xml - PHP SimpleXML Children Node Data Extract -

i have been trying extract node data's children using foreach loop. can main node data without problems, child data gets first data set repeats. can maybe tell me doing wrong? got example going offical documentation: http://php.net/manual/en/simplexmlelement.children.php

this test xml

<result> <result_data>     <root_xml>         <stock>             <stock_code>28</stock_code>             <barcode>28</barcode>             <multiple_barcodes>                 <barcode>barcode1</barcode>                 <barcode>barcode2</barcode>             </multiple_barcodes>             <sell_prices>                 <sell_price>                     <inclusive>10</inclusive>                     <exclusive>8.77193</exclusive>                 </sell_price>                 <sell_price>                     <inclusive>0</inclusive>                     <exclusive>0</exclusive>                 </sell_price>                 <sell_price>                     <inclusive>0</inclusive>                     <exclusive>0</exclusive>                 </sell_price>             </sell_prices>             <new_prices>                 <new_price>0</new_price>                 <new_price>0</new_price>                 <new_price>0</new_price>                 <new_price>0</new_price>             </new_prices>             <work_in_progress_quantity>0</work_in_progress_quantity>             <extended_description />             <onhand>0</onhand>         </stock>         <stock>             <stock_code>123</stock_code>             <barcode>123</barcode>             <multiple_barcodes>                 <barcode>barcode123</barcode>                 <barcode>barcode124</barcode>             </multiple_barcodes>             <sell_prices>                 <sell_price>                     <inclusive>10</inclusive>                     <exclusive>8.77193</exclusive>                 </sell_price>                 <sell_price>                     <inclusive>0</inclusive>                     <exclusive>0</exclusive>                 </sell_price>                 <sell_price>                     <inclusive>0</inclusive>                     <exclusive>0</exclusive>                 </sell_price>             </sell_prices>             <new_prices>                 <new_price>0</new_price>                 <new_price>0</new_price>                 <new_price>0</new_price>                 <new_price>0</new_price>             </new_prices>             <work_in_progress_quantity>0</work_in_progress_quantity>             <extended_description />             <onhand>0</onhand>         </stock>                 </root_xml> </result_data> 

this php code

$file = file_get_contents('play.xml', true);   $xmltosave = new simplexmlelement($file); foreach ($xmltosave->result_data->root_xml->stock $element) { echo $element->stock_code . "\n";      //child node data - barcode     foreach ($xmltosave->result_data->root_xml->stock->multiple_barcodes $element) {     echo $element->barcode . "\n";     }   }    

this output:

28

barcode1

123

barcode1

expected output:

28

barcode1

barcode2

123

barcode123

barcode124

in inner loop use foreach ($element->multiple_barcodes->barcode $barcode) { echo $barcode; }.