diff DataTables-1.9.4/examples/server_side/scripts/objects_jsonp.php @ 0:ac5f9272033b draft

first upload
author saskia-hiltemann
date Tue, 01 Jul 2014 11:42:23 -0400
parents
children
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DataTables-1.9.4/examples/server_side/scripts/objects_jsonp.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 $_GET['callback'].'('.json_encode( $output ).');';
+?>
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