I'm using resize-class to upload resizing, and other options if needed.
My only problem is that I want to change the name of the image when uploading, so there are no images with the same name and even for privacy reasons.
I want something like:
uniqid (md5 ());
I just want to do it this way and it's already great, I want an easy way to change the name of the image, I saw something like $ _FILES ['file'] ['tmp_name'] however, br> Below is the code of the page where I am uploading and registering in BD
add_product.php
<?php
include_once("funcao/resize-class.php");
if(isset($_POST['foto-cadastrada'])):
$idproduto = $_POST['id'];
$caminho = "imagens/produtos/";
$imagem = $_FILES['imagemupload']['name'];
if(move_uploaded_file($_FILES['imagemupload']['tmp_name'], $caminho . $imagem)){
// Cria tamanhos necessários
$resize_tamanho1 = new resize($caminho . $imagem);
$resize_tamanho2 = new resize($caminho . $imagem);
// Define as medidas que cada tamanho irá ter
$resize_tamanho1->resizeImage(320, 240, 'auto');
$resize_tamanho2->resizeImage(640, 480, 'auto');
// Renomeia imagem para que seja possivel o mesmo nome ter vários tamanhos
$tamanho1 = "tamanho1_".$imagem;
$tamanho2 = "tamanho2_".$imagem;
//Define o caminho, o nome e a qualidade
$resize_tamanho1->saveImage($caminho . $tamanho1, 100);
$resize_tamanho2->saveImage($caminho . $tamanho2, 100);
//apaga imagem original
unlink($caminho . $imagem);
}
$cadastrando = $conn->prepare("INSERT INTO fotos_produtos (id_produto, arquivo, posicao) VALUES (?, ?, ?) ");
$cadastrando->execute(array($idproduto, $imagem, 0));
header("Location: add_produto.php?adicionar-fotos&id=$idproduto");
endif;
?>
resize-class.php
<?php
Class resize {
// *** Class variables
private $image;
private $width;
private $height;
private $imageResized;
function __construct($fileName) {
// *** Open up the file
$this->image = $this->openImage($fileName);
// *** Get width and height
$this->width = imagesx($this->image);
$this->height = imagesy($this->image);
}
## --------------------------------------------------------
private function openImage($file) {
// *** Get extension
$extension = strtolower(strrchr($file, '.'));
switch ($extension) {
case '.jpg':
case '.jpeg':
$img = @imagecreatefromjpeg($file);
break;
case '.gif':
$img = @imagecreatefromgif($file);
break;
case '.png':
$img = @imagecreatefrompng($file);
break;
default:
$img = false;
break;
}
return $img;
}
## --------------------------------------------------------
public function resizeImage($newWidth, $newHeight, $option = "auto") {
// *** Get optimal width and height - based on $option
$optionArray = $this->getDimensions($newWidth, $newHeight, $option);
$optimalWidth = $optionArray['optimalWidth'];
$optimalHeight = $optionArray['optimalHeight'];
// *** Resample - create image canvas of x, y size
$this->imageResized = imagecreatetruecolor($optimalWidth, $optimalHeight);
imagecopyresampled($this->imageResized, $this->image, 0, 0, 0, 0, $optimalWidth, $optimalHeight, $this->width, $this->height);
// *** if option is 'crop', then crop too
if ($option == 'crop') {
$this->crop($optimalWidth, $optimalHeight, $newWidth, $newHeight);
}
}
## --------------------------------------------------------
private function getDimensions($newWidth, $newHeight, $option) {
switch ($option) {
case 'exact':
$optimalWidth = $newWidth;
$optimalHeight = $newHeight;
break;
case 'portrait':
$optimalWidth = $this->getSizeByFixedHeight($newHeight);
$optimalHeight = $newHeight;
break;
case 'landscape':
$optimalWidth = $newWidth;
$optimalHeight = $this->getSizeByFixedWidth($newWidth);
break;
case 'auto':
