Write files safely to avoid race conditions when the same file is written multiple times in a short time period.

Using composer:

composer require webimpress/safe-writer

use Webimpress\SafeWriter\FileWriter;

$targetFile = __DIR__ . '/target-file.php';
$content = "<?php\nreturn " . var_export($data, true) . ';';

FileWriter::writeFile($targetFile, $content);

If something goes wrong exception (instance of Webimpress\SafeWriter\Exception\ExceptionInterface) will be thrown.