MYSQLND_QC_SET_STORAGE_HANDLER(3) 1 MYSQLND_QC_SET_STORAGE_HANDLER(3)mysqlnd_qc_set_storage_handler - Change current storage handlerSYNOPSIS
bool mysqlnd_qc_set_storage_handler (string $handler)
DESCRIPTION
Sets the storage handler used by the query cache. A list of available storage handler can be obtained from mysqlnd_qc_get_available_han-
dlers(3). Which storage are available depends on the compile time configuration of the query cache plugin. The default storage handler is
always available. All other storage handler must be enabled explicitly when building the extension.
PARAMETERS
o $handler
- Handler can be of type string representing the name of a built-in storage handler or an object of type mysqlnd_qc_han-
dler_default. The names of the built-in storage handler are default, APC, MEMCACHE, sqlite.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
If changing the storage handler fails a catchable fatal error will be thrown. The query cache cannot operate if the previous storage han-
dler has been shutdown but no new storage handler has been installed.
EXAMPLES
Example #1
mysqlnd_qc_set_storage_handler(3) example
The example shows the output from the built-in default storage handler. Other storage handler may report different data.
<?php
var_dump(mysqlnd_qc_set_storage_handler("memcache"));
if (true === mysqlnd_qc_set_storage_handler("default"))
printf("Default storage handler activated");
/* Catchable fatal error */
var_dump(mysqlnd_qc_set_storage_handler("unknown"));
?>
The above examples will output:
bool(true)
Default storage handler activated
Catchable fatal error: mysqlnd_qc_set_storage_handler(): Unknown handler 'unknown' in (file) on line (line)
SEE ALSO
Installation, mysqlnd_qc_get_available_handlers(3).
PHP Documentation Group MYSQLND_QC_SET_STORAGE_HANDLER(3)
Check Out this Related Man Page
XML_SET_NOTATION_DECL_HANDLER(3) 1 XML_SET_NOTATION_DECL_HANDLER(3)xml_set_notation_decl_handler - Set up notation declaration handlerSYNOPSIS
bool xml_set_notation_decl_handler (resource $parser, callable $handler)
DESCRIPTION
Sets the notation declaration handler function for the XML parser $parser.
A notation declaration is part of the document's DTD and has the following format:
<!NOTATION <parameter>name</parameter>
{ <parameter>systemId</parameter> | <parameter>publicId</parameter>?>
PARAMETERS
o $parser
- A reference to the XML parser to set up notation declaration handler function.
o $handler
-$handler is a string containing the name of a function that must exist when xml_parse(3) is called for $parser. The function
named by $handler must accept five parameters:
handler (resource $parser, string $notation_name, string $base, string $system_id, string $public_id)
o $parser
- The first parameter, parser, is a reference to the XML parser calling the handler.
o $notation_name
- This is the notation's $name, as per the notation format described above.
o $base
- This is the base for resolving the system identifier ($system_id) of the notation declaration. Currently this parameter
will always be set to an empty string.
o $system_id
- System identifier of the external notation declaration.
o $public_id
- Public identifier of the external notation declaration.
If a handler function is set to an empty string, or FALSE, the handler in question is disabled.
Note
Instead of a function name, an array containing an object reference and a method name can also be supplied.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
PHP Documentation Group XML_SET_NOTATION_DECL_HANDLER(3)