Fatal error when updating a link with an ampersand in its name #5021
Description
When one updates a link with an ampersand in its name, updating fails with an 500 error:
Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array, null given in ./main/inc/lib/kses-0.2.2/kses.php:718
Stack trace:
#0 ./main/inc/lib/kses-0.2.2/kses.php(718): in_array()
#1 [internal function]: kses_named_entities()
#2 ./main/inc/lib/kses-0.2.2/kses.php(693): preg_replace_callback()
#3 ./main/inc/lib/kses-0.2.2/kses.php(105): kses_normalize_entities()
#4 ./main/inc/lib/formvalidator/FormValidator.class.php(2044): kses()
#5 ./main/inc/lib/pear/HTML/QuickForm.php(1256): html_filter()
#6 ./main/inc/lib/pear/HTML/QuickForm.php(1225): HTML_QuickForm->_recursiveFilter()
#7 ./main/inc/lib/formvalidator/FormValidator.class.php(219): HTML_QuickForm->applyFilter()
#8 ./main/inc/lib/link.lib.php(1620): FormValidator->addText()
#9 ./main/link/link.php(141): Link::getLinkForm()
#10 {main} thrown in ./main/inc/lib/kses-0.2.2/kses.php on line 718
This bug is introduced after AngelFQC has added an HTML filter (see 4a58770#diff-acef17cb3f0847820d1a81a239c1efe142b0b8d8c9ca1dd727d4228d925e62ca).
I'm on Chamilo 1.11.26 running PHP 8.0 on Ubuntu Jammy Jellyfish.
I expect upgrading kses from the version hosted on SourceForge (https://sourceforge.net/projects/kses/) to the (?) one hosted on GitHub (https://github.com/soosyze/kses), will fix this. I didn't' test this as it requires some rework in the FormValidator class.