why i could not print value?

Hi:
why my following code could not print out value?


$mystring="nationalize running going";

$mystr = split(" ",$mystring);
$max=sizeof($mystr);

$i=0;
while($i<$max){
echo $mystr[i];
$i++;
}

You should be getting an error. You used i in your while loop instead of $i.
echo $mystr[$i];
Turn on error_reporting in the development stage. Put this at the top of your php.
error_reporting(E_ALL);

You should be getting an error. You used i in your while loop instead of $i.
echo $mystr[$i];
Turn on error_reporting in the development stage. Put this at the top of your php.
error_reporting(E_ALL);

Thanks a lot.