Bir php dizi sıralama

3 Cevap php

I have this code that prints out columns in my DB and adds a column "Profit" for me. Distance is calculated in a complex way and so is done in a loop, while the transformation of distance to "profit" is done as it is printed out.

Ne yapmak istiyorum "dönem karı" nın azalan sırayla onları baskı olduğunu. Ben en iyi yolu oradan onları baskı bir dizi saklayın ve "orada bunları sıralamak" olacağını inanıyorum (ama bilmiyorum).

How do I determine what row of the array to stick them in?
How do I sort in an array?
How do I loop through the array so I can't print them back out?

//display results
// now we retrieve the routes from the db
$query = "SELECT * FROM routes ORDER BY `id`;";

// run the query. if it fails, display error
$result = @mysql_query("$query") or die('<p class="error">There was an unexpected error grabbing routes from the database.</p>');

?>
<tr>
   <td style="background: url(http://www.teamdelta.byethost12.com/barbg.jpg) repeat-x top;">
      <center><b><font color="#F3EC84">»Matches«</font></b></center>
   </td>
</tr>

<tr>
<td style="background: #222222;">

</font>
<table border="0" width="100%"><tr>


<td width="10%"><b><center><b>Player</b></center></b></td>
<td width="10%"><center><b>Base</b></center></td>
<td width="10%"><b>Location</b></td>
<td width="5%"><b>Econ</b></td>
<td width="10%"><b>Distance</b></td>
<td width="10%"><center><b>Profit cred./h</b></center></td>
<td width="40%"><b>Comment</b></td>
<td width="5%"><align="right"><b>Delete</b></align></td>

</tr> 

<?

// while we still have rows from the db, display them
while ($row = mysql_fetch_array($result)) {

    $dname = stripslashes($row['name']);
    $dbase = stripslashes($row['base']);
    $dlocation = stripslashes($row['location']);
    $dx = stripslashes($row['x']);
    $dy = stripslashes($row['y']);
    $dgalaxy = stripslashes($row['galaxy']);
    $dplanet = stripslashes($row['planet']);
    $dcomment = stripslashes($row['comment']);
    $did = stripslashes($row['id']);
    $decon = stripslashes($row['econ']);

    $distance = -1 ;//default

    //distance calc
    if($dgalaxy == $galaxy)
    {//interstellar
       if(($dx == $x) && ($dy == $y))
       {//inter planitary
          if ((floor($planet/10)*10) == (floor($dplanet/10)*10))
          {// intra planitary loonar
             $distance = abs(fmod($planet,10)-fmod($planet,10))*0.1;  
          }
          else
          {// inter planitary
             $distance = abs((floor($planet/10)*10)-(floor($planet/10)*10))*0.2;  
          }
       }else
       {//interstllar
          $distance = round(Sqrt(pow(($dx-$x),2)+pow(($dy-$y),2)));//interstllar
       }
    }
    else
    {//intergalatic
       if ((floor($galaxy/10)*10) == (floor($dgalaxy/10)*10)) 
       {//intra galactic cluster
          $distance = abs(($galaxy-$dgalaxy))*200;
       }     
       else
       {//inter galactic cluster
          if ($galaxy < $dgalaxy)
          {//anti clockwise inter galactic cluster
             $distance = (((9-fmod($galaxy,10))*200)+2000+(fmod($dgalaxy,10)*200));
          }
          else
          {//clockwise inter galactic cluster
             $distance = (((fmod($galaxy,10))*200)+2000+(fmod(9-$dgalaxy,10)*200));
          }
       }
    }

    echo('<tr>
    <td width=\'20px\'><center>('.$dname.')</center></td>
    <td><center>'.$dbase.'</center></td>
    <td><a href="http://delta.astroempires.com/map.aspx?loc='.$dlocation.'">'.$dlocation.'</a></td>
    <td>'.$decon.'</td><td>'.$distance.' </td>
    <td>'.round(Sqrt(min($decon,$econ))*(1+Sqrt($distance)/75+Sqrt($players)/10)).'</td>
    <td>['.$dcomment.']</td>
    <td><a href=deleterouteconfirm.php?id='.$did.'>Delete</a></td>
    </tr>');
}
?></table><!--display results table-->

3 Cevap

Ben uygulamak için en kolay çözüm veritabanı sonuçlar üzerinde çift-pass olacak düşünüyorum.

Ilk geçiş "mesafe" ve her satır için "kar" değerler üretmek ve biz çözeriz bir diziye bu satırları saklamak için olacak.

İkinci geçiş düzgün ilk geçişte oluşturulan ve bunları görüntülemek dizinin üzerinde sadece basit döngü, sıralanır ve çıkış için kaçtı olmuştur olacaktır sonra.

<?php
//display results
// now we retrieve the routes from the db
$query = "SELECT * FROM routes ORDER BY `id`;";

// run the query. if it fails, display error
$result = @mysql_query( "$query" ) or die( '<p class="error">There was an unexpected error grabbing routes from the database.</p>' );

?>
<tr>
    <td
    	style="background: url(http://www.teamdelta.byethost12.com/barbg.jpg) repeat-x top;">
    <center><b><font color="#F3EC84">»Matches«</font></b></center>
    </td>
</tr>

<tr>
    <td style="background: #222222;"></font>
    <table border="0" width="100%">
    	<tr>


    		<td width="10%"><b>
    		<center><b>Player</b></center>
    		</b></td>
    		<td width="10%">
    		<center><b>Base</b></center>
    		</td>
    		<td width="10%"><b>Location</b></td>
    		<td width="5%"><b>Econ</b></td>
    		<td width="10%"><b>Distance</b></td>
    		<td width="10%">
    		<center><b>Profit cred./h</b></center>
    		</td>
    		<td width="40%"><b>Comment</b></td>
    		<td width="5%"><align="right"><b>Delete</b></align></td>

    	</tr> 

<?

