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<?php $xml = <<<HERE <!DOCTYPE dtd [ <!ENTITY ref "ent"> ]> <elt att="&ref;">a&ref;</elt> HERE; $parser = xml_parser_create(); xml_set_character_data_handler($parser, function ($parser, $data) { var_dump($data); }); // xml_set_default_handler($parser, function () {}); xml_parse($parser, $xml, true); xml_parser_free($parser);
Output for 5.6.38, 7.1.0 - 7.1.22, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
string(1) "a" string(3) "ent"

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150.75 ms | 407 KiB | 5 Q