Is there a easier/better way to get every second hour than this
if(date("H")=='00'){$chart_updates = '|02|04|06|08|10|12|14|16|18|20|22|00';}
if(date("H")=='01'){$chart_updates = '|03|05|07|09|11|13|15|17|19|19|23|01';}
if(date("H")=='02'){$chart_updates = '|04|06|08|10|12|14|16|18|20|21|00|02';}
if(date("H")=='03'){$chart_updates = '|05|07|09|11|13|15|17|19|21|23|01|03';}
if(date("H")=='04'){$chart_updates = '|06|08|10|12|14|16|18|20|22|00|02|04';}
if(date("H")=='05'){$chart_updates = '|07|09|11|13|15|17|19|21|23|01|03|05';}
if(date("H")=='06'){$chart_updates = '|08|10|12|14|16|18|20|22|00|02|04|06';}
if(date("H")=='07'){$chart_updates = '|09|11|13|15|17|19|21|23|01|03|05|07';}
if(date("H")=='08'){$chart_updates = '|10|12|14|16|18|20|22|00|02|04|06|08';}
if(date("H")=='09'){$chart_updates = '|11|13|15|17|19|21|23|01|03|05|07|09';}
if(date("H")=='10'){$chart_updates = '|12|14|16|18|20|22|00|02|04|06|08|10';}
if(date("H")=='11'){$chart_updates = '|13|15|17|19|21|23|01|03|05|07|09|11';}
if(date("H")=='12'){$chart_updates = '|14|16|18|20|22|00|02|04|06|08|10|12';}
if(date("H")=='13'){$chart_updates = '|15|07|19|21|23|01|03|05|07|09|11|13';}
if(date("H")=='14'){$chart_updates = '|16|08|20|22|00|02|04|06|08|10|12|14';}
if(date("H")=='15'){$chart_updates = '|17|09|21|23|01|03|05|07|09|11|13|15';}
if(date("H")=='16'){$chart_updates = '|18|20|22|00|02|04|06|08|10|12|16|16';}
if(date("H")=='17'){$chart_updates = '|19|21|23|01|03|05|07|09|11|13|15|17';}
if(date("H")=='18'){$chart_updates = '|20|22|00|02|04|06|08|10|12|14|16|18';}
if(date("H")=='19'){$chart_updates = '|21|23|01|03|05|07|09|11|13|15|17|19';}
if(date("H")=='20'){$chart_updates = '|22|00|02|04|06|08|10|12|14|16|18|20';}
if(date("H")=='21'){$chart_updates = '|23|01|03|05|07|09|11|13|15|17|19|21';}
if(date("H")=='22'){$chart_updates = '|00|02|04|06|08|10|12|14|16|18|20|22';}
if(date("H")=='23'){$chart_updates = '|01|03|05|07|09|11|13|15|17|19|21|23';}
I need this for google charts and wanted to check if this way is stupid.
1) take the current hour
2) mod2 (there are only two different sets of numbers, odd and even)
3) build array of hours
4) sort array by value
5) split array where the original hour was, and recombine.
$h = date("H");
$line = '';
for($i=0; $i<=24; $i++)
{
if($i % 2 == $h % 2)
$line .= '|' . ($i < 10 ? '0'.$i : $i);
}
One way is to create an array with keys:
$theHour['00'] = '|02|04|06|08|10|12|14|16|18|20|22|00';
Then you can call it like this:
$chart_updates = $theHour[date("H")];
There is also probably a better way to generate this too, but since you already typed it out, its there.. It would just suck if you want to make a change.