// while we still have rows from the db, display them
$resultSet = array();
while ( $row = mysql_fetch_array( $result ) )
{

  $dname = stripslashes( $row['name'] );
  $dbase = stripslashes( $row['base'] );
  $dlocation = stripslashes( $row['location'] );
  $dx = stripslashes( $row['x'] );
  $dy = stripslashes( $row['y'] );
  $dgalaxy = stripslashes( $row['galaxy'] );
  $dplanet = stripslashes( $row['planet'] );
  $dcomment = stripslashes( $row['comment'] );
  $did = stripslashes( $row['id'] );
  $decon = stripslashes( $row['econ'] );

  $distance = -1; //default


  //distance calc
  if ( $dgalaxy == $galaxy )
  { //interstellar
    if ( ( $dx == $x ) && ( $dy == $y ) )
    { //inter planitary
      if ( ( floor( $planet / 10 ) * 10 ) == ( floor( $dplanet / 10 ) * 10 ) )
      { // intra planitary loonar
        $distance = abs( fmod( $planet, 10 ) - fmod( $planet, 10 ) ) * 0.1;
      } else
      { // inter planitary
        $distance = abs( ( floor( $planet / 10 ) * 10 ) - ( floor( $planet / 10 ) * 10 ) ) * 0.2;
      }
    } else
    { //interstllar
      $distance = round( Sqrt( pow( ( $dx - $x ), 2 ) + pow( ( $dy - $y ), 2 ) ) ); //interstllar
    }
  } else
  { //intergalatic
    if ( ( floor( $galaxy / 10 ) * 10 ) == ( floor( $dgalaxy / 10 ) * 10 ) )
    { //intra galactic cluster
      $distance = abs( ( $galaxy - $dgalaxy ) ) * 200;
    } else
    { //inter galactic cluster
      if ( $galaxy < $dgalaxy )
      { //anti clockwise inter galactic cluster
        $distance = ( ( ( 9 - fmod( $galaxy, 10 ) ) * 200 ) + 2000 + ( fmod( $dgalaxy, 10 ) * 200 ) );
      } else
      { //clockwise inter galactic cluster
        $distance = ( ( ( fmod( $galaxy, 10 ) ) * 200 ) + 2000 + ( fmod( 9 - $dgalaxy, 10 ) * 200 ) );
      }
    }
  }
  $row['distance'] = $distance;
  $row['profit'] = round( Sqrt( min( $decon, $econ ) ) * ( 1 + Sqrt( $distance ) / 75 + Sqrt( $players ) / 10 ) );
  $resultSet[] = $row;
}

//  Perform custom sort
usort( $resultSet, 'sorter' );
function sorter( $a, $b )
{
  if ( $a['profit'] == $b['profit'] ) return 0;
  return ( $a['profit'] < $b['profit'] ) ? -1 : 1;
}

//  Switch to "descending"
array_reverse( $resultSet );

//  Output escape the values
$safeForHtml = array_map( 'htmlspecialchars', $resultSet );

foreach( $safeForHtml as $row )
{
  echo ( '<tr>
                <td width=\'20px\'><center>(' . $row['name'] . ')</center></td>
                <td><center>' . $row['base'] . '</center></td>
                <td><a href="http://delta.astroempires.com/map.aspx?loc=' . $row['location'] . '">' . $row['location'] . '</a></td>
                <td>' . $row['econ'] . '</td>
                <td>' . $row['distance'] . ' </td>
                <td>' . $row['profit'] . '</td>
                <td>[' . $row['comment'] . ']</td>
                <td><a href=deleterouteconfirm.php?id=' . $row['id'] . '>Delete</a></td>
                </tr>' );
}
?>
</table>
    <!--display results table-->

Eğer MySQL veri alıyorsanız. Neden doğrudan sorgudan sonuçları sıralamak değil?

$query = "SELECT * FROM routes ORDER BY `profit` DESC, `id`;";

EDIT: soru, kar bir alan değildir Yeniden okumak, ama size kar değerlerin yerine bunu her defasında yeniden hesaplama ile bir tablo doldurmak isteyebilirsiniz.

EDIT 2: Ya da, sizin çıkış erteleyin kar hesaplamak, bir dizide her şeyi koymak, ve sonra aşağıdaki kullanın:

$resultArray; //Your array with all your rows plus a profit key-value pair.

$sortedArray = array_msort($resultArray, array('profit'=>SORT_DESC));

// array_msort by cagret at gmail dot com
function array_msort($array, $cols)
{
    $colarr = array();
    foreach ($cols as $col => $order) {
        $colarr[$col] = array();
        foreach ($array as $k => $row) { $colarr[$col]['_'.$k] = strtolower($row[$col]); }
    }
    $params = array();
    foreach ($cols as $col => $order) {
        $params[] =& $colarr[$col];
        $params = array_merge($params, (array)$order);
    }
    call_user_func_array('array_multisort', $params);
    $ret = array();
    $keys = array();
    $first = true;
    foreach ($colarr as $col => $arr) {
        foreach ($arr as $k => $v) {
            if ($first) { $keys[$k] = substr($k,1); }
            $k = $keys[$k];
            if (!isset($ret[$k])) $ret[$k] = $array[$k];
            $ret[$k][$col] = $array[$k][$col];
        }
        $first = false;
    }
    return $ret;

}