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).')');
?>
APCIterator::__construct
(PECL apc >= 3.1.1)
APCIterator::__construct — Constructs an APCIterator iterator object
설명
public APCIterator::__construct
( string
$cache
[, mixed $search = null
[, int $format = APC_ITER_ALL
[, int $chunk_size = 100
[, int $list = APC_LIST_ACTIVE
]]]] )Constructs an APCIterator object.
인수
-
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
NULLto skip the search. -
format -
The desired format, as configured with one or 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_ACTIVEorAPC_LIST_DELETED.
반환값
An APCIterator object on success,
or NULL on failure.
예제
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']);
}
?>
참고
- apc_exists() - Checks if APC key exists
- apc_cache_info() - Retrieves cached information from APC's data store
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User Contributed Notes 3 notes
petabyte ¶
13 years ago
puiumarius at gmail dot com ¶
10 years ago
There is a bug in APCIterator: whatever the chunk size, APCIterator gets ALL keys matching the specified pattern (it seems that $chunk_size parameter is ignored).
Also, the documentation states that the default chunk size is 100, but even that is ignored.
Tested APC version is 3.1.13.
Example (I have 180 keys for this pattern in total):
$objIterator = new APCIterator('user', '/^key_prefix_\.*/', APC_ITER_ALL, 20);
If I itterate $objIterator and then count() the results, I get 180.
Also, for:
$objIterator = new APCIterator('user', '/^key_prefix_\.*/');
Same count(), 180.
Even $objIterator->getTotalCount() returns 180.
Anti Veeranna ¶
14 years ago
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.
