Adamhumbug Posted September 4, 2023 Share Posted September 4, 2023 (edited) I have a database field that has a datetime in it of 2023-09-04 18:01:50.000000. When i try and work out how long ago that was - get a negative number. I have tried several "borrowed" functions to work this out and none of them are giving me what i expect. This is what i am using now: function get_time_ago($time_stamp) { $time_difference = strtotime('now') - $time_stamp; if ($time_difference >= 60 * 60 * 24 * 365.242199) { /* * 60 seconds/minute * 60 minutes/hour * 24 hours/day * 365.242199 days/year * This means that the time difference is 1 year or more */ return get_time_ago_string($time_stamp, 60 * 60 * 24 * 365.242199, 'year'); } elseif ($time_difference >= 60 * 60 * 24 * 30.4368499) { /* * 60 seconds/minute * 60 minutes/hour * 24 hours/day * 30.4368499 days/month * This means that the time difference is 1 month or more */ return get_time_ago_string($time_stamp, 60 * 60 * 24 * 30.4368499, 'month'); } elseif ($time_difference >= 60 * 60 * 24 * 7) { /* * 60 seconds/minute * 60 minutes/hour * 24 hours/day * 7 days/week * This means that the time difference is 1 week or more */ return get_time_ago_string($time_stamp, 60 * 60 * 24 * 7, 'week'); } elseif ($time_difference >= 60 * 60 * 24) { /* * 60 seconds/minute * 60 minutes/hour * 24 hours/day * This means that the time difference is 1 day or more */ return get_time_ago_string($time_stamp, 60 * 60 * 24, 'day'); } elseif ($time_difference >= 60 * 60) { /* * 60 seconds/minute * 60 minutes/hour * This means that the time difference is 1 hour or more */ return get_time_ago_string($time_stamp, 60 * 60, 'hour'); } else { /* * 60 seconds/minute * This means that the time difference is a matter of minutes */ return get_time_ago_string($time_stamp, 60, 'minute'); } } function get_time_ago_string($time_stamp, $divisor, $time_unit) { $time_difference = strtotime("now") - $time_stamp; $time_units = floor($time_difference / $divisor); settype($time_units, 'string'); if ($time_units === '0') { return 'less than 1 ' . $time_unit . ' ago'; } elseif ($time_units === '1') { return '1 ' . $time_unit . ' ago'; } else { /* * More than "1" $time_unit. This is the "plural" message. */ // TODO: This pluralizes the time unit, which is done by adding "s" at the end; this will not work for i18n! return $time_units . ' ' . $time_unit . 's ago'; } } when i echo what is being fed to this function i see 2023-09-04 18:01:04 and when strtotime i get 1693850464 the function is using now to work out the current time so i dont understand why it thinks my date is in the future. Edited September 4, 2023 by Adamhumbug Quote Link to comment https://forums.phpfreaks.com/topic/317250-calculating-time-since-is-giving-me-a-negative-closeme/ Share on other sites More sharing options...
Adamhumbug Posted September 4, 2023 Author Share Posted September 4, 2023 Hi, Can this please be closed. I dont know what i have done but it is now working - i cannot really give any more info. Could an admin please close this as it is not a helpful post. Quote Link to comment https://forums.phpfreaks.com/topic/317250-calculating-time-since-is-giving-me-a-negative-closeme/#findComment-1611603 Share on other sites More sharing options...
Barand Posted September 4, 2023 Share Posted September 4, 2023 Suggestions: 1. function timeDifference($datetime) { $periods = ['yrs', 'mths', 'days', 'hrs', 'mins', 'secs']; $dt1 = new DateTime($datetime); $dt2 = new DateTime(); $d = $dt1->diff($dt2); $diffs = array_filter(array_combine($periods, [ $d->y, $d->m, $d->d, $d->h, $d->i, $d->s ] )); $res = $d->invert ? '-' : ''; foreach ($diffs as $k => $v) { $res .= "$v $k "; } return $res; } echo "Now: " . date('Y-m-d H:i:s') . '<br>'; // Now: 2023-09-04 18:54:22 echo timeDifference('2023-09-04 19:00:00.000000'); // -5 mins 37 secs 2. You can also utilise SQL functions SELECT now() as Now , timestampdiff(SECOND, now(), '2023-09-04 19:00:00.000000') as Diff; +---------------------+------+ | Now | Diff | +---------------------+------+ | 2023-09-04 19:03:34 | -214 | +---------------------+------+ SELECT now() as Now , timediff('2023-09-04 19:00:00.000000', now()) as diff; +---------------------+------------------+ | Now | diff | +---------------------+------------------+ | 2023-09-04 19:08:39 | -00:08:39.000000 | +---------------------+------------------+ Quote Link to comment https://forums.phpfreaks.com/topic/317250-calculating-time-since-is-giving-me-a-negative-closeme/#findComment-1611604 Share on other sites More sharing options...
requinix Posted September 5, 2023 Share Posted September 5, 2023 7 hours ago, Adamhumbug said: when i echo what is being fed to this function i see 2023-09-04 18:01:04 You mean $time_stamp is that string value? Well, there's your problem. Also, the code you have there just isn't very good. Barand's solution(s) are simpler and make more sense. 7 hours ago, Adamhumbug said: Could an admin please close this as it is not a helpful post. Might not be helpful to you, but it could be helpful to someone else in the future who has a similar problem. Quote Link to comment https://forums.phpfreaks.com/topic/317250-calculating-time-since-is-giving-me-a-negative-closeme/#findComment-1611608 Share on other sites More sharing options...
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