iOS php json service - format?

I have an iOS app that runs this code:

userDict = [[NSDictionary alloc] initWithDictionary:[SantiappsHelper fetchInfoForUDID:@"1"]];

which goes to call this class:

(NSDictionary*)fetchInfoForUDID:(NSString *)udid{ NSString *urlString = [NSString stringWithFormat:@"http://www.server.com/app/getusers.php"]; NSLog(@"This is the urlString from (fetchInfoForUDID) SantiappsHelper:%@",urlString); NSURL *url = [NSURL URLWithString:urlString]; return [self fetchJSONValueForURL:url]; }

which is part of the SantiappsHelper class that also contains:

+ (id)fetchJSONValueForURL:(NSURL *)url{
    NSString *jsonString = [[NSString alloc] initWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];

    id jsonValue = [jsonString JSONValue];
    NSLog(@"This is the string presented:%@",jsonString);
    [jsonString release];

    return jsonValue; //this is the line where it crashes
}

The php page contains this code:

<?php

include_once("JSON.php");
$json = new Services_JSON();

$link = mysql_pconnect("localhost", "user", "pw") or die("Could not connect");
mysql_select_db("iglobe") or die("Could not select database");

$query = "SELECT * FROM tags";

$arr = array();
$rs = mysql_query("SELECT * FROM tags");

while($obj = mysql_fetch_object($rs)) {
 $arr[] = $obj;
}
Echo $json->encode($arr);
?>

And returns this as a result:

[
{"tagID":null,"originudid":"269d4008ba6575b9ec51a7f3237e757c2bcd6bf6","destintyudid":"1","latitude":"37.3317","longitude":"-122.031","date":"2010-02-23 11:44:11"},
{"tagID":null,"originudid":"F6869FB45D456859679808908967967007646764","destintyudid":"","latitude":"37.3317","longitude":"-122.031","date":"2010-02-23 15:25:04"},
{"tagID":null,"originudid":"2031aafb778b3a27635ae38e4315f31bba956805","destintyudid":"","latitude":"15.4778","longitude":"-88.0068","date":"2010-06-09 11:17:27"},
{"tagID":null,"originudid":"adf03902c18974c9d29edf27da779afa66438a3b","destintyudid":"","latitude":"15.5017","longitude":"-88.0355","date":"2010-09-11 21:21:22"},
{"tagID":null,"originudid":"2031aafb778b3a27635ae38e4315f31bba956805","destintyudid":"","latitude":"15.4778","longitude":"-88.0068","date":"2010-06-09 11:18:45"}
]

but the app crashes with this error:

[__NSArrayM getObjects:andKeys:]: unrecognized selector sent to instance 0x6e579f0

I dont understand why its crashing. Its right before or when returning the jsonValue to the fetchInfoForUDID method that it crashes. Its returning the php-json created object to the fetchInfoForUDID method. This is a dictionary return value so why is the __NSarrayM getObjects:andKeys: being called?

ansaurus

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iOS php json service - format?

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