PHP timeout function to verify whether the user is logged in_PHP tutorial

Through the action time, if the action time times out, it will be kicked out! Using mktime is a good time calculation function
that can easily calculate the time difference. The smallest unit is seconds.

Function

function user_mktime($onlinetime){
$new_time = mktime();
echo $new_time-$onlinetime;
if($new_time-$onlinetime > 100){
echo "Login timeout";
session_destroy();
}else{
$_SESSION[times]=mktime() ;
}
}
?>

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