I\'m working on a PHP function which calculates holidays:
function holidays($country = 1, $timespan_start = 0, $timespan_end = 0)
The holid
Looks like you are just missing an "of":
echo date('Y-m-d', strtotime('first monday of february 2010'));
will give the expected result. See the PHP Manual on Relative dates for the various input formats.