(PHP 8 >= 8.2.0)
libxml_get_external_entity_loader — Get the current external entity loader
libxml_get_external_entity_loader(): ?callable
Get external entity loader previously installed by libxml_set_external_entity_loader().
This function has no parameters.
The external entity loader previously installed by libxml_set_external_entity_loader(). If that function was never called, or if it was called with null, null will be returned.
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https://www.php.net/manual/en/function.libxml-get-external-entity-loader.php