ORDER BY 2 DESC
2 - это номер колонки в селекте? 'text1/ text2/ text3 / http://text4/ text5'.split('/ ');
[
0:"text1"
1:"text2"
2:"text3 "
3:"http://text4"
4:"text5"
]
[0 => "text1" 1 => " text2", 2 => " text3", 3 => "http:", 4 => "", 5 => "text4", 6 => " text5"]