A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::open($save_path, $name) should either be compatible with SessionHandlerInterface::open(string $path, string $name): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 132

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::close() should either be compatible with SessionHandlerInterface::close(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 294

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::read($session_id) should either be compatible with SessionHandlerInterface::read(string $id): string|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 168

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::write($session_id, $session_data) should either be compatible with SessionHandlerInterface::write(string $id, string $data): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 237

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::destroy($session_id) should either be compatible with SessionHandlerInterface::destroy(string $id): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 317

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::gc($maxlifetime) should either be compatible with SessionHandlerInterface::gc(int $max_lifetime): int|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 358

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

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Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 282

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_set_cookie_params(): Session cookie parameters cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 294

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 304

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 314

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

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Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 315

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 316

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 317

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 375

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: drivers/Session_files_driver.php

Line Number: 108

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_set_save_handler(): Session save handler cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 110

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Session cannot be started after headers have already been sent

Filename: Session/Session.php

Line Number: 143

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/core/MY_Controller.php
Line: 15
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 7
Function: __construct

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated

Filename: controllers/Programstudi.php

Line Number: 25

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 25
Function: preg_match

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 502
Function: highsecure

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated

Filename: controllers/Programstudi.php

Line Number: 27

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 27
Function: preg_match

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 502
Function: highsecure

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated

Filename: controllers/Programstudi.php

Line Number: 35

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 35
Function: htmlspecialchars

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 502
Function: highsecure

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Constant FILTER_SANITIZE_STRING is deprecated

Filename: controllers/Programstudi.php

Line Number: 504

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 504
Function: _error_handler

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated

Filename: controllers/Programstudi.php

Line Number: 25

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 25
Function: preg_match

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 505
Function: highsecure

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated

Filename: controllers/Programstudi.php

Line Number: 27

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 27
Function: preg_match

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 505
Function: highsecure

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated

Filename: controllers/Programstudi.php

Line Number: 35

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 35
Function: htmlspecialchars

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 505
Function: highsecure

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Constant FILTER_SANITIZE_STRING is deprecated

Filename: controllers/Programstudi.php

Line Number: 506

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 506
Function: _error_handler

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: preg_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated

Filename: core/Common.php

Line Number: 725

Backtrace:

File: /home/k4699548/siseksi.unper.ac.id/application/controllers/Programstudi.php
Line: 509
Function: xss_clean

File: /home/k4699548/siseksi.unper.ac.id/index.php
Line: 316
Function: require_once

SISTEM INFORMASI PUBLIKASI UNPER

Scopus Documents

Total : 3

Q2
Learning Obstacle on Addition and Subtraction of Primary School Students: Analysis of Algebraic Thinking
Authors : GERI SYAHRIL SIDIK
Citation : 3
Cover Date : 2021-01-01
Type Doc : Journal
Publication Name : Education Research International
ISSN : 20904002
DOI : 10.1155/2021/5935179
Q4
Learning Obstacle of Addition Operation Whole Number in Elementary Schools
Authors : GERI SYAHRIL SIDIK
Citation : 2
Cover Date : 2021-03-23
Type Doc : Conference Proceeding
Publication Name : Journal of Physics: Conference Series
ISSN : 17426588
DOI : 10.1088/1742-6596/1842/1/012070
Q3
BIBLIOMETRIC ANALYSIS OF PUBLICATIONS ABOUT GAME-BASED LEARNING IN SCOPUS DATABASE USING VOSVIEWER
Authors : HATMA HERIS MAHENDRA
Citation : 0
Cover Date : 2023-02-01
Type Doc : Journal
Publication Name : Journal of Engineering Science and Technology
ISSN : 18234690
DOI :