服務器端數據表select

Question

我正在使用下面的代碼來加載數據，雖然它運行良好，但我想縮小我的查詢而不加載整個數據。例如，我想選擇平臺是'Windows'的所有東西。 如何在下面的代碼中添加where子句。

感謝您的幫助。

/* 
    * Script: DataTables server-side script for PHP and MySQL 
    * Copyright: 2010 - Allan Jardine 
    * License: GPL v2 or BSD (3-point) 
    */ 

    /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
    * 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"; 


    /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
    * 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); 

添加代碼的格式。通過扎瓦

Answer 1

從讀劇本，它看起來像所有你需要添加一些_GET參數查詢字符串：

&bSearchable_2=true&sSearch_2=Windows