problem in generating XML file

[tanveer]

Hi,

I am using php to generate an xml file of the following structure

<?xml version="1.0" encoding="UTF-8"?>

<!--  An excerpt of an egocentric social network  -->

<graphml xmlns="http://graphml.graphdrawing.org/xmlns">

<graph edgedefault="directed">



<!-- data schema -->

<key id="name" for="node" attr.name="name" attr.type="string"/>

<key id="gender" for="node" attr.name="gender" attr.type="string"/>



  

<!-- nodes -->  

<node id="1">

<data key="name">Jeff</data>

<data key="gender">M</data>

</node>

<node id="2">

<data key="name">Ed</data>

<data key="gender">M</data>

</node>

<node id="3">

<data key="name">Christiaan</data>

<data key="gender">M</data>

</node>

<node id="4">

<data key="name">Emily</data>

<data key="gender">F</data>

</node>

<node id="5">

<data key="name">Adam</data>

<data key="gender">M</data>

</node>

<!-- emily's friends -->

<edge source="1" target="2"></edge>

<!-- adam's friends -->

<edge source="2" target="3"></edge>

<!-- cynthia's friends -->

<edge source="3" target="4"></edge>

<!-- joylette's friends -->

<edge source="4" target="5"></edge>

<!-- amanda's friends -->

<edge source="5" target="1"></edge>

<edge source="5" target="2"></edge>
<edge source="5" target="3"></edge>

<edge source="5" target="4"></edge>



</graph>

</graphml>

 

and below is my code:

	public function createXML($resultID){


	header("Content-type: text/xml");
	$xml_output  = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
	$xml_output .= "<graphml xmlns=\"http://graphml.graphdrawing.org/xmlns\">\n";
        $xml_output .= "<graph edgedefault=\"directed\">\n";

	$xml_output .= "<key id=\"name\" for=\"node\" attr.name=\"sender\" attr.type=\"string\"/>\n";

	for($x = 1 ; $x < mysql_num_rows($resultID) ; $x++){
		$row = mysql_fetch_assoc($resultID);
		$xml_output .= "\t<node id=$x>\n";
		$xml_output .= "\t\t<data key=\"name\">" . $row['sender'] . "</data>\n";
		$xml_output .= "\t</node>\n";
	}

	$xml_output .= "</graph>\n";
	$xml_output .= "</graphml>";

	echo $xml_output;

}


}

$snxml = new SocialNetworkXML;
$holdResult = $snxml->setQuery("select sender from message1");
$snxml->createXML($holdResult);

 

But in browser its giving me this message:

XML Parsing Error: not well-formed
Location: http://localhost/........./SocialNetXML.class.php
Line Number 5, Column 11:	<node id=1>
-----------------^

 

What am I doing wrong here ? thanks in advance.

 

[salathe]

The error points you right at the location of the problem (between the equals sign, and the 1).  In XML, attributes must be wrapped in quotes (single or double, it doesn't matter). So, your resulting XML needs to look like: <node id="1">

[tanveer]

Thanks, it solved as u said the problem was on Quoting.