<?php
$data1 = '2021-02-23 00:00:00';
$nHoras = ($unix_data2 - $unix_data1) / (60 * 60);
$nMinutos = (($unix_data2 - $unix_data1) % (60 * 60)) / 60;
// printf('%02d:%02d', $nHoras, $nMinutos);
$resultado = sprintf('%02d:%02d', $nHoras, $nMinutos); echo "Hora: {$resultado}"
?>
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