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PHP 8 - ListViewPrintAfter() [message #7805]

Thu, 16 March 2023 08:40

htManager
Messages: 431
Registered: May 2014

Senior Member

When calling an output2 pattern with php 8, I get the following error message:

Uncaught exception from TypeError, message = array_merge(): Argument #2 must be of type array, null given, code=0, file=C:\xampp\htdocs\radicore\includes\std.pdf.class.inc, line=1751 (# 256)

Error in line 496 of file 'C:\xampp\htdocs\radicore\includes\error.inc'.

PHP_SELF: /radicore/htm/training_plan_anwesenheit_gesamt(output2).php

Is it in my code or because of changing php version?

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Re: PHP 8 - ListViewPrintAfter() [message #7806 is a reply to message #7805]

Thu, 16 March 2023 09:22

AJM
Messages: 2363
Registered: April 2006
Location: Surrey, UK

Senior Member

This error shows that the following call

$after2 = $dbobject->_cm_ListView_print_after($current_row, $next_row);

is returning a result which is NOT an array. You need to find that code and fix it.

Tony Marston
http://www.tonymarston.net
http://www.radicore.org

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Re: PHP 8 - ListViewPrintAfter() [message #7807 is a reply to message #7806]

Thu, 16 March 2023 12:23

htManager
Messages: 431
Registered: May 2014

Senior Member

Yes, I feared that.

I still have problems working with my debugger because I have no experience. I use xdebug in eclipse. Do you have some advice for me, where I can find a manual or a link how to work with this best? I only find videos or documents with descriptions to set it up properly.

Or is there a better solution to work with?

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Re: PHP 8 - ListViewPrintAfter() [message #7808 is a reply to message #7807]

Fri, 17 March 2023 06:34

htManager
Messages: 431
Registered: May 2014

Senior Member

In line 1745 of std.pdf.class.inc there is the code: $after2 = $dbobject->_cm_ListView_print_after($current_row, $next_row);

In my custom method _cm_ListView_print_after() is $current_row an array with the values of the last record. $next_row isn't an array. It is a boolean variable with value false.

Do I have to change $next_row in _cm_ListView_print_after()? And if yes, how can I do this? Because the return value is $output.

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Re: PHP 8 - ListViewPrintAfter() [message #7809 is a reply to message #7808]

Sat, 18 March 2023 06:07

AJM
Messages: 2363
Registered: April 2006
Location: Surrey, UK

Senior Member

$next_row is set to FALSE if there is no next row. This always happens at end-of-file (EOF). Before you attempt to use the contents of $next_row you should check that it is not empty.

Similarly in the _cm_ListView_print_before() method the $prev_row parameter will be empty if there is no previous record. This always happens when you start by reading the first record.

Tony Marston
http://www.tonymarston.net
http://www.radicore.org

[Updated on: Sat, 18 March 2023 06:08]

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Re: PHP 8 - ListViewPrintAfter() [message #7810 is a reply to message #7809]

Mon, 20 March 2023 10:34

htManager
Messages: 431
Registered: May 2014

Senior Member

I found my bug. It was in the code of my _cm_ListView_print_after ($curr_row, $next_row) method. The $output = array() was in an if-clause. If false then $output was not set and $after2 was a boolean variable.

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Re: PHP 8 - ListViewPrintAfter() [message #7811 is a reply to message #7810]

Tue, 21 March 2023 05:31

AJM
Messages: 2363
Registered: April 2006
Location: Surrey, UK

Senior Member

I'm glad you have found and fixed the problem.

Tony Marston
http://www.tonymarston.net
http://www.radicore.org

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