prettify var_export for php 5.4

gistfile1.txt

$config = preg_replace('#=>\s*array \(#', '=> [', $config);
$config = preg_replace('#\),#', '],', $config);
$config = preg_replace('#,(\s*)\]#', '$1]', $config);
$config = preg_replace('#\d+ => #', '', $config);
$config = preg_replace('#\[\s+\]#', '[]', $config);
$config = str_replace('  ', "\t", $config);