How to parse xml into a two-dimensional array through php

& Lt ;? Xmlversion = & quot; 1.0 & quot; encoding = & quot; UTF-8 & quot ;? & Gt; & lt; config & gt; & lt; db & gt; & lt; servicer & gt; localhost1 & lt;/servicer & gt; & lt; root & gt; root & lt;/root & gt; Localhost1 Root 123 Load ("config. xml "); $ roots = $ doc-> documentElement; // get the root node, that is, config (only one) $ childs = $ roots-> childNodes; // obtain all the child nodes under the root node, namely db smartyfor ($ I = 0; $ I <$ childs-> length; $ I ++) {// cyclically store the array $ config_item = $ childs-> item ($ I) according to the number of subnodes under the root node ); // Obtain the db smarty $ configs [$ config_item-> nodeName] = array (); // store the names of the db smarty subnodes as data in the array $ items = $ config_item-> childNodes; // Obtain all child nodes in the database smarty for ($ j = 0; $ j <$ items-> length; $ j ++) {// cyclically store the names and values of child nodes in db smarty into two-dimensional arrays according to the number of child nodes in db smarty $ item = $ items-> item ($ j ); // cyclically obtain the subnode $ configs [$ config_item-> nodeName] [$ item-> nodeName] = $ item-> nodeValue;} under each db smarty ;} // writing a two-dimensional array} var_dump ($ configs );