QQ space timeline PHP implements timeline function code

This article will introduce how to implement time conversion based on the timeline.
First we need to understand several functions of time:
time(): Returns the current Unix timestamp
date(): Format a local time/date.
Application example:

Copy code The code is as follows:

date("Y-m-d H:i:s",time()); //Format the current time, output: 2011-9-24 07: 27:35

strtotime(): Parse any English text datetime description into a Unix timestamp.
Application example:

Copy the code The code is as follows:

echo strtotime("+1 day"), "n"; //Output the timestamp 1 day ago: 1316932222

date_default_timezone_set(): Set the default time zone to use.
Generally we set Beijing time: date_default_timezone_set("PRC");
After understanding the above functions, we write the timeline function:
The principle of this function is to compare the current time of the system with the target time, get a difference, and then The difference is compared with the time range (converted into seconds), and different results are output according to the range of the time axis (for example: 5 minutes ago). For ease of calculation, we convert the times into Unix timestamps.

Copy the code The code is as follows:

function tranTime($time) {
$rtime = date("m-d H:i",$time);
$htime = date("H:i", $time);
$time = time() - $time;
if ($time < 60) {
$str = 'just';
}
elseif ($time < 60 * 60) {
$min = floor($time/60);
$str = $min.'minutes ago';
}
elseif ($time < 60 * 60 * 24) {
$h = floor($time/(60*60 ));
$str = $h.'hour ago'.$htime;
}
elseif ($time < 60 * 60 * 24 * 3) {
$d = floor($time/(60*60* 24));
if($d==1)
$str = 'yesterday'.$rtime;
else
$str = 'the day before yesterday'.$rtime;
}
else {
$str = $rtime;
}
return $str;
}

The parameter $time in function tranTime() must be a Unix timestamp. If not, please use strtotime() to convert it to a Unix timestamp first. The above code is easy to understand at a glance, so there is no need to elaborate further.
Call the function and output directly:

Copy the code The code is as follows:

$times="1316932222";
echo tranTime($times);

The above introduces the qq space time axis PHP implementation of the timeline function code, including the content of the qq space time axis. I hope it will be helpful to friends who are interested in PHP tutorials.