Mercurial > repos > saskia-hiltemann > ireport
diff DataTables-1.9.4/examples/server_side/scripts/objects.php @ 0:ac5f9272033b draft
first upload
author | saskia-hiltemann |
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date | Tue, 01 Jul 2014 11:42:23 -0400 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DataTables-1.9.4/examples/server_side/scripts/objects.php Tue Jul 01 11:42:23 2014 -0400 @@ -0,0 +1,193 @@ +<?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 + */ + + /* + * Local functions + */ + function fatal_error ( $sErrorMessage = '' ) + { + header( $_SERVER['SERVER_PROTOCOL'] .' 500 Internal Server Error' ); + die( $sErrorMessage ); + } + + + /* + * MySQL connection + */ + if ( ! $gaSql['link'] = mysql_pconnect( $gaSql['server'], $gaSql['user'], $gaSql['password'] ) ) + { + fatal_error( 'Could not open connection to server' ); + } + + if ( ! mysql_select_db( $gaSql['db'], $gaSql['link'] ) ) + { + fatal_error( 'Could not select database ' ); + } + + + /* + * Paging + */ + $sLimit = ""; + if ( isset( $_GET['iDisplayStart'] ) && $_GET['iDisplayLength'] != '-1' ) + { + $sLimit = "LIMIT ".intval( $_GET['iDisplayStart'] ).", ". + intval( $_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" ) + { + $iColumnIndex = array_search( $_GET['mDataProp_'.$_GET['iSortCol_'.$i]], $aColumns ); + $sOrder .= "`".$aColumns[ $iColumnIndex ]."` ". + ($_GET['sSortDir_'.$i]==='asc' ? 'asc' : 'desc') .", "; + } + } + + $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) ; $i++ ) + { + if ( isset($_GET['bSearchable_'.$i]) && $_GET['bSearchable_'.$i] == "true" ) + { + $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 "; + } + $iColumnIndex = array_search( $_GET['mDataProp_'.$i], $aColumns ); + $sWhere .= $aColumns[$iColumnIndex]." 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 fatal_error( 'MySQL Error: ' . mysql_errno() ); + + /* Data set length after filtering */ + $sQuery = " + SELECT FOUND_ROWS() + "; + $rResultFilterTotal = mysql_query( $sQuery, $gaSql['link'] ) or fatal_error( 'MySQL Error: ' . mysql_errno() ); + $aResultFilterTotal = mysql_fetch_array($rResultFilterTotal); + $iFilteredTotal = $aResultFilterTotal[0]; + + /* Total data set length */ + $sQuery = " + SELECT COUNT(".$sIndexColumn.") + FROM $sTable + "; + $rResultTotal = mysql_query( $sQuery, $gaSql['link'] ) or fatal_error( 'MySQL Error: ' . mysql_errno() ); + $aResultTotal = mysql_fetch_array($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[ $aColumns[$i] ] = ($aRow[ $aColumns[$i] ]=="0") ? '-' : $aRow[ $aColumns[$i] ]; + } + else if ( $aColumns[$i] != ' ' ) + { + /* General output */ + $row[ $aColumns[$i] ] = $aRow[ $aColumns[$i] ]; + } + } + $output['aaData'][] = $row; + } + + echo json_encode( $output ); +?> \ No newline at end of file