Tricky question. Arrays and json_encode

Question

Good day. There is a simple function:

public function exec () { $arr = array(); for($i = 0; $i < 5000000; ++$i) $arr['a' . $i] = $i; return $arr; }

Do you think the generation and return time is normal for an array network previously processed with json_encode in 1.2 ~ 2 seconds?

PS note the array is associative.

Transfer is carried out by means of sockets .... from localhost by localhost.
Memory seems to be normal, but I was interested in time .... quickly, slowly ... xs :) PS The processor loads 10% when generating this array and processing json_encode If anyone is interested, I will describe in more detail how and what is done.

Stanislav Komar Stanislav Komar 1.608 13 27 · Answer 1 · 2012-04-09T23:44:14

Testing revealed:

Classic execution method:
Creation of the array has ceased critical error already at 601099 position. The generation time is 10.34519290924072
"Demonic" multiprocessor method:
Execution pleased. Only 1.5 ~ 2 seconds for 6.000.000 elements + transmission over the network (instantly)

Regarding memory.

The standard method (Apache + Browser) .... !! By the way, I did not output anything to the browser, I just created an array !! brazenly took all my memory from me and ate 80% of the process .... so it also collapsed.
"Demonic" - gobbled up less than 15-10% and about 60MB of memory. After that, the memory was instantly cleared.

Total Total. Yesterday there was someone saying that PHP demons are scary? :)) And I think that is very good :)

So you add to your demons full support for HTTP (s) / ftp / ssl, output caching and other Apache rolls - and look again.
And the point is to add server-side ctt (c) / ftp / ssl buns?

Answer 2 · 2012-04-09T23:11:40

Perhaps this is normal, if you need faster, then it is better to generate json yourself.

 $json='{'; foreach ($arr as $k=>$v)){ $json.="'".$k."':'".$v."',"; }; $json.='}';

2 answers 2