PHP implementation of timeline function code_PHP tutorial-PHP Tutorial-php.cn

PHP implementation of timeline function code_PHP tutorial

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Release： 2016-07-21 15:24:05

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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 the date and time description of any English text into a Unix timestamp.
Application example:

Copy 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 be used.
Generally we set Beijing time: date_default_timezone_set("PRC");
After understanding the above functions, we can write the timeline function:
The principle of this function is to compare the current system time with the target time, and get A difference value, and then compare the difference value with the time range (converted into seconds), and output different results 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 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 = $h.'hours ago'.$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 Unix time Stamp, 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); 