日期和时间差异在PHP中无法正常工作

Question

here i want to do employee login time calculation,like

1. My office login time is 2018-02-01 09:30 AM
2. But my logged in time 2018-02-01 09:40 AM

based on above two dates i came to office 10 Mins late.

suppose my logged in time 2018-02-01 10:40 AM (1 Hr and 20 mins late)

My expected results (Mins late means)

10 Mins late

My expected results (Hrs late means)

1 Hrs late

I tried like this but it is not working properly

    date_default_timezone_set('UTC');
$officeTiming ="2018-02-01 09:30 AM";
$todaymyloginTime ="2018-02-01 09:40 AM";
$datetime1 = date_create($officeTiming);
$datetime2 = date_create($todaymyloginTime);
$interval = date_diff($datetime1, $datetime2);
$suffix = ' Late'; 
    if ($datetime1 > $datetime2) $suffix = ' Before';
    $time_diff= $interval->format('%h:%i:%s'); 
    $start_date = new DateTime($time_diff);
    $since_start = $start_date->diff(new DateTime(date("h:i:s")));
    if(intval($since_start->format('%h')) >= 1){
         $timeago = $since_start->format('%h hours'.$suffix);    
    }
    else if(intval($since_start->format('%i')) >= 1){
         $timeago = $since_start->format('%i minutes'.$suffix);  
    }
    else if(intval($since_start->format('%s')) >= 1){
         $timeago = $since_start->format('%s seconds'.$suffix); 
    }
    echo $timeago; 

I am getting answer is 4 hours Late but actually i am 20 mins late

My working code

$datetime1 = new DateTime('2018-02-01 09:30 AM');
 $datetime2 = new DateTime('2018-02-01 09:20 AM');
 $interval = $datetime1->diff($datetime2);
 $suffix = ' Late'; 
if ($datetime1 > $datetime2) $suffix = ' Before';

 if($interval->format('%h') ==0){
     echo $interval->format('%i')." Minutes".$suffix;
 }else{
    echo $interval->format('%h')." Hours".$suffix; 
  }

Answer 1

May be You are looking for this kind of stuff:-

<?php
$datetime1 = new DateTime('2018-02-01 09:30:31 AM');
$datetime2 = new DateTime('2018-02-01 09:40:32 AM');
$interval = $datetime1->diff($datetime2);
if($interval->format('%h') ==0){
    echo $interval->format('%i')." Minutes".$interval->format('%s')." Seconds Late";
}else{
    echo $interval->format('%h')." Hours ".$interval->format('%i')." Minutes ".$interval->format('%s')." Seconds Late"; 
}
?>

Output:-

10 Minutes 1 Seconds Late

Hope it helps!