$msg = ['test'=>23];
$start = microtime(true); 
for($i=0;$i<100000;$i++){
  $packMsg = msgpack_pack($msg);
}
echo 'pack len:'.strlen($packMsg)."\r\n";
$end = microtime(true);
echo 'run time:'.($end-$start).'s'."\r\n"; 
echo 'memory usage:'.(memory_get_usage()/1024)."KB\r\n";
/*
$start = microtime(true); 
for($i=0;$i<100000;$i++){
  $jsonMsg = json_encode($msg);
}
echo 'json len:'.strlen($jsonMsg)."\r\n";
$end = microtime(true); 
echo 'run time:'.($end-$start).'s'."\r\n"; 
echo 'memory usage:'.(memory_get_usage()/1024)."KB\r\n";

$start = microtime(true); 
for($i=0;$i<100000;$i++){
  $packMsg = serialize($msg);
}
echo 'php len:'.strlen($packMsg)."\r\n";
$end = microtime(true);
echo 'run time:'.($end-$start)."s\r\n";
echo 'memory usage:'.(memory_get_usage()/1024)."KB\r\n";*/

pack len:7
run time:0.024219989776611s
memory usage:354.4765625KB
json len:11
run time:0.010890007019043s
memory usage:354.1796875KB
php len:22
run time:0.010586977005005s
memory usage:353.8828125KB

运行速度 serialize<json<msgpack
长度  serialize>json>msgpack
内存消耗 serialize<json<msgpack //不过近乎一致

运行速度 serialize<msgpack<json  //这里出现了变化
长度  serialize>json>msgpack
内存消耗 serialize<json<msgpack //不过近乎一致