Funciones de APC

apc_add — Poner una variable en caché en el almacén de datos
apc_bin_dump — Obtener una copia binaria de los archivos y variables de usuario dados
apc_bin_dumpfile — Imprimir a un archivo una copia binaria de los archivos y variables de usuario almacenados en caché
apc_bin_load — Cargar una copia binaria en la caché de archivo/usuario de APC
apc_bin_loadfile — Cargar una copia binaria desde un archivo a la caché de archivo/usuario de APC
apc_cache_info — Recupera información que hay en caché del almacén de datos de APC
apc_cas — Actualiza un valor anterior por un nuevo valor
apc_clear_cache — Limpia la caché de APC
apc_compile_file — Almacena un archivo en la caché de código de byte, evitando todos los filtros
apc_dec — Disminuye un número almacenado
apc_define_constants — Define un conjunto de constantes para recuperación y definición en masa
apc_delete_file — Borra archivos de la caché del código de operación
apc_delete — Elimina una variable almacenada de la caché
apc_exists — Comprobar si existe una clave de APC
apc_fetch — Traer una variable almacenada desde la caché
apc_inc — Aumentar un número almacenado
apc_load_constants — Carga un conjunto de constantes de la caché
apc_sma_info — Recupera la información de la Asignación de Memoria Compartida de APC
apc_store — Guardar una variable en caché en el almacén de datos

apc_add

Constantes predefinidas

Last updated: Fri, 20 May 2011

add a note User Contributed Notes Funciones de APC

joe at simpson dot com 20-Sep-2007 11:53


It seems there are issues when using APC to cache database result sets as PDOStatements. Any attempts I have made always result in an exception being thrown with the message: 'You cannot serialize or unserialize PDOStatement instances'

zytzagoo at NOSPAMPLEASEgmail dot com 30-Jul-2007 01:21


Keep in mind to always prefix or suffix your cache key names with something specific to your site/app/setup, to avoid the risk of your apc cache entries being overwritten/deleted/modified by someone else on the same server.





Assume we have some code like this:





<?php apc_store('config', $cfg); ?>





Now assume someone else on the same server is also using 'config' as the key passed to an apc_store(), apc_delete() (etc.) call in some other piece of code on the whole server.





Since you're both working on the exact same cache entry, all sorts of wierd things can happen, but the problem is not in your code at all.

anon 03-Jul-2007 07:28


If you don't want any APC info visible without logging in, insert this code at line 173 of apc.php:





<?php





if (!$AUTHENTICATED) {


    echo '<div class="authneeded">You need to login to see the user values here!<br/>&nbsp;<br/>';


    put_login_link("Login now!");


    echo '</div>';


    die();


}





?>

bjoern dot andersen at atosorigin dot com 23-May-2007 03:14


In IIS6 you can't use php_apc.dll with application pools or webgardens (Multi-Instance/Multi-Threading). Maybe this applies even to all Multithreading environments - i don't know. 



When you try it, the Application pools terminate when requests run simultaneously.

ashus at atlas dot cz 21-Mar-2007 02:56


If you don't really need caching and plan to use it for one page only, you could try an alternative; writing a file and then flushing it back if specified time hasn't passed. I use it to read and parse third party websites, to check for new subtitles and output a RSS xml file.



<?php

if ((is_file($_SERVER['SCRIPT_FILENAME'].'.cached'))

    && (time()-filemtime($_SERVER['SCRIPT_FILENAME'].'.cached') < 3600))

    {

    readfile($_SERVER['SCRIPT_FILENAME'].'.cached');

    exit;

    }



// (the php script itself goes here)



echo $out;

$fp = fopen($_SERVER['SCRIPT_FILENAME'].'.cached', 'w');

fwrite($fp, $out);

fclose($fp);



?>



Note, that this only works for pages, which are without GET or POST variables, sessions, etc. You can change the number of seconds the cache works for (3600 = an hour). Also, use "$out.=" instead of "echo" command. Just store all output to that variable (if you need to use it inside a function, use "global $out" instead).

This workaround was written in about 5 minutes and may contain bugs.

dustymugs 31-Jan-2007 02:14


In windows, if you load php_apc.dll but do not enable it, apache may crash when attempting to restart or stop.



So, if you've not enabled APC but are loading it, comment out the loading.

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Funciones de APC

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