JSON API for total network hashrate?

[Hawkix]

Is there an JSON web API somewhere I can get current total network hashrate (like it is shown on bitcoinwatch.com or bitcoincharts.com)?

Optionally, also with the current blockspeed and block number?

[eturnerx]

Not JSON, but easily usable.... http://blockexplorer.com/q

[Hawkix]

How to get total network hashrate from these?

[Hawkix]

I found it (when assuming 1-day average):

Code:

$interval = file_get_contents("http://blockexplorer.com/q/interval/144");
$winning  = file_get_contents("http://blockexplorer.com/q/hashestowin");
print $winning/$interval;