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  Classes of André Liechti   Pure PHP PJLink class   Download  
Role: Documentation
Content type: text/markdown
Description: Documentation
Class: Pure PHP PJLink class
Control data projectors via socket connections
Author: By
Last change: Lower case response are now accepted
Date: 4 years ago
Size: 6,428 bytes


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Pure PHP PJLink library

The PJLink PHP class is the lightest pure PHP package available for operating and controlling data projectors using the PJLink Class1 and Class 2 standard.

PJLink Class1 specifications are available here:

PJLink Class2 specifications are available here:

PJLink test software is available gere:

(c) 2017-2019 SysCo systemes de communication sa

Current build: (2019-03-13)

No external file is needed (no PEAR, no PECL, no cURL).

Change Log

2019-03-13 tomatow Lower case response are now accepted
2017-09-05 SysCo/al First public Class2 support
2017-04-24 SysCo/al First public version
2017-04-23 SysCo/al Initial implementation


Copyright (c) 2017-2019 SysCo systemes de communication sa SysCo (tm) is a trademark of SysCo systemes de communication sa ( All rights reserved.

PJLink PHP class is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

PJLink PHP class is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with PJLink PHP class. If not, see <>.


Every command send to the projector return false is something is wrong. The error message can be detailed by calling the getError() method.

Public methods available:

  # Class1/2 functions
   setDevice($host, [[[$password], $timeout], $port])
   powerOn([[[[$host], $password], $timeout], $port])
   powerOff([[[[$host], $password], $timeout], $port])
   getPowerState([[[[$host], $password], $timeout], $port])
   setInput($input, [[[[$host], $password], $timeout], $port])
   getInput([[[[$host], $password], $timeout], $port])
   muteVideoOn([[[[$host], $password], $timeout], $port])
   muteVideoOff([[[[$host], $password], $timeout], $port])
   muteAudioOn([[[[$host], $password], $timeout], $port])
   muteAudioOff([[[[$host], $password], $timeout], $port])
   muteVideoAudioOn([[[[$host], $password], $timeout], $port])
   muteVideoAudioOff([[[[$host], $password], $timeout], $port])
   getMuteState([[[[$host], $password], $timeout], $port])
   getErrorState([[[[$host], $password], $timeout], $port])
   getLampState([[[[$host], $password], $timeout], $port])
   getInputList([[[[$host], $password], $timeout], $port])
   getName([[[[$host], $password], $timeout], $port])
   getManufactureName([[[[$host], $password], $timeout], $port])
   getProductName([[[[$host], $password], $timeout], $port])
   getOtherInfo([[[[$host], $password], $timeout], $port])
   getClass([[[[$host], $password], $timeout], $port])
  # Class2 only functions
   getSerialNumber([[[[$host], $password], $timeout], $port])
   getSoftwareVersion([[[[$host], $password], $timeout], $port])
   getInputTerminalName($input, [[[[$host], $password], $timeout], $port])
   getInputResolution([[[[$host], $password], $timeout], $port])
   getRecommendedResolution([[[[$host], $password], $timeout], $port])
   getFilterUsage([[[[$host], $password], $timeout], $port])
   getLampReplacementModel([[[[$host], $password], $timeout], $port])
   getFilterReplacementModel([[[[$host], $password], $timeout], $port])
   setSpeakerVolume($volume, [[[[$host], $password], $timeout], $port])
   setMicrophoneVolume($volume, [[[[$host], $password], $timeout], $port])
   freezeOn([[[[$host], $password], $timeout], $port])
   freezeOff([[[[$host], $password], $timeout], $port])
   getFreezeState([[[[$host], $password], $timeout], $port])


// Example 1

  $pjlink = new PJLink();
  if (false === $pjlink->powerOn("")) {
    echo $pjlink->getError();
  } elseif (false === $pjlink->setInput(11, "")) {
    echo $pjlink->getError();

// Example 2

  $pjlink = new PJLink(1);
  $pjlink->setDevice("", "my_pjlink_pass", 10, 4352);
  if (false === $pjlink->powerOn()) {
    echo $pjlink->getError();
  } elseif (false === $pjlink->setInput(11)) {
    echo $pjlink->getError();
  echo "Device: ".$pjlink->getManufactureName().", ".$pjlink->getProductName()."<br />\n";

// Example 3

  $pjlink = new PJLink(2);
  $pjlink->setDevice("", "my_pjlink_pass", 10, 4352);
  if (false === $pjlink->powerOn()) {
    echo $pjlink->getError();
  } elseif (false === $pjlink->setInput(11)) {
    echo $pjlink->getError();
  echo "Device: ".$pjlink->getManufactureName().", ".$pjlink->getProductName()."<br />\n";

The test.class.php file will test all methods of the class. It can be used with the PJLink test software.

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