IT. Expert System.

PHP

Cache a new variable in the data store


apc_add

(PECL apc >= 3.0.13)

apc_add Cache a new variable in the data store

Description

bool apc_add ( string $key [, mixed $var [, int $ttl = 0 ]] )
array apc_add ( array $values [, mixed $unused [, int $ttl = 0 ]] )

Caches a variable in the data store, only if it's not already stored.

Note: Unlike many other mechanisms in PHP, variables stored using apc_add() will persist between requests (until the value is removed from the cache).

Parameters

key

Store the variable using this name. keys are cache-unique, so attempting to use apc_add() to store data with a key that already exists will not overwrite the existing data, and will instead return FALSE. (This is the only difference between apc_add() and apc_store().)

var

The variable to store

ttl

Time To Live; store var in the cache for ttl seconds. After the ttl has passed, the stored variable will be expunged from the cache (on the next request). If no ttl is supplied (or if the ttl is 0), the value will persist until it is removed from the cache manually, or otherwise fails to exist in the cache (clear, restart, etc.).

values

Names in key, variables in value.

Return Values

Returns TRUE on success or FALSE on failure. Second syntax returns array with error keys.

Examples

Example #1 A apc_add() example

<?php
$bar 
'BAR';
apc_add('foo'$bar);
var_dump(apc_fetch('foo'));
echo 
"\n";
$bar 'NEVER GETS SET';
apc_add('foo'$bar);
var_dump(apc_fetch('foo'));
echo 
"\n";
?>

The above example will output:

 string(3) "BAR" string(3) "BAR" 

See Also



Content

Android Reference

Java basics

Java Enterprise Edition (EE)

Java Standard Edition (SE)

SQL

HTML

PHP

CSS

Java Script

MYSQL

JQUERY

VBS

REGEX

C

C++

C#

Design patterns

RFC (standard status)

RFC (proposed standard status)

RFC (draft standard status)

RFC (informational status)

RFC (experimental status)

RFC (best current practice status)

RFC (historic status)

RFC (unknown status)

IT dictionary

License.
All information of this service is derived from the free sources and is provided solely in the form of quotations. This service provides information and interfaces solely for the familiarization (not ownership) and under the "as is" condition.
Copyright 2016 © ELTASK.COM. All rights reserved.
Site is optimized for mobile devices.
Downloads: 94 / 158677756. Delta: 0.04543 с