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<?php function Recurse1($xml) { foreach ($xml->children() as $child) { if (is_iterable($child)) { if (!isset($array)) { $array = Recurse1($child); } else { $array = array_merge($array, Recurse1($child)); } } else { $array[] = (string)$xml['role']; } } 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 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
Warning: Undefined variable $array in /in/Q1n9j on line 16 Warning: Undefined variable $array in /in/Q1n9j on line 16 NULL
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 Warning: Undefined variable $array in /in/Q1n9j on line 16 Warning: Undefined variable $array in /in/Q1n9j on line 16 NULL
Output for 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: array in /in/Q1n9j on line 16 Notice: Undefined variable: array in /in/Q1n9j on line 16 NULL
Output for 7.3.32 - 7.3.33
NULL
Output for 5.6.38
Fatal error: Call to undefined function is_iterable() in /in/Q1n9j on line 6
Process exited with code 255.
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