使用php调整上传图片大小两次

Question

I'm working on script wich resize picture uploaded with PHP twice.

I'm able to do one resize but I would like to do another one.

Here is my php code. (//600 is for the second resize).

//Redimensionons l'image
                                $source = imagecreatefromjpeg($_FILES['new_up']['tmp_name']); // La photo est la source

                                // Les fonctions imagesx et imagesy renvoient la largeur et la hauteur d'une image
                                $largeur_source = imagesx($source);
                                $hauteur_source = imagesy($source);
                                $largeur_destination = 460;
                                    //Regle de trois pour calculer la hauteur;
                                $hauteur_destination = ($hauteur_source * $largeur_destination) / $largeur_source;

                                //600
                                $largeur_destination_600 = 600;
                                $hauteur_destination_600 = ($hauteur_source * $largeur_destination_600) / $largeur_source;

                                // On crée la miniature vide
                                $destination = imagecreatetruecolor($largeur_destination, $hauteur_destination);

                                //600
                                $destination_600 = imagecreatetruecolor($largeur_destination_600, $hauteur_destination_600);

                                // On crée la miniature
                                imagecopyresampled($destination, $source, 0, 0, 0, 0, $largeur_destination, $hauteur_destination, $largeur_source, $hauteur_source);

                                //600
                                imagecopyresampled($destination_600, $source, 0, 0, 0, 0, $largeur_destination, $hauteur_destination, $largeur_source, $hauteur_source);

                                // On edit le tmp_name avec les dimensions miniature
                                imagejpeg($destination,$_FILES['new_up']['tmp_name'] );

                                //600
                                imagejpeg($destination_600,$_FILES['new_up']['tmp_name'] );

                                //Re-name en md5
                                $filename  = basename($_FILES['new_up']['name']);
                                $extension = pathinfo($filename, PATHINFO_EXTENSION);
                                $new       = md5($filename).'.'.$extension;

                                //Enregistrons l'image
                                move_uploaded_file($_FILES['new_up']['tmp_name'], 'uploads/' . $new);
                                echo "L'envoi a bien été effectué !";

                                //600
                                move_uploaded_file($_FILES['new_up']['tmp_name'], 'uploads/600/' . $new);
                                echo "L'envoi a bien été effectué !";

Answer 1

Without much checking your code (so, there may be other issues), I noticed that your order of commands is wrong: you save the first image, then the second (both to the same file!) and then move the file twice.

It should be done like this:

//Re-name en md5
$filename  = basename($_FILES['new_up']['name']);
$extension = pathinfo($filename, PATHINFO_EXTENSION);
$new       = md5($filename).'.'.$extension;// On edit le tmp_name avec les dimensions miniature

imagejpeg($destination, 'uploads/' . $new);

//600
imagejpeg($destination_600, 'uploads/600/' . $new);

So, just save under the new filenames; don't overwrite the uploaded file (PHP will remove it as soon as the script is done).