Substrayendo valores substr

cadena







<?

$result="0411 2 Up Dial SIP/callcentric/411,,Tt 0154 00:00:24 5061874a-712b-44a9-9 ";

echo substr("$result",-60); //00:00:24 5061874a-712b-44a9-9

echo "<br><br>";

echo substr(substr("$result",-60),0,30);  //00:00:24

?>