$optionArray = $this->getSizeByAuto($newWidth, $newHeight);
$optimalWidth = $optionArray['optimalWidth'];
$optimalHeight = $optionArray['optimalHeight'];
break;
case 'crop':
$optionArray = $this->getOptimalCrop($newWidth, $newHeight);
$optimalWidth = $optionArray['optimalWidth'];
$optimalHeight = $optionArray['optimalHeight'];
break;
}
return array('optimalWidth' => $optimalWidth, 'optimalHeight' => $optimalHeight);
}
## --------------------------------------------------------
private function getSizeByFixedHeight($newHeight) {
$ratio = $this->width / $this->height;
$newWidth = $newHeight * $ratio;
return $newWidth;
}
private function getSizeByFixedWidth($newWidth) {
$ratio = $this->height / $this->width;
$newHeight = $newWidth * $ratio;
return $newHeight;
}
private function getSizeByAuto($newWidth, $newHeight) {
if ($this->height < $this->width) {
// *** Image to be resized is wider (landscape)
$optimalWidth = $newWidth;
$optimalHeight = $this->getSizeByFixedWidth($newWidth);
} elseif ($this->height > $this->width) {
// *** Image to be resized is taller (portrait)
$optimalWidth = $this->getSizeByFixedHeight($newHeight);
$optimalHeight = $newHeight;
} else {
// *** Image to be resizerd is a square
if ($newHeight < $newWidth) {
$optimalWidth = $newWidth;
$optimalHeight = $this->getSizeByFixedWidth($newWidth);
} else if ($newHeight > $newWidth) {
$optimalWidth = $this->getSizeByFixedHeight($newHeight);
$optimalHeight = $newHeight;
} else {
// *** Sqaure being resized to a square
$optimalWidth = $newWidth;
$optimalHeight = $newHeight;
}
}
return array('optimalWidth' => $optimalWidth, 'optimalHeight' => $optimalHeight);
}
## --------------------------------------------------------
private function getOptimalCrop($newWidth, $newHeight) {
$heightRatio = $this->height / $newHeight;
$widthRatio = $this->width / $newWidth;
if ($heightRatio < $widthRatio) {
$optimalRatio = $heightRatio;
} else {
$optimalRatio = $widthRatio;
}
$optimalHeight = $this->height / $optimalRatio;
$optimalWidth = $this->width / $optimalRatio;
return array('optimalWidth' => $optimalWidth, 'optimalHeight' => $optimalHeight);
}
## --------------------------------------------------------
private function crop($optimalWidth, $optimalHeight, $newWidth, $newHeight) {
// *** Find center - this will be used for the crop
$cropStartX = ( $optimalWidth / 2) - ( $newWidth / 2 );
$cropStartY = ( $optimalHeight / 2) - ( $newHeight / 2 );
$crop = $this->imageResized;
//imagedestroy($this->imageResized);
// *** Now crop from center to exact requested size
$this->imageResized = imagecreatetruecolor($newWidth, $newHeight);
imagecopyresampled($this->imageResized, $crop, 0, 0, $cropStartX, $cropStartY, $newWidth, $newHeight, $newWidth, $newHeight);
}
## --------------------------------------------------------
public function saveImage($savePath, $imageQuality = "100") {
// *** Get extension
$extension = strrchr($savePath, '.');
$extension = strtolower($extension);
switch ($extension) {
case '.jpg':
case '.jpeg':
if (imagetypes() & IMG_JPG) {
imagejpeg($this->imageResized, $savePath, $imageQuality);
}
break;
case '.gif':
if (imagetypes() & IMG_GIF) {
imagegif($this->imageResized, $savePath);
}
break;
case '.png':
// *** Scale quality from 0-100 to 0-9
$scaleQuality = round(($imageQuality / 100) * 9);
// *** Invert quality setting as 0 is best, not 9
$invertScaleQuality = 9 - $scaleQuality;
if (imagetypes() & IMG_PNG) {
imagepng($this->imageResized, $savePath, $invertScaleQuality);
}
break;
// ... etc
default:
// *** No extension - No save.
break;
}
imagedestroy($this->imageResized);
}
## --------------------------------------------------------
}
?>