-(int)getRatings:(int)idNo
{
NSString *urlString = [NSString stringWithFormat:@"http://www.website.com/rating-grab.php"];
NSURL *url = [NSURL URLWithString:urlString];
NSData *data = [NSData dataWithContentsOfURL:url];
NSError *error;
NSMutableArray *json = (NSMutableArray*)[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
NSLog(@"json output \n: %@ \n",json);
NSLog(@"______________\n”);
/// not sure how to access the value
NSLog(@"object at: %@\n",[json objectAtIndex:0]);
}
----- php内
// How to output values of more than one column at a time?
$sth = mysql_query("SELECT AVG(overall) FROM votes WHERE idNo=1");
$rows = array();
while($r = mysql_fetch_assoc($sth)) {
$rows[] = $r;
}
echo json_encode($rows);
php output [{"AVG(overall)":"5.00000”}]
Xcode output
json output
: (
{
"AVG(overall)" = "5.00000";
}
)
2012-04-17 15:54:12.202
各列の平均を変数として保存できるようにしたい。私は近づいているようです (確かに最も効率的な方法ではありません)。