imagejpeg is not saving image

Question

Follow the code, then the question.

$localDiretorioFoto = "img/mensagens/";
$img = $_FILES["foto"]["tmp_name"];
$imgg = getimagesize($img);

if($imgg["mime"] == "image/jpeg") {
    $nomeFoto = imagecreatefromjpeg($img);
} else if($imgg["mime"] == "image/png") {
    $nomeFoto = imagecreatefrompng($img);
}

imagejpeg($nomeFoto, $localDiretorioFoto, 50);

I’m trying to save an image, and I’m saving the $name in the comic book, but what it saves is: Resource id #4 and the image is not saved in the folder img/messages/ why?

Should I use header and/or imagedestroy? If so, why?

Answer 1

The function imagecreatefromjpeg and derivatives return the image identifier resource if successful, the Resource id #4 indicates that you are manipulating a resource.

Image is not being saved because you are specifying only directory, image name is omitted.

You might be doing something like this:

if (isset($_FILES['foto'])){
    $path = $_FILES["foto"]["tmp_name"];
    $nomeFoto = $_FILES["foto"]["name"];
    $diretorioFoto = "img/mensagens/". $nomeFoto;
    $imageSize = getimagesize($path);

    switch(strtolower($imageSize['mime'])){
        case 'image/jpeg':
          $img = imagecreatefromjpeg($path);
          break;
        case 'image/png':
          $img = imagecreatefrompng($path);
          break;
        default: die();
    }

    if(imagejpeg($img, $diretorioFoto, 50) === true){
        echo "Imagem salva em ". $diretorioFoto;
    } else {
        echo "Erro ao salvar a imagem em ". $diretorioFoto;
    }
}

The function header is not required in this case as you want to save the image only. The imagedestroy is used to release the memory associated with an object. In this case we could use it like this:

imagedestroy($img);