phpBB API Documentation
Class

phpbb\cache\driver\memcache

class memcache extends memory

ACM for Memcached

Properties

$vars
$is_modified
$sql_rowset
$sql_row_pointer
$cache_dir
$key_prefix
$extension
$memcache
$flags

Methods

null purge()

Purge cache data
null unload()

Unload cache object
int|bool sql_load(string $query)

Load result of an SQL query from cache.

 from base
bool sql_exists(int $query_id)

Check if result for a given SQL query exists in cache.

 from base
array|bool sql_fetchrow(int $query_id)

Fetch row from cache (database)

 from base
string|bool sql_fetchfield(int $query_id, string $field)

Fetch a field from the current row of a cached database result (database)

 from base
bool sql_rowseek(int $rownum, int $query_id)

Seek a specific row in an a cached database result (database)

 from base
bool sql_freeresult(int $query_id)

Free memory used for a cached database result (database)

 from base
bool remove_file(string $filename, bool $check = false)

Removes/unlinks file

 from base
__construct()

Set cache path
mixed load()

Load global cache

 from memory
null save()

Save modified objects

 from memory
null tidy()

Tidy cache

 from memory
mixed get(string $var_name)

Get saved cache object

 from memory
null put(string $var_name, mixed $var, int $ttl = 2592000)

Put data into cache

 from memory
null destroy(string $var_name, string $table = '')

Destroy cache data

 from memory
bool _exists(string $var_name)

Check if a given cache entry exists

 from memory
int|mixed sql_save(driver_interface $db, string $query, mixed $query_result, int $ttl)

Save result of an SQL query in cache.

 from memory
bool _isset(string $var)

Check if a cache var exists

 from memory
mixed _read(string $var)

Fetch an item from the cache
bool _write(string $var, mixed $data, int $ttl = 2592000)

Store data in the cache
bool _delete(string $var)

Remove an item from the cache

Details

at line 74
public null purge()

Purge cache data

Return Value

null

at line 64
public null unload()

Unload cache object

Return Value

null

in base at line 94
public int|bool sql_load(string $query)

Load result of an SQL query from cache.

Parameters

string $query SQL query

Return Value

int|bool Query ID (integer) if cache contains a rowset for the specified query. False otherwise.

in base at line 114
public bool sql_exists(int $query_id)

Check if result for a given SQL query exists in cache.

Parameters

int $query_id

Return Value

bool

in base at line 122
public array|bool sql_fetchrow(int $query_id)

Fetch row from cache (database)

Parameters

int $query_id

Return Value

array|bool The query result if found in the cache, otherwise false.

in base at line 135
public string|bool sql_fetchfield(int $query_id, string $field)

Fetch a field from the current row of a cached database result (database)

Parameters

int $query_id
string $field The name of the column.

Return Value

string|bool The field of the query result if found in the cache, otherwise false.

in base at line 148
public bool sql_rowseek(int $rownum, int $query_id)

Seek a specific row in an a cached database result (database)

Parameters

int $rownum Row to seek to.
int $query_id

Return Value

bool

in base at line 162
public bool sql_freeresult(int $query_id)

Free memory used for a cached database result (database)

Parameters

int $query_id

Return Value

bool

in base at line 182
public bool remove_file(string $filename, bool $check = false)

Removes/unlinks file

Parameters

string $filename Filename to remove
bool $check Check file permissions

Return Value

bool True if the file was successfully removed, otherwise false

at line 47
public __construct()

Set cache path

in memory at line 51
public mixed load()

Load global cache

Return Value

mixed False if an error was encountered, otherwise the data type of the cached data

in memory at line 67
public null save()

Save modified objects

Return Value

null

in memory at line 82
public null tidy()

Tidy cache

Return Value

null

in memory at line 92
public mixed get(string $var_name)

Get saved cache object

Parameters

string $var_name Cache key

Return Value

mixed False if an error was encountered, otherwise the saved cached object

in memory at line 112
public null put(string $var_name, mixed $var, int $ttl = 2592000)

Put data into cache

Parameters

string $var_name Cache key
mixed $var Cached data to store
int $ttl Time-to-live of cached data

Return Value

null

in memory at line 128
public null destroy(string $var_name, string $table = '')

Destroy cache data

Parameters

string $var_name Cache key
string $table Table name

Return Value

null

in memory at line 182
public bool _exists(string $var_name)

Check if a given cache entry exists

Parameters

string $var_name Cache key

Return Value

bool True if cache file exists and has not expired. False otherwise.

in memory at line 202
public int|mixed sql_save(driver_interface $db, string $query, mixed $query_result, int $ttl)

Save result of an SQL query in cache.

In persistent cache stores, this function stores the query result to persistent storage. In other words, there is no need to call save() afterwards.

Parameters

driver_interface $db Database connection
string $query SQL query, should be used for generating storage key
mixed $query_result The result from \dbal::sqlquery, to be passed to \dbal::sqlfetchrow to get all rows and store them in cache.
int $ttl Time to live, after this timeout the query should expire from the cache.

Return Value

int|mixed If storing in cache succeeded, an integer $queryid representing the query should be returned. Otherwise the original $queryresult should be returned.

in memory at line 276
public bool _isset(string $var)

Check if a cache var exists

Parameters

string $var Cache key

Return Value

bool True if it exists, otherwise false

at line 88
public mixed _read(string $var)

Fetch an item from the cache

Parameters

string $var Cache key

Return Value

mixed Cached data

at line 102
public bool _write(string $var, mixed $data, int $ttl = 2592000)

Store data in the cache

Parameters

string $var Cache key
mixed $data Data to store
int $ttl Time-to-live of cached data

Return Value

bool True if the operation succeeded

at line 118
public bool _delete(string $var)

Remove an item from the cache

Parameters

string $var Cache key

Return Value

bool True if the operation succeeded