嗨，我正在使用 jquery 的数据表插件，当我的数据在 600 左右时它工作正常，但现在我的数据是 28000，并且数据表加载它的速度越来越慢，所以这是我可以使其执行速度更快的一种方式，这样它就不会花很多时间来加载 php 中的新手，所以我只知道常见的语法。谁能帮我这是我的代码
<script type="text/javascript" charset="utf-8">
$(document).ready(function(){
$('#datatables').dataTable({
"sPaginationType":"full_numbers",
"aaSorting":[[2, "desc"]],
"bJQueryUI":true,
"sAjaxSource": "ajax.php"
});
})
</script>
<table id="datatables" class="display">
<thead>
<tr>
<th>Srno.</th>
<th>Brno.</th>
<th>Name</th>
<th>Address</th>
<th>City</th>
<th>Pin</th>
<th>Mobile</th>
<th>Actions</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
here is ajax.php
<?php
require("includes/dbconnect.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('grno', 'brno', 'name', 'address', 'city', 'pin', 'mobile');
/* Indexed column (used for fast and accurate table cardinality) */
$sIndexColumn = "grno";
/* DB table to use */
$sTable = "mdb";
/* Database connection information */
$gaSql['user'] = "root";
$gaSql['password'] = "rajF@1998";
$gaSql['db'] = "mdb";
$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']),
"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[$i]];
} elseif ($aColumns[$i] === "vouchno") {
$row[] = "<a href=\"invoice.php?ORDERID=" . $aRow[$aColumns[$i]] . "\" target=\"_blank\" title=\"View Invoice: " . $aRow[$aColumns[$i]] . "\">" . $aRow[$aColumns[$i]] . "</a><a href=\"invoice.php?action=delete&ORDERID=" . $aRow[$aColumns[$i]] . "\"onClick=\"return confirm('Are you sure you want to delete?')\"><img border=\"0\" src=\"../images/icons/trash-can-delete.png\" width=\"16\" height=\"16\"></a>";
} else if ($aColumns[$i] != ' ') {
/* General output */
$row[] = $aRow[$aColumns[$i]];
}
}
$output['aaData'][] = $row;
}
echo json_encode($output);
?>