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<?php function Recurse1($xml) { $array = [(string)$xml['role']]; foreach ($xml->children() as $child) { $array = array_merge($array, Recurse1($child)); } return $array; } $xml = new SimpleXMLElement( '<person> <child role="son1"> <child role="daughter1"/> </child> <child role="daughter2"> <child role="son2"> <child role="son3"/> </child> </child> </person>'); var_dump(Recurse1($xml));
Output for 5.6.38, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
array(6) { [0]=> string(0) "" [1]=> string(4) "son1" [2]=> string(9) "daughter1" [3]=> string(9) "daughter2" [4]=> string(4) "son2" [5]=> string(4) "son3" }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(6) { [0]=> string(0) "" [1]=> string(4) "son1" [2]=> string(9) "daughter1" [3]=> string(9) "daughter2" [4]=> string(4) "son2" [5]=> string(4) "son3" }

preferences:
168.62 ms | 406 KiB | 207 Q