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php导出Excel

php导出Excel

php
phpExcel
导出excel

这些天在使用PHPExcel导出数据时,5000条数据竟然挂了。后来跟同事聊聊,有些明悟,PHPExcel做了很多处理,我在这里理解为渲染,就会暂用过多的空间,‘膨胀’的空间导致内存暂用过大,就挂了。其实只要我们只是简单的导出操作,没有必要使用PHPExcel。大牛给了我这个程序,还没搞清楚原理(如果有小伙伴知道,请不吝赐教哦!),贴出代码:

//处理Excel导出
public function excelData($datas,$titlename,$title,$filename){
    $str = "<html xmlns:o=\"urn:schemas-microsoft-com:office:office\"\r\nxmlns:x=\"urn:schemas-microsoft-com:office:excel\"\r\nxmlns=\"http://www.w3.org/TR/REC-html40\">\r\n<head>\r\n<meta http-equiv=Content-Type content=\"text/html; charset=utf-8\">\r\n</head>\r\n<body>";
    $str .="<table border=1><head>".$titlename."</head>";
    $str .= $title;
    foreach ($datas  as $key=> $rt )
    {
        $str .= "<tr>";
        foreach ( $rt as $k => $v )
        {
            $str .= "<td>{$v}</td>";
        }
        $str .= "</tr>\n";
    }
    $str .= "</table></body></html>";
    header( "Content-Type: application/vnd.ms-excel; name=‘excel‘" );
    header( "Content-type: application/octet-stream" );
    header( "Content-Disposition: attachment; filename=".$filename );
    header( "Cache-Control: must-revalidate, post-check=0, pre-check=0" );
    header( "Pragma: no-cache" );
    header( "Expires: 0" );
    exit( $str );
}

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php导出Excel