Nice code :)
There's actually much easier way to do this in php:
$chars = array();
$start = date("H")+2;
for( $i = 0; $i < 12; $i++){
$chars[] = str_pad( ($start+2*$i)%24, 2, '0', STR_PAD_LEFT);
}
$chart_updates = '|' . implode( '|', $chars);
function helper_add($h,$plus=0){
if($h+$plus > 23){
return $h+$plus-24;
}
return $h+$plus;
}
function helper_10($in){
return $in < 10 ? '0'.$in : $in;
}
function getchartupdates(){
$now = date('G');
for($i=($now%2==0?0:1); $i<=24 ;$i+=2)
$res[] = helper_10(helper_add($now,$i));
return '|'.implode('|',$res);
}
used this to test it !
Related
I'm working on a website for my friend's gaming clan. I'm trying to have a php code that takes the player's coordinates, loops over some known locations and print the name of the closest location.
I can't get it to work however. It always seems to want to print "Balota" which is index 1 in the array. I also noticed that the cosine function can't be working as all values are above 1.0.
But I'm completely stuck now. I think I've been beating my head over it for too long and its something right in front of me but I can't see it.
<?php
function DotProd($loc1,$loc2){
return array_sum(array_map(create_function('$a, $b', 'return $a * $b;'), $loc1, $loc2));
}
function CosineSim($loc1,$loc2){
return DotProd($loc2,$loc2)/sqrt(DotProd($loc1,$loc2)*DotProd($loc1,$loc2));
}
function Closest($loc){
$novo = array(11300,14300);
$balota = array(4500,2500);
$zelen = array(2500,5200);
$sever = array(7900,12600);
$vybor = array(4500,8200);
$nwaf = array(4500,10200);
$neaf = array(12100,12500);
$kamensk = array(7870,14600);
$bere = array(12900,10000);
$gorka = array(9600,8900);
$elektro = array(10100,2000);
$cherno = array(6600,2600);
$stary = array(6100,7700);
$novy = array(7000,7700);
$mysk = array(1100,7200);
$locations = array($novo,$balota,$zelen,$sever,$vybor,$nwaf,$neaf,
$kamensk,$bere,$gorka,$elektro,$cherno,$stary,$novy,$mysk);
$sim = 99999999999;
$locat = 0;
for($i = 14; $i >= 0; $i--){
$s = CosineSim($loc,$locations[$i]);
echo "<br>" . $i . " " . CosineSim($loc,$locations[$i]);
if($s < $sim){
$sim = $s;
$locat = $i;
}
}
$items = array("Novo","Balota","Zelenogorsk","Severograd","Vybor","NWAF","NEAF","Kamensk Military","Berezino",
"Gorka","Elektro","Cherno","Stary Sobor","Novy Sobor","Myshkino");
return $items[$locat];
}
$x = $_GET["xpos"];
$y = $_GET["ypos"];
$location = array($x,$y);
echo "<b>You are at " . $x . ":" . $y;
$index = Closest($location);
echo "<br>You're pretty close to ". $index . "<br>";
?>
I am using a distance calculation formula based on the link: https://www.mathwarehouse.com/algebra/distance_formula/index.php
I only changed CosineSim. The rest of the code remains the same. And you don't actually need DotProd. It's not elegant but it works for me.
function CosineSim($loc1,$loc2){
// sum of x coordinates
$x1 = ($loc1[0]-$loc2[0])*($loc1[0]-$loc2[0]);
// sum of y coordinates
$y2 = ($loc1[1]-$loc2[1])*($loc1[1]-$loc2[1]);
$summ = $x1 + $y2;
$sqrt_res = sqrt($summ);
return $sqrt_res;
}
If I enter something like:
You are at 4640:7205
...
You're pretty close to Vybor
Hope this helps!
I have problem with my variable, I wanna make variable like these
$H1,H2, until $h48
but I know is kinda difficult, so I wanna change to like these
$H[1],$H[2],$H[3] until $H[48]
these I try with my code:
$loopCount = 1;
$H = array();
for ($loopCount = 1; $loopCount<49; $loopCount=$loopCount + 1)
{
$H[$loopCount] = 0;
}
But it is not working at all. How to make it work?? Any idea??
EDIT RESOLVED : Thanks To Ghost helping me out.
