php - Extracting a string between an "id_" and a ".html" -

i want extract id youku video:

http://v.youku.com/v_show/id_xntu2nzqynzq0.html?f=19275195&ev=3

the id random letter between id_ , .html

how accomplish that?

use this

$input = 'http://v.youku.com/v_show/id_xntu2nzqynzq0.html?f=19275195&ev=3'; preg_match('~id_(.*?).html~', $input, $output); echo $output[1]; 

output

xntu2nzqynzq0 

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