APCIterator
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APCIterator::__construct

(PECL apc >= 3.1.1)

APCIterator::__construct — Constructs an APCIterator iterator object

说明

public APCIterator::__construct ( string $cache [, mixed $search = null [, int $format [, int $chunk_size = 100 [, int $list ]]]] )

Constructs an APCIterator object.

参数

cache

The cache type, which will be user or file.

search

A PCRE regular expression that matches against APC key names, either as a string for a single regular expression, or as an array of regular expressions. Or, optionally pass in NULL to skip the search.

format

The desired format, as configured with one ore more of the APC_ITER_* constants.

chunk_size

The chunk size. Must be a value greater than 0. The default value is 100.

list

The type to list. Either pass in APC_LIST_ACTIVE or APC_LIST_DELETED.

返回值

An APCIterator object on success, or NULL on failure.

范例

Example #1 A APCIterator::__construct() example

<?php
foreach (new APCIterator('user', '/^counter\./') as $counter) {
    echo "$counter[key]: $counter[value]\n";
    apc_dec($counter['key'], $counter['value']);
}
?>

参见

APCIterator
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PHP手册
PHP手册 - N: Constructs an APCIterator iterator object

用户评论:

petabyte (10-Aug-2011 02:38)

With MAMP (using PHP 5.3.5 and APC 3.1.7) passing an array with multiple regex strings as $search arg always yields an empty APCIterator. Whereas passing a single string regex works. (Note: I only tried cache type 'user'.)

Workaround: Concatenated all regexes to single one with alternation. Example:

<?php
$results = new APCIterator('user', '/^('.implode('|', $patterns).')');
?>

rodney dot rehm at medialize dot de (29-Jun-2011 11:29)

new APCIterator('file'); only lists the files loaded within the current process-scope. It is thus not possible to check if a given file already resides in the op-code cache.
(PHP5.3.6 APC3.1.9)

Anti Veeranna (27-Oct-2010 08:46)

Iterating (and specifically using current()) does not expunge cache entries for which $ttl has passed, you need to use apc_fetch to get rid of stale entries.