PHP uses native method to export excel instance sharing

1. Preface

Sometimes it is necessary to export database table resources to excel to make some report data.

There are several ways to export excel from PHP:

1. Use the PHP class library to export, such as PHPExcel

2. Use php native method to export

This article introduces how to export excel through native method

2, key functions

2.1 , ob output

• ob_start();

• ob_get_contents

• ob_end_clean

• fopen

• fwrite

• fclose

• iconv

2.2. Header output

1. header

2. iconv

3. Use the ob function to export excel

The ob function is mainly divided into three steps:

1. Set up the cache

2. Read cache

3. Write file

Paste the exported excel class below

<?phpclass Excel 
{    // ob函数缓存的开始
    public static function start ()
    {
        ob_start();
    }    // 获取缓存内容
    public static function save ($path) 
    {
        $data = ob_get_contents();
        ob_end_clean();
        self::writeToExcel($path, $data);
    }    //写到文件
    private static function writeToExcel ($fn, $data) 
    {
        $dir = self::setDir();
        $fp = fopen($dir . &#39;/&#39;. $fn, &#39;wb&#39;);
        fwrite($fp, $data);
        fclose($fp);
    }    //excel默认是GKB，所有要转码
    public static function setChar ($value, $inchar = &#39;utf-8&#39;, $outchar =&#39;gbk&#39;)
    {        
    return  iconv($inchar, $outchar, $value);//转化编码    
    }    
    //创建目录，linux系统一般要写到文件，目录需要w谦虚，而文件需要x权限，为了省事直接建立子文件夹，可以不需要修改谦虚
    public static function setDir($dirName = &#39;excel&#39;)
    {        if(!is_dir($dirName)) {
            mkdir($dirName);
        }        return $dirName;
    }
}

4. Complete page code

<?php
    header(&#39;Content-Type: text/html; charset=GBK&#39;); //excel需要GBK编码，为了防止转码产生的乱码，需要设置成GBK
    require &#39;coon.php&#39;;
    require &#39;excel.class.php&#39;;

    $sql = &#39;select * from user&#39;;
    $res = $link->query($sql);    //判断是否有发送get数据
    if(isset($_GET[&#39;id&#39;])){
        $name = empty($_GET[&#39;id&#39;]) ? &#39;a&#39; . rand(1000,9999) : $_GET[&#39;id&#39;] ;
        $filename = $name . &#39;.xls&#39;;        //设置缓存的开始        Excel::start();
    }?>
<?php    //页面输出一般是不需要转码的，excel输出才需要转码
    echo &#39;<table width=500 height=25 border=0 align=center cellpadding=0 cellspacing=0>&#39;;
    echo &#39;<thead><tr>&#39;;    //设置thead输出
    echo &#39;<td style="border-bottom:1px solid black;padding:10px;text-align:center;">&#39; . Excel::setChar(&#39;编号&#39;) . &#39;</td>&#39;;
    echo &#39;<td style="border-bottom:1px solid black;padding:10px;text-align:center;">&#39; . Excel::setChar(&#39;用户名&#39;) . &#39;</td>&#39;;
    echo &#39;<td style="border-bottom:1px solid black;padding:10px;text-align:center;">&#39; . Excel::setChar(&#39;密码&#39;) . &#39;</td>&#39;;
    echo &#39;</thead></tr>&#39;;?>
<?php
    echo &#39;<tbody>&#39;;    //设置tbody输出
    while($re = $res->fetch(PDO::FETCH_ASSOC)){
        echo &#39;<tr>&#39;;
        echo &#39;<td style="border-bottom:1px solid black;padding:10px;text-align:center;">&#39; . Excel::setChar($re[&#39;id&#39;]) . &#39;</td>&#39;;
        echo &#39;<td style="border-bottom:1px solid black;padding:10px;text-align:center;">&#39; . Excel::setChar($re[&#39;user&#39;]) . &#39;</td>&#39;;
        echo &#39;<td style="border-bottom:1px solid black;padding:10px;text-align:center;">&#39; . Excel::setChar($re[&#39;pwd&#39;]) . &#39;</td>&#39;;
        echo &#39;</tr>&#39;;
    }
    echo &#39;</tbody></table>&#39;;?>
<?phpif(isset($_GET[&#39;id&#39;])){    //保存文件    Excel::save($filename);
}if(isset($_GET[&#39;id&#39;])){
    echo &#39;<a href="obexcel.php">&#39; .Excel::setChar(&#39;完成&#39;) .&#39;</a>&#39;;
}else{
    echo &#39;<a href="obexcel.php?id">&#39; . Excel::setChar(&#39;导出&#39;) .&#39;</a>&#39;;
    
}?>

5. Use header to download excel

Using the ob function to export excel can only be saved to the server, not Download is provided (it is still possible under special processing); the following introduces the use of header() function to export and download excel

The main two header() functions

header("Content-type:application/vnd.ms-excel");//指定文件类型    
header("Content-Disposition:filename=a.xls" );  //指定下载文件名

Other methods are the same as the export of the ob function (complete code below)

query($sql);?>

';
    echo '';    //设置thead输出
    echo '' . Excel::setChar('编号') . '';
    echo '' . Excel::setChar('用户名') . '';
    echo '' . Excel::setChar('密码') . '';
    echo '';?>

';    //设置tbody输出
    while($re = $res->fetch(PDO::FETCH_ASSOC)){
        echo '';
        echo '' . Excel::setChar($re['id']) . '';
        echo '' . Excel::setChar($re['user']) . '';
        echo '' . Excel::setChar($re['pwd']) . '';
        echo '';
    }
    echo '';?>

6. Conclusion

Here is only a brief introduction to the export and download of excel. , one is to use the ob() function, and the other is to use the header() function. The two methods are similar, but it should be noted that excel requires GBK encoding, and the iconv function needs to be used for transcoding to ensure that no garbled characters appear.

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