event_buffer_watermark_set(3) [php man page]

EVENT_BUFFER_WATERMARK_SET(3)						 1					     EVENT_BUFFER_WATERMARK_SET(3)

event_buffer_watermark_set - Set the watermarks for read and write events

SYNOPSIS

       void event_buffer_watermark_set (resource  $bevent, int	$events, int  $lowmark, int  $highmark)

DESCRIPTION

	Sets the watermarks for read and write events. Libevent does not invoke read callback unless there is at least $lowmark bytes in the input
       buffer; if the read buffer is beyond the $highmark, reading is stopped. On output, the write callback is invoked whenever the buffered data
       falls below the $lowmark.

PARAMETERS

	      o $bevent
		- Valid buffered event resource.

	      o $events
		- Any combination of EV_READ and EV_WRITE.

	      o $lowmark
		- Low watermark.

	      o $highmark
		- High watermark.

PHP Documentation Group 											     EVENT_BUFFER_WATERMARK_SET(3)

IBASE_SET_EVENT_HANDLER(3)						 1						IBASE_SET_EVENT_HANDLER(3)

ibase_set_event_handler - Register a callback function to be called when events are posted

SYNOPSIS

       resource ibase_set_event_handler (callable  $event_handler, string  $event_name1, [string  $event_name2], [string  $...])

DESCRIPTION

       resource  ibase_set_event_handler  (resource   $connection, callable  $event_handler, string  $event_name1, [string  $event_name2], [string
       $...])

	This function registers a PHP user function as event handler for the specified events.

PARAMETERS

	      o $event_handler
		- The callback is called with the event name and the link resource as arguments whenever one of the specified events is posted	by
		the  database.	 The  callback	must return FALSE if the event handler should be canceled. Any other return value is ignored. This
		function accepts up to 15 event arguments.

	      o $event_name1
		- An event name.

	      o $event_name2
		- At most 15 events allowed.

RETURN VALUES

	The return value is an event resource. This resource can be used to free the event handler using ibase_free_event_handler(3).

EXAMPLES

       Example #1

	      ibase_set_event_handler(3) example

	      <?php

	      function event_handler($event_name, $link)
	      {
		  if ($event_name == "NEW ORDER") {
		      // process new order
		      ibase_query($link, "UPDATE orders SET status='handled'");
		  } else if ($event_name == "DB_SHUTDOWN") {
		      // free event handler
		      return false;
		  }
	      }

	      ibase_set_event_handler($link, "event_handler", "NEW_ORDER", "DB_SHUTDOWN");
	      ?>

SEE ALSO

       ibase_free_event_handler(3), ibase_wait_event(3).

PHP Documentation Group 												IBASE_SET_EVENT_HANDLER(3)