If you only need the fields, here is a quick and dirty one liner:
$link = 'magnet:?xt=urn:btih:0eb69459a28b08400c5f05bad3e63235b9853021&dn=Splinter.Cell.Blacklist-RELOADED&tr=udp%3A%2F%2Ftracker.com%3A80&tr=udp%3A%2F%2Ftracker.publicbt.com%3A80&tr=udp%3A%2F%2Ftracker.istole.it%3A6969&tr=udp%3A%2F%2Ftracker.ccc.de%3A80&tr=udp%3A%2F%2Fopen.demonii.com%3A1337';
parse_str(str_replace('tr=','tr[]=',parse_url($link,PHP_URL_QUERY)),$query);
print_r($query);
Should yield:
Array
(
[xt] => urn:btih:0eb69459a28b08400c5f05bad3e63235b9853021
[dn] => Splinter.Cell.Blacklist-RELOADED
[tr] => Array
(
[0] => udp://tracker.com:80
[1] => udp://tracker.publicbt.com:80
[2] => udp://tracker.istole.it:6969
[3] => udp://tracker.ccc.de:80
[4] => udp://open.demonii.com:1337
)
)
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…