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<?php $time[1] = "2017-08-28 18:30:00"; $time[2] = "2017-08-28 14:00:00"; $time[3] = "2017-08-28 13:00:00"; $time[4] = "2017-08-28 12:45:00"; $time[5] = "2017-08-28 12:30:00"; $time[6] = "2017-08-28 12:00:00"; for ($i = 1; $i <= count($time) - 1; $i++) { $hourdiff = round((strtotime($time[$i + 1]) - strtotime($time[$i]))/3600, 1); echo "The difference is: $hourdiff" . PHP_EOL; }
Output for git.master, git.master_jit, rfc.property-hooks
The difference is: -4.5 The difference is: -1 The difference is: -0.3 The difference is: -0.3 The difference is: -0.5

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