regexp (php version)

<?php
    $data = "aaaaaaaaaaaaasdffffffffffffffsdfsdfdsfsdfsdfsdfffffffffff 11111 sdfsdfsdfsf aasdfa xxx zzz0bbb-3345sdfsfdsxxxxxxxxxxxxxxxxxxxxxx";
    for( $i = 0; $i < 1000000; $i++ )
    {
        preg_match( "/b+-([0-9]+)/", $data, $matches );
        $t += $matches[ 1 ];
    }
    echo $t."\n";
?>
----------------------
3345000000

real    0m1.632s
user    0m1.623s
sys 0m0.007s