为时间戳添加天，小时和分钟 - PHP

Question

I am having difficulty adding days, hours, and minutes through strtotime().

Code:

$uncleanTotal = strtotime($created_time);
$uncleanTotal = strtotime("+".$timeForUnclean[0] . " days ". $timeForUnclean[1] ." hours ". $timeForUnclean[2] ." minutes");

To be more exact I am trying to get a time from before and add days, hours, and minutes to see if that time it creates is greater than the current time (now) or lesser than. I am than using an if statement to check this.

Code:

if($cautionTotal <= $now)
{
    echo "working caution";
    return "yellow";

}
else if( $uncleanTotal <= $now)
{
    echo  "working unclean";
    return "red";
}
else if($cautionTotal > $now && $uncleanTotal > $now)
{
    echo  "working clean";
    return "green";
}

Suggestions? Thoughts?

Answer 1

You're missing the source date in the statement where you're doing the addition:

Try:

$uncleanTotal = strtotime($created_time . "+".$timeForUnclean[0] . " days ". $timeForUnclean[1] ." hours ". $timeForUnclean[2] ." minutes");

Alternatively you can pass strtotime($created_time) as the second parameter to strtotime to get the same result as above:

$uncleanTotal = strtotime("+".$timeForUnclean[0] . " days ". $timeForUnclean[1] ." hours ". $timeForUnclean[2] ." minutes", strtotime($created_time));