Android Question concat two variable in byte

[Masoud44]

Hi ...
Is it possible to concat two variables in bytes for php post (var name and var value).
Is it possible to use postbyte in this way? I used combine and join instead of concat, but it didn't work

    Dim var As String="img="
    Dim bmp As Bitmap=ImageView1.Bitmap
    Dim i() As Byte = ImageToBytes(bmp)
    Dim vb() As Byte=var.GetBytes("UTF8")
    Dim data() As Byte = Concat(vb, i)    ' vb+i  such as & for concat two string
    Dim j As HttpJob
    j.Initialize("insertimg", Me) 'jobdon
    j.PostBytes(ServerIP & "insert.php", data)

Sub concat(vname as byte,image as byte) as byte
    dim c as byte
    c=vname+image ??????????
    return c
End Sub

 

[Masoud44]

B4X

    Dim job As HttpJob
    job.Initialize("", Me)
    job.PostBytes("http://localhost/ch01/test.php", concat("img=".GetBytes("utf8"),File.ReadBytes(File.DirAssets,"image.jpg")))

PHP

<?php

$rawPostData = file_get_contents('php://input');

$byteArray = substr($rawPostData,4);

file_put_contents("image.jpg",$byteArray);

echo "Received byte data length: " . strlen((String)$byteArray);
?>

It's perfect , thank you so much