export.php
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<?php
header('Content-Type: application/vnd.ms-excel;charset=utf-8');
$title = date('Y-m-d').'_机器型号数据';
$name = $title.".xls";
header('Content-Disposition: attachment;filename='.$name.'');
header('Cache-Control: max-age=0');
$fp = fopen('php://output', 'a');
$limit = 5000;
$cnt=0;
ini_set('memory_limit','512M');
ini_set('max_execution_time',0);
ob_end_clean();
ob_start();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns:o="urn:schemas-microsoft-com:office:office"
xmlns:x="urn:schemas-microsoft-com:office:excel"
xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=utf-8">
</head>
<body>
<div id="Classeur1_16681" align='center' x:publishsource="Excel">
<table x:str border='1' cellpadding='0' cellspacing='0' width='100%' style="border-collapse: collapse">
<thead>
<tr>
<th width="15%">编号</th>
<th width="25%">机器型号</th>
<th width="25%">创建时间</th>
</tr>
</thead>
<tbody>
<?php foreach ($listdata as $item) : ?>
<tr>
<td style="padding:12px;"><?= (isset($item["model_no"]) ? $item["model_no"] : "") ?></td>
<td style="padding:12px;"><?= (isset($item["name"]) ? $item["name"] : "") ?>
<td style="padding:12px;"><?= date("Y-m-d H:i:s", $item['created_at'])?></td>
</tr>
<?php
$cnt ++;
if (500 == $cnt) { //刷新一下输出buffer，防止由于数据过多造成问题
ob_flush();
flush();
$cnt = 0;
}
?>
<?php endforeach;?>
<?php ob_flush();
flush();
ob_end_clean();
?>
</tbody>
</table>
</div>
</body>
</html>