posix_times

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

    posix_times — Obtener los tiempos de procesos

    Descripción

    posix_times(): array|false

    Obtiene informaciónsobre el uso actual de CPU.

    Parámetros

    Esta función no tiene parámetros.

    Valores devueltos

    Devuelve un hash de cadenas con iformación sobre el uso de CPU del proceso actual. Los índices del hash son:

    • ticks - el número de pulsos de reloj que han trasncurrido desde el reinicio.
    • utime - tiempo de usuario usado por el proceso actual.
    • stime - tiempo de sistema usado por el proceso actual.
    • cutime - tiempop de usuario usado por el proceso actual y sus hijos.
    • cstime - tiempo de sistema usado por el proceso actual y sus hijos.
    La función devuelve false en caso de fallo.

    Ejemplos

    Ejemplo #1 Ejemplo de uso de posix_times()

    <?php

    $tiempos     = posix_times();

    print_r($tiempos );
    ?>

    El resultado del ejemplo sería algo similar a:

    Array
(
    [ticks] => 25814410
    [utime] => 1
    [stime] => 1
    [cutime] => 0
    [cstime] => 0
)

    Notas

    Advertencia

    Esta función no es fiable de usar, puede devolver valores negativos para tiempos altos.

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    User Contributed Notes 4 notes

    up
    2
    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
    up
    1
    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.
    up
    0
    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
    up
    0
    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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