cakephp / phinx

        if ($this->migrations === null) {

            $phpFiles = $this->getMigrationFiles();

            if (OutputInterface::VERBOSITY_VERBOSE <= $this->getOutput()->getVerbosity()) {

                $this->getOutput()->writeln("Migration file " . implode(", ", $phpFiles));

            }

            // filter the files to only get the ones that match our naming scheme

            $fileNames = [];

            foreach ($phpFiles as $filePath) {

                if (Util::isValidMigrationFileName(basename($filePath))) {

                    if (OutputInterface::VERBOSITY_VERBOSE <= $this->getOutput()->getVerbosity()) {

                        $this->getOutput()->writeln("Valid migration file " . implode(", ", $phpFiles));

                    }

                    $version = Util::getVersionFromFileName(basename($filePath));

                    }

                    $versions[$version] = $migration;

                } else {

                    if (OutputInterface::VERBOSITY_VERBOSE <= $this->getOutput()->getVerbosity()) {

                        $this->getOutput()->writeln("Invalid migration file " . implode(", ", $phpFiles));

                    }

                }

            }

            ksort($versions);