Symfony\Installer\Manager\ComposerManager::syncComposerLockFile PHP Метод

    private function syncComposerLockFile()
    {
        $composerJsonFileContents = file_get_contents($this->projectDir . '/composer.json');
        $composerLockFileContents = json_decode(file_get_contents($this->projectDir . '/composer.lock'), true);
        if (array_key_exists('hash', $composerLockFileContents)) {
            $composerLockFileContents['hash'] = md5($composerJsonFileContents);
        }
        if (array_key_exists('content-hash', $composerLockFileContents)) {
            $composerLockFileContents['content-hash'] = $this->getComposerContentHash($composerJsonFileContents);
        }
        $this->fs->dumpFile($this->projectDir . '/composer.lock', json_encode($composerLockFileContents, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n");
    }