in Drupal\views\Plugin\views\HandlerBase we find this function
protected function caseTransform($string, $option) {
switch ($option) {
default:
return $string;
case 'upper':
return mb_strtoupper($string);
case 'lower':
return mb_strtolower($string);
case 'ucfirst':
return Unicode::ucfirst($string);
case 'ucwords':
return Unicode::ucwords($string);
}
}In php 8.3 those mb_function require a string, but the $string argument is untyped, so if $string is NULL, we get this warning:
Deprecated function: mb_strtoupper(): Passing null to parameter #1 ($string) of type string is deprecated
The above function is called by Drupal\views\Plugin\views\argument\StringArgument::summaryArgument();
$value = $this->caseTransform($data->{$this->base_alias}, $this->options['path_case']);
and it is possible that $data->{$this->base_alias} can be NULL
Solution: check that $data->{$this->base_alias} is not empty before calling caseTransform.
Active
10.5 ✨
views.module
If this problem was discovered on a version of Drupal that is not 11.x, add that information in the issue summary and leave the version at 11.x. In Drupal core changes are made on on 11.x (our main development branch) first, and are then back ported as needed according to the Core change policies → . Also mentioned on the version → section of the list of issue fields documentation.