Print_r line bug ? \n? - php

Question

I have this OUTPUT array from Decode function down:
Array ( [
] =>
[HostName] => Survival4fun
[GameType] => SMP
[Version] => 1.5.2
[Plugins] => Array
(
[0] => WorldEdit
)
[Map] => world
[Players] => 0
[MaxPlayers] => 10
[HostPort] => 25608
[HostIp] => 31.133.13.99
[RawPlugins] => WorldEdit5.5.6;
[Software] => CraftBukkitonBukkit1.5.2-R0.1
[Status] => online
[Ping] => 15ms
[
] =>
[PlayersOnline] => Array
(
[P0] => NoPlayers
)
[
] => )
And so, you can see this:
[
] =>
How can I remove it ? I tried using str_replace("\n", "", $arr); But this doesn't work.
Here is the original array - http://status.mc-host.cz/s8.mc-host.cz:25608-feed
And here is my function code:
Function Decode_query($link) {
$data = file($link, FILE_IGNORE_NEW_LINES);
$arr = array();
$string = array("[", "]", " ", "(", ")", "Array", "\n", "\r");
$replace = array("", "", "", "", "", "", "", "");
ForEach ($data as $line) {
$s = str_replace($string, $replace, $line);
If (Empty($s)) {} Else {
$stat = explode("=>", $s);
$P = str_replace("P", "", $stat[0]);
If (is_numeric($stat[0])) {
$arr["Plugins"][$stat[0]] = $stat[1];
}
ElseIf (is_numeric($P)) {
$arr['PlayersOnline'][$stat[0]] = $stat[1];
} Else {
$arr[$stat[0]] = $stat[1];
}
}
}
Return $arr;
}
$arr = Decode_query("http://status.mc-host.cz/s8.mc-host.cz:25608-feed");
Print_r($arr);
Thanks for help and sorry for long question..

Answer 1

You could use a regex to scan for keys that are composed of only whitespace:
$keys = array_keys($your_array);
$blank_keys = preg_grep('/^\s*$/', $keys);
foreach($blank_keys as $blank) {
unset($your_array[$blank]);
}

Answer 2

I would work with trim in stead of str_replace. It is less expensive, and it takes care of the trailing spaces and whatever whitespace there may be. In your case your function would probably look something like this:
Function Decode_query($link) {
// fetch the data
$data = file($link, FILE_IGNORE_NEW_LINES);
// prepare output array
$arr = array('Plugins' => array(), 'PlayersOnline' => array());
// prepare the list of characters we want to remove
$removeChars = ' \t\n\r[]';
ForEach ($data as $line) {
// split line into key, value
$stat = explode("=>", $line);
// no 2 elements, means no '=>', so ignore line
if (count($stat) < 2) continue;
// remove unwanted characters from key
$trimmed = trim($stat[0], $removeChars);
$pTrimmed = trim($trimmed, 'P');
// if key = plugins, ignore line
if ($trimmed == 'Plugins') continue;
// if key is numeric
If (is_numeric($trimmed)) {
// store in plugins subarray
$arr['Plugins'][$trimmed] = trim($stat[1]);
}
// if (key - P) is numeric
ElseIf (is_numeric($pTrimmed)) {
// store in players online subarray
$arr['PlayersOnline'][$pTrimmed] = trim($stat[1]);
} Else {
// all others store in level 1 array
$arr[$trimmed] = trim($stat[1]);
}
}
Return $arr;
}
I didn't test the code, but I think it should work fine.
PS: You can never put enough comments in your code, may seem a waste of time at first, but you, or anyone who has to work on your code, will be very grateful some day...