脚本中的mktime错误！ 谁能帮我吗？

I am getting a continues mktime error in my website.

Main mktime code from the functions.php is below:

function mkprettytime($s) {
if ($s < 0)
    $s = 0;

$t = array();
$t["day"] = floor($s / 86400);
$s -= $t["day"] * 86400;

$t["hour"] = floor($s / 3600);
$s -= $t["hour"] * 3600;

$t["min"] = floor($s / 60);
$s -= $t["min"] * 60;

$t["sec"] = $s;

if ($t["day"])
    return $t["day"] . "d " . sprintf("%02d:%02d:%02d", $t["hour"], $t["min"],     $t["sec"]);
if ($t["hour"])
    return sprintf("%d:%02d:%02d", $t["hour"], $t["min"], $t["sec"]);
    return sprintf("%d:%02d", $t["min"], $t["sec"]);
}

function sql_timestamp_to_unix_timestamp($s){
return mktime(substr($s, 11, 2), substr($s, 14, 2), substr($s, 17, 2), substr($s,     5, 2), substr($s, 8, 2), substr($s, 0, 4));
}

And the error is:

[12-Feb-2013 11:06:36] PHP Warning:  mktime() expects parameter 4 to be long, string given in /home/myweb/public_html/bgcode/functions.php on line 543

And the 543 line is (from the above line/script)

return mktime(substr($s, 11, 2), substr($s, 14, 2), substr($s, 17, 2), substr($s, 5, 2), substr($s, 8, 2), substr($s, 0, 4));

Since all the values you are passing are strings, and the fourth one needs to be a number, you need to count to the fourth parameter and make sure that's a number instead. If your substr's are done correctly (I didn't check) it will be a simple matter to convert that value to a number before passing it. First thing to do is double-check that what you pass as parameter 4 is what you think it is. Then read up on intval(): http://php.net/manual/en/function.intval.php

Edit to add: After another minute of pondering, I question that you would ever need a function like that (if you're using MySQL, see UNIX_TIMESTAMP()), and even if you did, strtotime() probably will do the heavy lifting for you.

Actually, I think you're looking for the strtotime function, not mktime:

http://www.php.net/manual/en/function.strtotime.php

Then you can just call strtotime instead of making your own sql_timestamp_to_unix_timestamp function, unless you want it to handle invalid values differently than strtotime does itself.