PHP sqlsrv insert/read blob (varbinary) field from database example

问题

I will post this sample for anybody who need help with insert file to varbinary(max) field in sqlsrv DB. Also if you need to read from varbinary field, you can see how I made that. This code is working but all your comments and suggestions are welcome. This is sample table:

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

First enter your data for server that you use. If you need to insert file in varbinary field in db:

<?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) );
    }
?>

When you need to read data from varbinary filed in DB you can use this code:

<?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;
?>

If you have any comments or suggestions you are welcome.

来源：https://stackoverflow.com/questions/41631765/php-sqlsrv-insert-read-blob-varbinary-field-from-database-example

标签

php

blob

varbinary