PHP Read Specific Value from API Response - php

Question

I have this bit of code:
<?php
#
# Sample Socket I/O to CGMiner API
#
function getsock($addr, $port)
{
$socket = null;
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket === false || $socket === null)
{
$error = socket_strerror(socket_last_error());
$msg = "socket create(TCP) failed";
echo "ERR: $msg '$error'\n";
return null;
}
$res = socket_connect($socket, $addr, $port);
if ($res === false)
{
$error = socket_strerror(socket_last_error());
$msg = "socket connect($addr,$port) failed";
echo "ERR: $msg '$error'\n";
socket_close($socket);
return null;
}
return $socket;
}
#
# Slow ...
function readsockline($socket)
{
$line = '';
while (true)
{
$byte = socket_read($socket, 1);
if ($byte === false || $byte === '')
break;
if ($byte === "\0")
break;
$line .= $byte;
}
return $line;
}
#
function request($cmd)
{
$socket = getsock('127.0.0.1', 4028);
if ($socket != null)
{
socket_write($socket, $cmd, strlen($cmd));
$line = readsockline($socket);
socket_close($socket);
if (strlen($line) == 0)
{
echo "WARN: '$cmd' returned nothing\n";
return $line;
}
print "$cmd returned '$line'\n";
if (substr($line,0,1) == '{')
return json_decode($line, true);
$data = array();
$objs = explode('|', $line);
foreach ($objs as $obj)
{
if (strlen($obj) > 0)
{
$items = explode(',', $obj);
$item = $items[0];
$id = explode('=', $items[0], 2);
if (count($id) == 1 or !ctype_digit($id[1]))
$name = $id[0];
else
$name = $id[0].$id[1];
if (strlen($name) == 0)
$name = 'null';
if (isset($data[$name]))
{
$num = 1;
while (isset($data[$name.$num]))
$num++;
$name .= $num;
}
$counter = 0;
foreach ($items as $item)
{
$id = explode('=', $item, 2);
if (count($id) == 2)
$data[$name][$id[0]] = $id[1];
else
$data[$name][$counter] = $id[0];
$counter++;
}
}
}
return $data;
}
return null;
}
#
if (isset($argv) and count($argv) > 1)
$r = request($argv[1]);
else
$r = request('summary');
#
echo print_r($r, true)."\n";
#
?>
Which outputs this information:
summary returned 'STATUS=S,When=1399108671,Code=11,Msg=Summary,Description=cgminer 4.3.0hf|SUMMARY,Elapsed=531,MHS av=453052.33,MHS 5s=537024.44,MHS 1m=458922.01,MHS 5m=375184.88,MHS 15m=201623.38,Found Blocks=0,Getworks=16,Accepted=518,Rejected=12,Hardware Errors=271,Utility=58.54,Discarded=276,Stale=0,Get Failures=0,Local Work=65806,Remote Failures=0,Network Blocks=1,Total MH=240524241.0000,Work Utility=5589.33,Difficulty Accepted=49008.00000000,Difficulty Rejected=448.00000000,Difficulty Stale=0.00000000,Best Share=93465,Device Hardware%=0.5450,Device Rejected%=0.9059,Pool Rejected%=0.9059,Pool Stale%=0.0000,Last getwork=1399108671|'
Array
(
[STATUS] => Array
(
[STATUS] => S
[When] => 1399108671
[Code] => 11
[Msg] => Summary
[Description] => cgminer 4.3.0
)
[SUMMARY] => Array
(
[0] => SUMMARY
[Elapsed] => 531
[MHS av] => 453052.33
[MHS 5s] => 537024.44
[MHS 1m] => 458922.01
[MHS 5m] => 375184.88
[MHS 15m] => 201623.38
[Found Blocks] => 0
[Getworks] => 16
[Accepted] => 518
[Rejected] => 12
[Hardware Errors] => 271
[Utility] => 58.54
[Discarded] => 276
[Stale] => 0
[Get Failures] => 0
[Local Work] => 65806
[Remote Failures] => 0
[Network Blocks] => 1
[Total MH] => 240524241.0000
[Work Utility] => 5589.33
[Difficulty Accepted] => 49008.00000000
[Difficulty Rejected] => 448.00000000
[Difficulty Stale] => 0.00000000
[Best Share] => 93465
[Device Hardware%] => 0.5450
[Device Rejected%] => 0.9059
[Pool Rejected%] => 0.9059
[Pool Stale%] => 0.0000
[Last getwork] => 1399108671
)
)
How can I get a specific value? For example, how can I output only '[MHS 15m]'

Answer 1

if $res is the variable containing the array you can get the value as
echo $res['SUMMARY']['MHS 15m'];