ti posto la pagina php

<?php
$arrJson=array();
$url=$_GET['url'];
$file = file($url);
$file=str_replace("\r\n", "", $file);

for($i=0;$i<count($file);$i++){
$riga=explode("<",$file[$i]);
if($riga[0]=="<li"){

$tmp=explode(">",$riga[1]);
$tmp1=explode("<",$tmp[1]);
$data=$tmp1[0];

$tmp2=explode(">",$riga[2]);
$tmp3=explode("<",$tmp2[1]);
$luogo=$tmp3[0];

$tmp4=explode(">",$riga[3]);
$tmp5=explode("<",$tmp4[1]);
$evento=$tmp5[0];

$arrJson[$i]=$data.','.$luogo.','.$evento;
}
}
$encodedJson = json_encode($arrJson);
echo $encodedJson;
?>