Here my revisi code :
$H = array();
for ($loopCount = 1; $loopCount<49; $loopCount=$loopCount + 1)
{
$H{$loopCount} = 0;
}
And just call $H{1} , is complete work. Thanks again to Ghost you're hero :)
You could try this :
$loopCount = 1;
$H = '';
for ($loopCount = 1; $loopCount<48; $loopCount=$loopCount + 1)
{
${"H" . $loopCount} = 0;
}
Ok what i'm wanting to do is split a number ($row['count']) into 5, this is easy enough if you want equal numbers:
$sum = ($row['count'] / 5);
$fsum = floor($sum);
but I want each number to be different and still add up to total ie $row['count'] how can this be achieved?
Update:
If this helps its to be used to update 5 rows in a database:
$query = "SELECT * FROM foo";
$result = mysql_query($query);
while ($row = mysql_fetch_array($result)) {
$sum = ($row['count'] / 5);
$fsum = floor($sum);
$id = $row['id'];
$update = "UPDATE foo SET foo1='$fsum', foo2='$fsum', foo3='$fsum', foo4='$fsum', foo5='$fsum' WHERE id='$id'";
mysql_query($update);
}// while
so ideally the $update query would be something like:
$update = "UPDATE foo SET foo1='$fsum1', foo2='$fsum2', foo3='$fsum3', foo4='$fsum4', foo5='$fsum5' WHERE id='$id'";
This is my take:
function randomize($sum, $parts) {
$part_no = count($parts);
$continnue_counter = 0;
while (count(array_unique($parts)) != $part_no) {
$changing = array_rand($parts, 2);
if (($parts[$changing[0]] - 1) == 0 || ($parts[$changing[1]] - 1) == 0) { // don't let them go under 1
++$continnue_counter;
// sometime one element get everything and others even out on 1
// just throw away everything you got so far and start over
if ($continnue_counter > 10) {
$parts = setup($sum, $part_no);
$continnue_counter = 0;
}
continue;
}
$continnue_counter = 0;
$signum = mt_rand(0, 100) % 2 ? 1 : -1;
$delta = $signum * mt_rand(1, min($parts[$changing[0]] - 1, $parts[$changing[1]] - 1)); // -1 to make sure they don't go under 0
$parts[$changing[0]] += $delta;
$parts[$changing[1]] -= $delta;
}
return $parts;
}
function setup($sum, $part_no) {
$parts = array_fill(0, $part_no, (int)($sum / $part_no));
// acount for the reminder of (int) cast
$reminder = $sum - array_sum($parts);
while ($reminder) {
$parts[array_rand($parts)] += 1;
--$reminder;
}
return $parts;
}
$part_no = 5;
$sum = 42;
$parts = randomize($sum, setup($sum, $part_no));
var_export($parts);
print array_sum($parts)
Update:
I've added a version that introduces a little more entropy.
Update2:
The more random one had a tendency to decrement everything to 1 except one part, added an explicit detection to deal with this. Still the algorithm behind it has unknown termination time.
This script is supposed to to get a multidimensional array and iterate through the values.
The array size is 10 and each element should contain an associative array:
$games[0] => array('foo' => 'bar')
$games[1] => array('foo1' => 'bar1')
etc..
The while loop should iterate 5 times in this example. The for loop should iterate 10 times for each iteration of the while loop.
So I am expecting the echo to be:
countwhile = 5 countfor = 50 totalgames = 50
but im actually getting
countwhile = 5 countfor = 150 totalgames = 150
I believe $games array is not the problem because i have have made that call below before and have used print_r to view the contents and it is as expected.
This whole code is not in a function or class just as is on my index.php page, could the problem be to do with the variable scopes?
