<?php   
        header('content-type:application/json;charset=utf8');   
        $arr = array('1','2','asda');  
        $json = json_encode($arr);  
        echo $json;  
    ?>  

<?php   
    header('content-type:text/xml;charset=utf8');   
    $url = 'http://www.web.com/json.php';  
    $file = file_get_contents($url);  
    $arr = json_decode($file,true);  
    $xml = '<?xml version="1.0" encoding="utf-8"?>';  
    $xml.= '<root>';  
    foreach ($arr as $key => $value) {  
        $xml.= '<a'.$key.'>'.$value.'</a'.$key.'>';  
    }  
    $xml.= '</root>';  
    echo $xml;  
?> 
 

<?php    
        header('content-type:application/json;charset=utf8');  
        $url = 'http://www.web.com/xml.php';  
        $file = simplexml_load_file($url);  
        $json = json_encode($file);  
        $jsoncallback = htmlspecialchars($_GET['jsoncallback']);  
        echo $jsoncallback.'('.$json.')';  
    ?>  


    <script src="./jq.js"></script>  
    <script>  
        $.getJSON('http://www.web.com/jsonp.php?jsoncallback=?',function(msg){  
           var html='<table border="1">';
       for(var i=0;i<msg.length;i++){
      html+='<tr>';
        html+='<td>'+msg[i]['title']+'</td>';
       html+='<td>'+msg[i]['content']+'</td>';
      html+='<td>'+msg[i]['time']+'</td>';
       }
     html+='</tr></table>';
      $('#list').html(html)
        });  
    </script>  
    <div id="list"></div>