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EventSource.class.php
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EventSource.class.php
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<?php
/**
* EventSource class
* @author Zsdroid [[email protected]]
*/
class EventSource
{
/**
* @var $event event
*/
private $event = NULL;
/**
* @var $data data
*/
private $data = NULL;
/**
* @var $id id
*/
private $id = NULL;
/**
* @var $retry try time
*/
private $retry = NULL;
/**
* set event
* @param string $event event
*
* @return EventSource EventSource Object
*/
public function setEvent($event = NULL)
{
$this->event = $event;
return $this;
}
/**
* set data
* @param array|string $data data
*
* @return EventSource EventSource Object
*/
public function setData($data = [])
{
!is_array($data) and $data = [$data];
$this->data = $data;
return $this;
}
/**
* set LastEventId
* @param int $lastEventId LastEventId
*
* @return EventSource EventSource Object
*/
public function setLastEventId($lastEventId = 1)
{
$this->id = $lastEventId;
return $this;
}
/**
* set retry
* @param int $retry try time
*
* @return EventSource EventSource Object
*/
public function setRetry($retry = 1000)
{
$this->retry = $retry;
return $this;
}
/**
* get the LAST_EVENT_ID
* <br><br>
* the first time you called the function, you will get NULL, because client not send LAST_EVENT_ID
* <br>
* so if the function returned NULL, you can initialize the LAST_EVENT_ID, and give it to <i>setLastEventId()<i>
*/
public function getLastEventId()
{
return isset($_SERVER['HTTP_LAST_EVENT_ID']) ? $_SERVER['HTTP_LAST_EVENT_ID'] : NULL;
}
/**
* stop the EventSource
*/
public function stop()
{
if(PHP_VERSION >= 5.4)
http_response_code('204');
else
header('HTTP/1.1 204 No Content');
exit;
}
/**
* output
*/
public function output()
{
$strs = [];
$d = ['event','data','id','retry'];
foreach($d as $value)
{
if($this->{$value} != NULL)
{
if(is_array($this->{$value}))
{
foreach($this->{$value} as $valuea)
{
$strs[] = $value.':'.$valuea;
}
}
else
{
$strs[] = $value.':'.$this->{$value};
}
}
}
header('Content-Type: text/event-stream');
header('Cache-Control: no-cache');
echo implode(PHP_EOL,$strs).PHP_EOL.PHP_EOL;
flush();
}
}