$totalruns = 5;
$endindx = 10;
$startindx = 0;
$countwhile = 0;
$countfor = 0;
$totalfilesize = 0;
$totalgames = 0;
$sizeof = 0;
while($totalruns > 0)
{
$games = $feedHandler->getGames($startindx, $endindx);
$sizeof = sizeof($games);
for($i=0; $i<$sizeof; $i++)
{
$totalfilesize += $games[$i]['swf_file_size'];
$countfor++;
}
$startindx += 10;
$endindx += 10;
$totalruns -= 1;
$totalgames += $sizeof;
unset($games);
}
echo'<p>' . ' countwhile = ' . $countwhile . ' countfor = ' . $countfor . '</p>';
problem 1:
$sizeof = sizeof($games)-1;
explain 1:
for($i=0, $sizeof = sizeof($games);$i<=$sizeof;$i++)
the above will execute 11 times is the sizeof($games) is 10
So, either
for($i=1, $sizeof = sizeof($games);$i<=$sizeof;$i++)
or
for($i=0, $sizeof=sizeof($games)-1;$i<=$sizeof;$i++)
problem 2 :
$e = sizeof($games);
explain 2 :
$e = count($games);
...
$e += $e;
If the final size of $games is 50, you just sum it to 100
so, it some kind of logic problem
I know the answer has been accepted, but thought I'd refactor and make this a little more clean.
function retrieveGamesInfo($limit, $start = 0)
{
$feedHandler = new FeedHandler(); // ignore this, just for testing to simluate your call
if ($start > $limit)
throw new Exception("Start index must be within the limit");
$result = Array(
'TotalGames' => 0,
'TotalFileSize' => 0
);
// iterate over the results in groups of 10
$range = $start;
while ($range < $limit)
{
$range_end = $range + 10; // change me to play with the grab amount
if ($range_end > $limit)
$range_end = $limit;
// grab the next 10 entries
$games = $feedHandler->getGames($range,$range_end);
$result['TotalGames'] += count($games);
foreach ($games as $game)
$result['TotalFileSize'] += $game['swf_file_size'];
$range = $range_end;
}
return $result;
}
var_dump(retrieveGamesInfo(50));
based one everything I've read and taken in, this should be a good supplement. The above provides the following result:
array(2) {
["TotalGames"]=>
int(50)
["TotalFileSize"]=>
int(275520)
}
As i said in my comment $e is overwritten at each loop, so what you have in $e at the end is just the last count of elements in $games *2.
Added with ajreal issues this means results are what your code is expected to render :-) and I'm quite sure your last $game is not just 10 elements but 50. Quiet sure... but it's hard to read.
Im working with a php url shortener and my problem is that it only creates the MAX number of shortening codes up to 2 characters (eg domain.com/XX). I want it to go up to 5 characters (eg domain.com/XXXXX)
I believe i found the relevant code, but im not sure how to change it to allow for this modification
function decode_url_id($code)
{
$scheme = "abcdefghijklmnoprstuqwxvyz0123456789ABCDEFGHIJKLMNOPRSTQWXUVYZ";
$scheme_size = strlen($scheme);
$number = 0;
$code_size = strlen($code);
$code = strrev($code);
for($i = 0; $i < $code_size; $i++)
{
$digit_value = strpos($scheme, $code[$i]);
$number += ($digit_value * pow($scheme_size, $i));
}
return $number;
}
function encode_url_id($number, $code="")
{
$scheme = "abcdefghijklmnoprstuqwxvyz0123456789ABCDEFGHIJKLMNOPRSTQWXUVYZ";
$scheme_size = strlen($scheme);
if ($number >= $scheme_size)
{
$c = $number % $scheme_size;
$code .= $scheme[$c];
$number = floor($number / $scheme_size);
return encode_url_id($number, $code);
}
else
{
$code .= $scheme[$number];
$code = strrev($code);
}
return $code;
}
Am i barking up the wrong tree?
Why not just encode the ID of the URL in the database with http://www.pgregg.com/projects/php/base_conversion/base_conversion.inc.phps.
Example usage:
$new_url = base_base2base($link_id, 10, 62);