php中strtotime函数用法详解

<?php
//function
function nextWeeksDay($date_begin,$nbrweek)
{
$nextweek=array();
for($i = 1; $i <= $nbrweek; $i++)  { // 52 week in one year of course.phpfensi.
$nextweek[$i]=date('D d M Y', strtotime('+'.$i.' week',$date_begin));
}
return $nextweek;
}
/// end function 
/// example of a select date 
// var
$date_begin = strtotime('06-05-2010'); //D Day Month Year  - like function format.
$nbrweek=52;
// call function
$result=nextWeeksDay($date_begin,$nbrweek);
// Preview 
for($i = 1; $i <= $nbrweek; $i++)  {
echo '<br> - '.$result[$i];
}
?>
 
<?php
$str = 'Not Good';
 
// previous to PHP 5.1.0 you would pare with -1, instead of false
if (($timestamp = strtotime($str)) === false) {
    echo "The string ($str) is bogus";
} else {
    echo "$str == " . date('l dS o F Y h:i:s A', $timestamp);
}
?> 
<?php
echo strtotime("now"), " ";
echo strtotime("10 September 2000"), " ";
echo strtotime("+1 day"), " ";
echo strtotime("+1 week"), " ";
echo strtotime("+1 week 2 days 4 hours 2 seconds"), " ";
echo strtotime("next Thursday"), " ";
echo strtotime("last Monday"), " ";
?>

function get_working_days($to_date) {
    $holidays = array(
        1 => array(10), //2011 ...
        2 => array(11),
        3 => array(21), //... 2011
        4 => array(29,30), //2010 ...
        5 => array(3,4,5),
        6 => array(),
        7 => array(19),
        8 => array(11,12,13),
        9 => array(20,23),
       10 => array(11),
       11 => array(3,23),
       12 => array(23) //... 2010
    );
 
    for($to_date, $w = 0, $i = 0, $x = time(); $x < $to_date; $i++, $x = strtotime("+$i day")) {
       if(date("N",$x) < 6 &! in_array(date("j",$x),$holidays[date("n",$x)])) $w++;
    }
    return $w;
}
 
//Usage:
echo get_working_days(strtotime("2011-01-08"));