Blank response in XML WebService

PHP
1

Hi

I am trying to create a webservice that would output either in JSON or XML format depending on the user’s choice.

I problem comes when I am sending a boolean datatype to the user in XML format.

When the datatype is true, it sends the following:


<?xml version='1.0' encoding='UTF-8'?> 
<output> 
 <result>1</result> 
</output>

But when the datatype is false, it sends blank value under <result>:


<?xml version='1.0' encoding='UTF-8'?> 
<output> 
 <result></result> 
</output>

But it works well when the format is JSON:

In case of true:

{"result":true}

In case of false:

{"result":false}

Here is my code that generates XML or JSON:


			
			$mode = 'XML'; //Change to XML or JSON
			
            $return = array(
                'result' => true
            );		
            	
            if('XML' == $mode){
		        //XML	
		        print "<?xml version='1.0' encoding='UTF-8'?>\
";
		        print "<output>\
";
		        foreach ($return as $element => $content) {
		           print "<$element>";
		           print $content;
		           print "</$element>\
";
		        }
		        print "</output>";
		        exit();  
		                  
            }else{
				//JSON
				echo(json_encode($return) );die;            
            }

Can someone please help me understand this mystery?

Thanks

2

Let’s do a little exercise: Please run the following code and have a look at what happens:


echo true;
echo false;
3