraries/joomla/registry/format/php.php';

	// formatter
	$formatter = new JRegistryFormatPHP();

}

if(file_exists($joomlaroot.'/libraries/framework/Joomla/Registry/AbstractRegistryFormat.php')){
	include_once  $joomlaroot.'/libraries/framework/Joomla/Registry/AbstractRegistryFormat.php';
	include_once  $joomlaroot.'/libraries/framework/Joomla/Registry/Format/Php.php';

	// formatter
	$formatter = new Joomla\Registry\Format\Php();

}


//load prev config
$config = new JConfig();

// update new config

foreach($args as $k=>$v){
	if(isset($config->$k)){
		$config->$k = $v;
		echo " Updating [$k |:::| $v]";
	}else{
		echo " ERROR **** Invalid config [$k |:::| $v]";
	}
}

$params = array('class' => 'JConfig', 'closingtag' => false);
$str = $formatter->objectToString($config, $params);
// write new config
file_put_contents($joomlaroot.'/configuration.php', $str);

echo "\n";

Use as
php update-joomla-config.php /path/to/joomla/folder config-name1 config-value1 config-name2 config-value2 ...

Updated for latest joomla version