Converting NSData to NSArray

Perdafircax · July 2012

Hi,

I'm creating an application which calls data from a MySQL Database.
I've created php files to use to get the information.

Xcode implementation file:

NSString *strURL = [NSString stringWithFormat:@"http://localhost/getCountryArray.php];

// to execute php code
NSData *dataURL = [NSData dataWithContentsOfURL:[NSURL URLWithString:strURL]];

// to receive the returend value
NSString *strResult = [[NSString alloc] initWithData:dataURL encoding:NSUTF8StringEncoding];

The above works, but if i change the results i want to an array, it won't work.
My code is as follows:

NSArray *arrResult = [NSKeyedUnarchiver unarchiveObjectWithData:dataURL];

My call statement in my PHPfile is as follows:

$sql="SELECT Category FROM Interest_Category";
$result=mysql_query($sql);

while($row = mysql_fetch_object($result))
{
echo $row->Category;
}

Any help would be appreciated!

Duncan C · July 2012

Perdafircax;440847 said:
Hi,

I'm creating an application which calls data from a MySQL Database.
I've created php files to use to get the information.

Xcode implementation file:

NSString *strURL = [NSString stringWithFormat:@"http://localhost/getCountryArray.php];

// to execute php code
NSData *dataURL = [NSData dataWithContentsOfURL:[NSURL URLWithString:strURL]];

// to receive the returend value
NSString *strResult = [[NSString alloc] initWithData:dataURL encoding:NSUTF8StringEncoding];

The above works, but if i change the results i want to an array, it won't work.
My code is as follows:

NSArray *arrResult = [NSKeyedUnarchiver unarchiveObjectWithData:dataURL];

My call statement in my PHPfile is as follows:

$sql="SELECT Category FROM Interest_Category";
$result=mysql_query($sql);

while($row = mysql_fetch_object($result))
{
echo $row->Category;
}

Any help would be appreciated!

You can only convert data to an array using NSKeyedUnarchiver if the data was created using NSKeyedArchiver. Otherwise it won't work, and there's no way to make it work.

Now, the Core Foundation library that creates property lists is available in a PHP version. You could convert an array to a property list in PHP, send that to iOS, and convert it back to an array.

RickSDK · July 2012

the easiest way to accomplish this is add a record deliminator when outputing, like this:

echo $row->Category."|";

and then convert your string to array like this:

NSArray *list = [strResult componentsSeparatedByString:@"|"];

Duncan C · July 2012

RickSDK;440856 said:
the easiest way to accomplish this is add a record deliminator when outputing, like this:

echo $row->Category."|";

and then convert your string to array like this:

NSArray *list = [strResult componentsSeparatedByString:@"|"];

Good point. Keep it simple.

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Converting NSData to NSArray

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