mysqlnd_qc_set_storage_handler(3) [php man page]

MYSQLND_QC_SET_STORAGE_HANDLER(3)					 1					 MYSQLND_QC_SET_STORAGE_HANDLER(3)

mysqlnd_qc_set_storage_handler - Change current storage handler

SYNOPSIS

       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)

SYBASE_SET_MESSAGE_HANDLER(3)											     SYBASE_SET_MESSAGE_HANDLER(3)

sybase_set_message_handler - Sets the handler called when a server message is raised

SYNOPSIS

       bool sybase_set_message_handler (callable  $handler, [resource  $link_identifier])

DESCRIPTION

       sybase_set_message_handler(3)  sets  a user function to handle messages generated by the server. You may specify the name of a global func-
       tion, or use an array to specify an object reference and a method name.

PARAMETERS

	      o $handler
		- The handler expects five arguments in the following order: message number, severity, state, line  number  and  description.  The
		first four are integers. The last is a string. If the function returns FALSE, PHP generates an ordinary error message.

	      o $link_identifier
		- If the link identifier isn't specified, the last opened link is assumed.

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

EXAMPLES

       Example #1

	      sybase_set_message_handler(3) callback function

	      <?php
		  function msg_handler($msgnumber, $severity, $state, $line, $text)
		  {
		      var_dump($msgnumber, $severity, $state, $line, $text);
		  }

		  sybase_set_message_handler('msg_handler');
	      ?>

       Example #2

	      sybase_set_message_handler(3) callback to a class

	      <?php
		  class Sybase {
		      function handler($msgnumber, $severity, $state, $line, $text)
		      {
			  var_dump($msgnumber, $severity, $state, $line, $text);
		      }
		  }

		  $sybase= new Sybase();
		  sybase_set_message_handler(array($sybase, 'handler'));
	      ?>

       Example #3

	      sybase_set_message_handler(3) unhandled messages

	      <?php
		  // Return FALSE from this function to indicate you can't handle
		  // this. The error is printed out as a warning, the way you're used
		  // to it if there is no handler installed.
		  function msg_handler($msgnumber, $severity, $state, $line, $text)
		  {
		      if (257 == $msgnumber) {
			  return false;
		      }
		      var_dump($msgnumber, $severity, $state, $line, $text);
		  }

		  sybase_set_message_handler('msg_handler');
	      ?>

NOTES

       Note

	      This function is only available when using the CT library interface to Sybase, and not with the DB library.

PHP Documentation Group 											     SYBASE_SET_MESSAGE_HANDLER(3)