datatable.directory/app/Tables/PhpExporter.php

<?php


namespace App\Tables;


class PhpExporter extends BaseExporter
{
    /**
     * @return string - mime type for the downloaded file
     */
    protected function getMimeType()
    {
        return $this->wantDownload ? 'application/x-php' : 'text/plain';
    }

    /**
     * @return string - file extension for the downloaded file
     */
    protected function getFileExtension()
    {
        return 'php';
    }

    /**
     * Write the document to stdout ('php://output')
     */
    protected function writeDocument()
    {
        echo "<?php\n\n";

        echo "/*\n" . $this->getHeaderComment(' ') . "*/\n\n";

        echo "return [\n";

        $first = true;
        foreach ($this->iterateRows() as $row) {
            if ($first) {
                $first = false;
            } else {
                echo ",\n";
            }

            echo '    [';

            $firstf = true;
            foreach ($this->columns as $column) {
                if ($firstf) {
                    $firstf = false;
                } else {
                    echo ", ";
                }

                var_export($column->name);
                echo ' => ';
                var_export($row[$column->name]);
            }

            echo ']';
        }

        echo "\n];\n";
    }
}