json_serialize.php

<?php

header("Content-Type: text/plain");

$dataIn = (object)array(
	"string" => "value 1",
	"array" => array(1,2,3),
	"assoc" => array("cow"=>"moo","dog"=>"woof"),
	"object" => (object)array("cat"=>"miao","pig"=>"oink"),
);

print "------ Data IN\n";
var_dump($dataIn);

print "\n------ JSON Representation\n";
$json = json_serialize($dataIn);
print $json;

print "\n\n------ Data OUT\n";
$dataOut = json_unserialize($json);
var_dump($dataOut);

function json_serialize($any) {
	return json_encode(json_wrap($any));
}

function json_unserialize($str) {
	return json_unwrap(json_decode($str));
}

function json_wrap($any, $skipAssoc = false) {
	if (!$skipAssoc && is_array($any) && is_string(key($any))) {
		return (object)array("_PHP_ASSOC" => json_wrap($any,true));
	}
	if (is_array($any) || is_object($any)) {
		foreach ($any as &$v) {
			$v = json_wrap($v);
		}
	}
	return $any;
}

function json_unwrap($any, $skipAssoc = false) {
	if (!$skipAssoc && is_object($any) && is_object($any->_PHP_ASSOC) && count((array)$any) == 1) {
		return (array)json_unwrap($any->_PHP_ASSOC);
	}
	if (is_array($any) || is_object($any)) {
		foreach ($any as &$v) {
			$v = json_unwrap($v);
		}
	}
	return $any;
}



print "\n\n------ Benchmarks\n";
gauge("json_serialize", 1000, function() use ($dataIn) {
	json_serialize($dataIn);
});
gauge("json_unserialize", 1000, function() use ($json) {
	json_unserialize($json);
});
gauge("json_encode", 1000, function() use ($dataIn) {
	json_encode($dataIn);
});
gauge("json_decode", 1000, function() use ($json) {
	json_decode($json);
});

function gauge($label, $times, $callback) {
	$tstart = microtime(true);
	for ($i=0; $i<$times; $i++) {
		$callback();
	}
	$tend = microtime(true);
	$took = ($tend-$tstart);
	print (ceil($took*1000)/1000)." to run $label run $times times\n";
}

?>

output.txt

------ Data IN
object(stdClass)#2 (4) {
  ["string"]=>
  string(7) "value 1"
  ["array"]=>
  array(3) {
    [0]=>
    int(1)
    [1]=>
    int(2)
    [2]=>
    int(3)
  }
  ["assoc"]=>
  array(2) {
    ["cow"]=>
    string(3) "moo"
    ["dog"]=>
    string(4) "woof"
  }
  ["object"]=>
  object(stdClass)#1 (2) {
    ["cat"]=>
    string(4) "miao"
    ["pig"]=>
    string(4) "oink"
  }
}

------ JSON Representation
{"string":"value 1","array":[1,2,3],"assoc":{"_PHP_ASSOC":{"cow":"moo","dog":"woof"}},"object":{"cat":"miao","pig":"oink"}}

------ Data OUT
object(stdClass)#4 (4) {
  ["string"]=>
  string(7) "value 1"
  ["array"]=>
  array(3) {
    [0]=>
    int(1)
    [1]=>
    int(2)
    [2]=>
    int(3)
  }
  ["assoc"]=>
  array(2) {
    ["cow"]=>
    string(3) "moo"
    ["dog"]=>
    string(4) "woof"
  }
  ["object"]=>
  object(stdClass)#7 (2) {
    ["cat"]=>
    string(4) "miao"
    ["pig"]=>
    string(4) "oink"
  }
}


------ Benchmarks
1.057 to run json_serialize run 1000 times
0.038 to run json_unserialize run 1000 times
0.324 to run json_encode run 1000 times
0.009 to run json_decode run 1000 times