posix_times

(PHP 4, PHP 5, PHP 7, PHP 8)

posix_times — Restituisce il tempo del processo

Descrizione

posix_times(): array

Restituisce una serie di stringhe con le imformazioni sull'utilizzo di CPU del processo. L'indice della matrice è:

ticks - il numero di ticks dall'ultimo rebbot.
utime - user time utilizzato dal processo.
stime - system time utilizzato dal processo.
cutime - user time uutilizzato dal processo e dai suoi figli.
cstime - system time uutilizzato dal processo e dai suoi figli.

Avviso

Questa funzione non è affidabile nell'uso, può restituire valori negativi per tempi molto elevati.

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User Contributed Notes 4 notes

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murphy at nmc-online dot co dot uk ¶

21 years ago

I am not sure why, and it could just be me but on my FreeBSD system using
$time = posix_times();
$time['ticks'] is an enormous value that bears no relation to the system uptime (I tested by rebooting the system,  the number does not change).
I checked my timecounters, they tick every 10.000msec and I did the maths on the returned value and it suggested the machine had been up for over 200 days - it was reformatted about a week ago.
This could be to do with FreeBSD, or *BSD, or just *idiots like me but just check before you use the function.
 ~
FreeBSD 5.1-R, Apache 2.0.46, PHP4.3.2

down

brain at winbot dot co dot uk ¶

20 years ago

doesnt work with freebsd. as stated above the clock ticks at different intervals on different platforms.

for system uptime consider piping the uptime command or similar, depending on if performance is an issue or not.

down

not_rich_yet at hotmail dot com ¶

21 years ago

If you want the output to be 'grammatically correct' then try the following code.  It will eg print '1 minute' as opposed to '1 minutes', the same goes for days and hours:

Put the following code somewhere in the head of the page code:

<?php
function uptime() {
if (!$times = posix_times() ) {
return ("unknown");
} else {
$now = $times['ticks'];
$days = intval($now / (60*60*24*100));
$remainder = $now % (60*60*24*100);
$hours = intval($remainder / (60*60*100));
$remainder = $remainder % (60*60*100);
$minutes = intval($remainder / (60*100));
if ($days == 1) {$writeDays = "day";} else {$writeDays = "days";}
if ($hours == 1) {$writeHours = "hour"; } else {$writeHours = "hours";}
if ($minutes == 1) {$writeMins = "minute";} else {$writeMins = "minutes";}
return ("$days $writeDays, $hours $writeHours, $minutes $writeMins");
}
}
?>

Then put this bit where you want the info displayed:

<?php
print uptime();
?>

Regards,

nry

down

rossz+php at vamos-wentworth dot org ¶

22 years ago

This function will return the system uptime as a human readable string such as "172 days, 18 hours, 15 minutes".  I didn't bother to handle singular so the grammar could be a bit off, e.g. 1 hours.

function uptime() {
  if (!$times = posix_times()) {
    return ("unknown");
  } else {
    $now = $times['ticks'];
    $days = intval($now / (60*60*24*100));
    $remainder = $now % (60*60*24*100);
    $hours = intval($remainder / (60*60*100));
    $remainder = $remainder % (60*60*100);
    $minutes = intval($remainder / (60*100));
    return ("$days days, $hours hours, $minutes minutes");
  }
}

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