php - Date and time difference display 30min as 5 -


i have tried compare 2 dates , time using php code 

<?php $a = "2013-01-10 10:30:00";     $b = "2013-01-10 12:00:00";     echo str_replace('-','',(strtotime($a) - strtotime($b))/(60*60));     ?>

code working fine display 30 min 5 not able checks db values idea fix 1

strtotime() alone can calculate difference. there no need use str_replace(). try - 

echo (strtotime($b) - strtotime($a))/60;

will return difference in minutes ie. 90. if want 1.30 have basic calculations. - 

$mins = (strtotime($b) - strtotime($a))/60; if ($mins > 60) {     echo ((int)($mins/60)).'.'.($mins%60); } else {     echo $mins; }

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