- strtotime: documentation ( source)
<?php
function time_diff($s) {
$m = 0; $hr = 0; $d = 0; $td = "now";
if ($s > 59) {
$m = (int)($s/60);
$s = $s-($m*60); // sec left over
$td = "$m min";
}
if ($m > 59) {
$hr = (int)($m / 60);
$m = $m - ($hr*60); // min left over
$td = "$hr hr";
if ($hr > 1) {
$td .= "s";
}
if ($m > 0) {
$td .= ", $m min";
}
}
if ($hr > 23) {
$d = (int) ($hr / 24);
$hr = $hr-($d*24); // hr left over
$td = "$d day";
if ($d > 1) {
$td .= "s";
}
if ($d < 3) {
if ($hr > 0) {
$td .= ", $hr hr";
}
if ($hr > 1) {
$td .= "s";
}
}
}
return $td;
}
$diffInSecs = strtotime('14:00') - strtotime('9:00');
$hours = $diffInSecs / 3600;
echo $hours;
echo "<br>";
echo time_diff($diffInSecs);