source: branches/WebApplication/MVC2/HeuristicLabWeb.PluginHost/HLWebPluginHost/Content/jQuery/jQueryPlugins/DataTables-1.7.6/examples/examples_support/server_processing.php @ 6286

<?php
  /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
   * Easy set variables
   */
  
  /* Array of database columns which should be read and sent back to DataTables. Use a space where
   * you want to insert a non-database field (for example a counter or static image)
   */
  $aColumns = array( 'engine', 'browser', 'platform', 'version', 'grade' );
  
  /* Indexed column (used for fast and accurate table cardinality) */
  $sIndexColumn = "id";
  
  /* DB table to use */
  $sTable = "ajax";
  
  /* Database connection information */
  $gaSql['user']       = "";
  $gaSql['password']   = "";
  $gaSql['db']         = "";
  $gaSql['server']     = "localhost";
  
  /* REMOVE THIS LINE (it just includes my SQL connection user/pass) */
  include( $_SERVER['DOCUMENT_ROOT']."/datatables/mysql.php" );
  
  
  /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
   * If you just want to use the basic configuration for DataTables with PHP server-side, there is
   * no need to edit below this line
   */
  
  /* 
   * MySQL connection
   */
  $gaSql['link'] =  mysql_pconnect( $gaSql['server'], $gaSql['user'], $gaSql['password']  ) or
    die( 'Could not open connection to server' );
  
  mysql_select_db( $gaSql['db'], $gaSql['link'] ) or 
    die( 'Could not select database '. $gaSql['db'] );
  
  
  /* 
   * Paging
   */
  $sLimit = "";
  if ( isset( $_GET['iDisplayStart'] ) && $_GET['iDisplayLength'] != '-1' )
  {
    $sLimit = "LIMIT ".mysql_real_escape_string( $_GET['iDisplayStart'] ).", ".
      mysql_real_escape_string( $_GET['iDisplayLength'] );
  }
  
  
  /*
   * Ordering
   */
  $sOrder = "";
  if ( isset( $_GET['iSortCol_0'] ) )
  {
    $sOrder = "ORDER BY  ";
    for ( $i=0 ; $i<intval( $_GET['iSortingCols'] ) ; $i++ )
    {
      if ( $_GET[ 'bSortable_'.intval($_GET['iSortCol_'.$i]) ] == "true" )
      {
        $sOrder .= $aColumns[ intval( $_GET['iSortCol_'.$i] ) ]."
          ".mysql_real_escape_string( $_GET['sSortDir_'.$i] ) .", ";
      }
    }
    
    $sOrder = substr_replace( $sOrder, "", -2 );
    if ( $sOrder == "ORDER BY" )
    {
      $sOrder = "";
    }
  }
  
  
  /* 
   * Filtering
   * NOTE this does not match the built-in DataTables filtering which does it
   * word by word on any field. It's possible to do here, but concerned about efficiency
   * on very large tables, and MySQL's regex functionality is very limited
   */
  $sWhere = "";
  if ( isset($_GET['sSearch']) && $_GET['sSearch'] != "" )
  {
    $sWhere = "WHERE (";
    for ( $i=0 ; $i<count($aColumns) ; $i++ )
    {
      $sWhere .= $aColumns[$i]." LIKE '%".mysql_real_escape_string( $_GET['sSearch'] )."%' OR ";
    }
    $sWhere = substr_replace( $sWhere, "", -3 );
    $sWhere .= ')';
  }
  
  /* Individual column filtering */
  for ( $i=0 ; $i<count($aColumns) ; $i++ )
  {
    if ( isset($_GET['bSearchable_'.$i]) && $_GET['bSearchable_'.$i] == "true" && $_GET['sSearch_'.$i] != '' )
    {
      if ( $sWhere == "" )
      {
        $sWhere = "WHERE ";
      }
      else
      {
        $sWhere .= " AND ";
      }
      $sWhere .= $aColumns[$i]." LIKE '%".mysql_real_escape_string($_GET['sSearch_'.$i])."%' ";
    }
  }
  
  
  /*
   * SQL queries
   * Get data to display
   */
  $sQuery = "
    SELECT SQL_CALC_FOUND_ROWS ".str_replace(" , ", " ", implode(", ", $aColumns))."
    FROM   $sTable
    $sWhere
    $sOrder
    $sLimit
  ";
  $rResult = mysql_query( $sQuery, $gaSql['link'] ) or die(mysql_error());
  
  /* Data set length after filtering */
  $sQuery = "
    SELECT FOUND_ROWS()
  ";
  $rResultFilterTotal = mysql_query( $sQuery, $gaSql['link'] ) or die(mysql_error());
  $aResultFilterTotal = mysql_fetch_array($rResultFilterTotal);
  $iFilteredTotal = $aResultFilterTotal[0];
  
  /* Total data set length */
  $sQuery = "
    SELECT COUNT(".$sIndexColumn.")
    FROM   $sTable
  ";
  $rResultTotal = mysql_query( $sQuery, $gaSql['link'] ) or die(mysql_error());
  $aResultTotal = mysql_fetch_array($rResultTotal);
  $iTotal = $aResultTotal[0];
  
  
  /*
   * Output
   */
  $output = array(
    "sEcho" => intval($_GET['sEcho']),
    "iTotalRecords" => $iTotal,
    "iTotalDisplayRecords" => $iFilteredTotal,
    "aaData" => array()
  );
  
  while ( $aRow = mysql_fetch_array( $rResult ) )
  {
    $row = array();
    for ( $i=0 ; $i<count($aColumns) ; $i++ )
    {
      if ( $aColumns[$i] == "version" )
      {
        /* Special output formatting for 'version' column */
        $row[] = ($aRow[ $aColumns[$i] ]=="0") ? '-' : $aRow[ $aColumns[$i] ];
      }
      else if ( $aColumns[$i] != ' ' )
      {
        /* General output */
        $row[] = $aRow[ $aColumns[$i] ];
      }
    }
    $output['aaData'][] = $row;
  }
  
  echo json_encode( $output );
?>