A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: models/Problema.php

Line Number: 552

Backtrace:

File: /homepages/33/d349327298/htdocs/otraeducacion/matematicas/application/models/Problema.php
Line: 552
Function: _error_handler

File: /homepages/33/d349327298/htdocs/otraeducacion/matematicas/application/models/Problema.php
Line: 15
Function: getFamilias

File: /homepages/33/d349327298/htdocs/otraeducacion/matematicas/application/controllers/Problemas.php
Line: 235
Function: generarVarios

File: /homepages/33/d349327298/htdocs/otraeducacion/matematicas/index.php
Line: 317
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /homepages/33/d349327298/htdocs/otraeducacion/matematicas/system/core/Exceptions.php:271)

Filename: problemas/imprimir_cuaderno.php

Line Number: 68

Backtrace:

File: /homepages/33/d349327298/htdocs/otraeducacion/matematicas/application/views/problemas/imprimir_cuaderno.php
Line: 68
Function: header

File: /homepages/33/d349327298/htdocs/otraeducacion/matematicas/application/controllers/Problemas.php
Line: 240
Function: require_once

File: /homepages/33/d349327298/htdocs/otraeducacion/matematicas/index.php
Line: 317
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /homepages/33/d349327298/htdocs/otraeducacion/matematicas/system/core/Exceptions.php:271)

Filename: problemas/imprimir_cuaderno.php

Line Number: 69

Backtrace:

File: /homepages/33/d349327298/htdocs/otraeducacion/matematicas/application/views/problemas/imprimir_cuaderno.php
Line: 69
Function: header

File: /homepages/33/d349327298/htdocs/otraeducacion/matematicas/application/controllers/Problemas.php
Line: 240
Function: require_once

File: /homepages/33/d349327298/htdocs/otraeducacion/matematicas/index.php
Line: 317
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /homepages/33/d349327298/htdocs/otraeducacion/matematicas/system/core/Exceptions.php:271)

Filename: tcpdf/tcpdf.php

Line Number: 7624

Backtrace:

File: /homepages/33/d349327298/htdocs/otraeducacion/matematicas/application/libraries/tcpdf/tcpdf.php
Line: 7624
Function: header

File: /homepages/33/d349327298/htdocs/otraeducacion/matematicas/application/views/problemas/imprimir_cuaderno.php
Line: 70
Function: Output

File: /homepages/33/d349327298/htdocs/otraeducacion/matematicas/application/controllers/Problemas.php
Line: 240
Function: require_once

File: /homepages/33/d349327298/htdocs/otraeducacion/matematicas/index.php
Line: 317
Function: require_once

TCPDF ERROR: Some data has already been output to browser, can't send PDF file