PHP XML and arrays to convert each instance to a detailed

This article mainly introduces the PHP XML and arrays to each other to translate the relevant information, the need for friends can refer to the following

PHP XML and Arrays convert each other

Array to XML  function Arraytoxml ($arr)  {    $xml = "<xml>";    foreach ($arr as $key = + $val)    {      if (is_numeric ($val)) {        $xml. = "<". $key. " > ". $val." </". $key." > ";      } else{         $xml. = "<". $key. " ><! [cdata[]. $val. "] ></". $key." > ";      }    }    $xml. = "</xml>";    return $xml;  }  Convert XML to array  function Xmltoarray ($xml)  {      //disallow referencing of external XML entity    Libxml_disable_entity_loader (true);    $values = Json_decode (Json_encode (simplexml_load_string ($xml, ' simplexmlelement ', Libxml_nocdata)), true);        return $values;  }

Five pre-defined entities in the XML file:

<	<	Less than sign
>	>	Greater than sign
&	&	And
'	'	Single quotation marks
"	"	Double quotes

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