This is a small Minecraft tool written in PHP to fix missing end or nether dimension compound tags in the level.dat file. If the tags are missing, the portals do not work.
composer require aternos/creabitphp repair.php input_file [output_file]If no output file path is given, the output directory is the current directory.
$fileName = 'level.dat'
$fileContent = file_get_contents($filename)
$creabit = new Creabit($fileContent)
file_put_contents($fileName, $creabit->repair());