Question

我会将这个示例发布给sqlsrv DB中需要插入文件到varbinary（max）字段帮助的人。此外，如果您需要从varbinary字段中读取，您可以看到我是如何做到的。此代码正常运行，但欢迎您提出所有意见和建议。这是样本表：

CREATE TABLE [dbo].[files]
(
[id] [int] NOT NULL IDENTITY(1, 1),
[content] [varbinary] (max) NULL,
[filename] [varchar] (max) COLLATE Croatian_CI_AS NULL
)

首先输入您使用的服务器的数据。如果需要在db：

中的varbinary字段中插入文件

<?php
$server = "";
$konekcionistring = array( "Database"=>"", "UID"=>"", "PWD"=>"");
$konekcija = sqlsrv_connect( $server, $konekcionistring);

$newfileName = 'testX.pdf';
$newtmpName  = 'C:\xampp\htdocs\testX.pdf';

$fp = fopen($newtmpName, 'rb');
$file_content = fread($fp, filesize($newtmpName));
fclose($fp);

$sql = "INSERT INTO files ([content],[filename]) SELECT CONVERT(VARBINARY(MAX),?),?";

$parametri = array(
                array($file_content),
                array($newfileName)
                );
$r_blob = sqlsrv_query($konekcija, $sql, $parametri);

if( $r_blob === false) 
    {
      die( print_r( sqlsrv_errors(), true) );
    }
?>

当您需要从DB中的varbinary字段读取数据时，您可以使用以下代码：

<?php
$server = "";
$konekcionistring = array( "Database"=>"", "UID"=>"", "PWD"=>"");
$konekcija = sqlsrv_connect( $server, $konekcionistring);

$skript = "SELECT F.content, F.filename AS Template FROM dbo.files AS F";

$izvrsiSQL = sqlsrv_query($konekcija, $skript);
$result = sqlsrv_fetch_array($izvrsiSQL, SQLSRV_FETCH_ASSOC);
$filename = $result['filename'];
$X = $result['content'];


header("Content-type:application/pdf");
header('Content-Disposition: attachment inline; filename="'.$filename.'"');
echo $X;
?>

如果您有任何意见或建议，欢迎您。

Answer 1

如果你想压缩和上传

function compressImage($filename){

    $details = getimagesize($filename);
    $content = file_get_contents($filename);
    $srcImg = imagecreatefromstring($content);

    
    //get content
    ob_start();
    imagejpeg($srcImg, null,10);
    $contents = ob_get_contents();
    ob_end_clean(); 

    imagedestroy($srcImg);
    return $contents;
}


            $CompressedImage = compressImage($FileTempName);

            $status = sqlsrv_query($conn,'insert into Post (P_image) values (?)', array(  
            array($CompressedImage, SQLSRV_PARAM_IN,SQLSRV_PHPTYPE_STREAM(SQLSRV_ENC_BINARY), SQLSRV_SQLTYPE_VARBINARY('max'))
            ));

PHP sqlsrv从数据库示例插入/读取blob（varbinary）字段

1 个答案: