APC User Cache

Table of Contents

Introduction
Installing/Configuring
Predefined Constants
APCu Functions
- apcu_add — Cache a new variable in the data store
- apcu_cache_info — Retrieves cached information from APCu's data store
- apcu_cas — Updates an old value with a new value
- apcu_clear_cache — Clears the APCu cache
- apcu_dec — Decrease a stored number
- apcu_delete — Removes a stored variable from the cache
- apcu_entry — Atomically fetch or generate a cache entry
- apcu_exists — Checks if entry exists
- apcu_fetch — Fetch a stored variable from the cache
- apcu_inc — Increase a stored number
- apcu_sma_info — Retrieves APCu Shared Memory Allocation information
- apcu_store — Cache a variable in the data store
APCUIterator — The APCUIterator class
- APCUIterator::__construct — Constructs an APCUIterator iterator object
- APCUIterator::current — Get current item
- APCUIterator::getTotalCount — Get total count
- APCUIterator::getTotalHits — Get total cache hits
- APCUIterator::getTotalSize — Get total cache size
- APCUIterator::key — Get iterator key
- APCUIterator::next — Move pointer to next item
- APCUIterator::rewind — Rewinds iterator
- APCUIterator::valid — Checks if current position is valid

The APCUIterator class

Introduction

The APCUIterator class makes it easier to iterate over large APCu caches. This is helpful as it allows iterating over large caches in steps, while grabbing a defined number of entries per lock instance, so it frees the cache locks for other activities rather than hold up the entire cache to grab 100 (the default) entries. Also, using regular expression matching is more efficient as it's been moved to the C level.

Class synopsis

APCUIterator

class APCUIterator implements Iterator {

/* Methods */

public __construct ([ mixed $search = null [, int $format = APC_ITER_ALL [, int $chunk_size = 100 [, int $list = APC_LIST_ACTIVE ]]]] )

public mixed current ( void )

public int getTotalCount ( void )

public int getTotalHits ( void )

public int getTotalSize ( void )

public string key ( void )

public void next ( void )

public void rewind ( void )

public void valid ( void )

}