<?php $props = [ ['name' => 'Mathematics', 'time' => '03:01:PM - 04:50:PM'], ['name' => 'History', 'time' => '11:30:AM - 01:30:PM'], ['name' => 'French', 'time' => '01:31:PM - 03:00:PM'], ]; $times = preg_replace( '~^(\d\d):(\d\d):(AM|PM) - .*$~', '\3\1\2', array_column($props, 'time') ); array_multisort($times, $props); print_r($props);
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