gzencode php到objective c nsdata

Question

My question is similar to here:

iPhone and GZip

only, I get no result.

I gzipped the data in PHP:

$gztext = gzcompress($text,9);
var_dump(base64_encode($gztext));

and tried to decode in iOS:

NSString *encodedGzippedString = @"K0ktLlFIzSspqlTQ09MDYTCloKcApWEEGBkaGZuYAAA=";
NSData *decodedGzippedData     = [NSData dataByBase64DecodingString:encodedGzippedString];
NSData *unGzippedJsonData = [decodedGzippedData gzipInflate];
if(unGzippedJsonData){
    NSString* unGzippedJsonString  = [[NSString alloc] initWithData:unGzippedJsonData encoding:NSASCIIStringEncoding];       
    if(unGzippedJsonString)
         NSLog(@"Result: %@", unGzippedJsonString);
    else
       NSLog(@"string error");
}
else NSLog(@"gzip error");

The result is "gzip error"

Answer 1

This works as expected:

NSString* base64Str = @"eJwrSS0uUShJrQARxSUAKVwFhg==";
NSData* gzData = [NSData dataFromBase64String:base64Str];
NSData* flatData = [gzData gzipInflate];
NSString* result = [NSString stringWithUTF8String:(const char*) flatData.bytes];

With NSData+Base64 and NSData+Compression categories