APCu
PHP Manual

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(
    arraystringnull $search = null,
    int $format = APC_ITER_ALL,
    int $chunk_size = 100,
    int $list = APC_LIST_ACTIVE
)
public mixed current()
public int getTotalCount()
public int getTotalHits()
public int getTotalSize()
public string key()
public bool next()
public void rewind()
public bool valid()
}
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