Calculation of time elapsed in PHP

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Calculation of time elapsed in PHP

2021年1月18日
技術情報

Today I would like to write some code about calculating time elapsed in PHP. Especially if we want to know the elapsed time of inserted records (seconds, minutes, hours , days etc).

For example – Posted 1 週前、3 時間前、50 分間前、30秒間前。

Here is our function to calculate the time eclipse

<?php

function time_elapsed($datetime) {
    $now = new DateTime;
    $ago = new DateTime($datetime);
    //getting the time differences.
    $diff = $now->diff($ago);

    $diff->w = floor($diff->d / 7); //week
    $diff->d -= $diff->w * 7; //day

    //string arrays of formats
    $string = array(
        'y' => '年',
        'm' => '月',
        'w' => '週',
        'd' => '日',
        'h' => '時間',
        'i' => '分',
        's' => '秒',
    );

    //mapping the time difference and format
    foreach ($string as $k => &$v) {
        if ($diff->$k) {
            $v = $diff->$k . ' ' . $v; 
        } else {
            unset($string[$k]);
        }
    }

    //only getting the first array key and value
    $string = array_slice($string, 0, 1);
    return $string ? implode(', ', $string) . '前' : 'ちょうど今';
}

<?php

function time_elapsed($datetime) {

$now = new DateTime;

$ago = new DateTime($datetime);

//getting the time differences.

$diff = $now->diff($ago);

$diff->w = floor($diff->d / 7); //week

$diff->d -= $diff->w * 7; //day

//string arrays of formats

$string = array(

'y' => '年',

'm' => '月',

'w' => '週',

'd' => '日',

'h' => '時間',

'i' => '分',

's' => '秒',

);

//mapping the time difference and format

foreach ($string as $k => &$v) {

if ($diff->$k) {

$v = $diff->$k . ' ' . $v;

} else {

unset($string[$k]);

}

//only getting the first array key and value

$string = array_slice($string, 0, 1);

return $string ? implode(', ', $string) . '前' : 'ちょうど今';

}

I have included the comments in code so that you can be able to understand it. Let’s call our function to test.

echo time_elapsed("2020-12-06 11:24:25"); //output 1 月前
echo time_elapsed(date("Y-m-d H:i:s")); //output ちょうど今

1 2	echo time_elapsed("2020-12-06 11:24:25"); //output 1 月前 echo time_elapsed(date("Y-m-d H:i:s")); //output ちょうど今

PS. we have to care about our server timezone when we are dealing with Datetime functions

By Yuuma

yuuma at 2021年01月18日 04:56:29

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