How do you convert keys from major to minor?

How can I convert particular array keys to numeric?

• The following code converts an array to a XML string and vice versa. In the process of converting the array to XML, it converts numeric keys to have the prefix of double underscores since XML does not allow numbers to be a tag. The problem is that when converting back to an array, it does not revert the prefixed numeric keys. Is it possible to remove them and to have pure numeric keys? <?php $array = array( array( 'a' => 'aaa', 'b' => array( array( 'a' => 'aaaa', ), array( 'a' => 'aaaa', 'b' => 'bbbb', ), ) ), array( 'a' => 'abc', 'b' => array( array( 'c' => 'cccc', ), array( 'b' => 'bbbb', 'd' => array( 'a', 'b', 'c', 'd' ) ) ) ) ); Array2XML( $array, $oSimpleXML ); XML2Array( $oSimpleXML->asXML(), $xml_array ); echo '<pre>' . print_r( $array, true ) . '</pre>'; echo '<pre>' . print_r( $xml_array, true ) . '</pre>'; function Array2XML( $arr, &$oSimpleXML ) { if ( !is_object( $oSimpleXML ) ) $oSimpleXML = new SimpleXMLElement("<?xml version=\"1.0\"?><root></root>"); foreach( $arr as $key => $value ) { if ( is_array( $value ) ) { $node = $oSimpleXML->addChild( is_numeric( $key ) ? "__$key" : "$key" ); Array2XML( $value, $node ); continue; } $oSimpleXML->addChild( is_numeric( $key ) ? "__$key" : "$key", "$value" ); } } function XML2Array( $xml, &$array ) { $array = json_decode( json_encode( ( array ) simplexml_load_string( $xml ) ), 1 ); }

• Answer:

  Hi there, http://stackoverflow.com/questions/3808602/recursively-replace-keys-in-an-array Just tested it, looks like it'll work for you! A