Upload multiple images using PHP class - php

Question

I need to inquire that i am using PHP class to upload single image. below I have the class and PHP code to upload image. it is working fine for single image upload, and Now I want to upload multiple image using the same class, I used for loop for this purpose and it gives some error. please brief where i am doing wrong
HTML for multiple images
<input type="file" name="photo[]" placeholder="Photo">
code for multiple images
for($i=0;$i<$count;$i++ ) {
if(isset($_FILES['photo']['tmp_name'][$i]) && ($_FILES['photo']['tmp_name'][$i]!="")){
$uploadImage = new UploadImage;
echo $uploadImage->upload('photo', null, '../uploads/', 150, 0, '../uploads/thumb/', 75, 75);
}
}
Below code is for single image upload which is working fine.
HTML
<input type="file" name="photo" placeholder="Photo">
code
if(isset($_FILES['photo']['tmp_name']) && ($_FILES['photo']['tmp_name']!="")){
$uploadImage = new UploadImage;
$obj['image'] = $uploadImage->upload('photo', null, '../uploads/', 150, 0, '../uploads/thumb/', 75, 75);
}
Class.php
<?php
class UploadImage {
public function upload($imageField, $imageFieldIndex = null, $strLargePath = null, $largeWidth = 0, $largeHeight = 0, $strThumbPath = null, $thumbWidth = 0, $thumbHeight = 0)
{
$noLarge = false;
$noThumb = false;
if(empty($strLargePath)) {
$noLarge = true;
}
if(empty($strThumbPath)) {
$noThumb = true;
}
echo $fileName = isset($imageFieldIndex) ? stripslashes($_FILES[$imageField]['name'][$imageFieldIndex]) : stripslashes($_FILES[$imageField]['name']);
$fileTempName = isset($imageFieldIndex) ? $_FILES[$imageField]['tmp_name'][$imageFieldIndex] : $_FILES[$imageField]['tmp_name'];
$extension = $this->getExtension($fileName);
$imageName = time().$imageFieldIndex.'.'.$extension;
if($noLarge == false) {
$this->resize($largeWidth, $largeHeight, $fileTempName, $imageName, $strLargePath);
}
if($noThumb == false) {
$this->resize($thumbWidth, $thumbHeight,$fileTempName, $imageName, $strThumbPath);
}
return $imageName;
}
private function getExtension($strInput)
{
$i = strrpos($strInput,".");
if (!$i){return null;}
$j = strlen($strInput) - $i;
$output = substr($strInput, $i + 1, $j);
return $output;
}
private function resize($newWidth, $newHeight, $imageTempName, $imageName, $savePath) {
$image = new ResizeImage;
$image->newWidth = $newWidth;
$image->newHeight = $newHeight;
$image->imageTempName = $imageTempName; // Full Path to the file
$image->ratio = true; // Keep Aspect Ratio?
// Name of the new image (optional) - If it's not set a new will be added automatically
$image->imageName = substr($imageName, 0, strrpos($imageName, '.'));
/* Path where the new image should be saved. If it's not set the script will output the image without saving it */
$image->savePath = $savePath;
$process = $image->resize();
if($process['result'] && $image->savePath)
{
//echo 'The new image ('.$process['new_file_path'].') has been saved.';
}
}
}
/*-------------------------------- Image resize Class -----------------------------------------*/
class ResizeImage {
var $imageTempName;
var $newWidth;
var $newHeight;
var $ratio;
var $imageName;
var $savePath;
function resize(){
if(!file_exists($this->imageTempName)){
exit("File ".$this->imageTempName." does not exist.");
}
$info = GetImageSize($this->imageTempName);
if(empty($info)){
exit("The file ".$this->imageTempName." doesn't seem to be an image.");
}
$width = $info[0];
$height = $info[1];
$mime = $info['mime'];
/* Keep Aspect Ratio? */
$this->ratio = true;
if($this->ratio){
$thumb = ($this->newWidth < $width && $this->newHeight < $height) ? true : false; // Thumbnail
$largeImage = ($this->newWidth >= $width || $this->newHeight >= $height) ? true : false; // Large Image
if($thumb){
if($this->newWidth > $this->newHeight){
$x = ($width / $this->newWidth);
$this->newHeight = ($height / $x);
}else {
$x = ($height / $this->newHeight);
$this->newWidth = ($width / $x);
}
}else if($largeImage){
if($this->newWidth >= $width){
$x = ($this->newWidth / $width);
$this->newHeight = ($height * $x);
}
else if($this->newHeight >= $height){
$x = ($this->newHeight / $height);
$this->newWidth = ($width * $x);
}
}
}
// What sort of image?
$type = substr(strrchr($mime, '/'), 1);
switch ($type){
case 'jpeg':
$image_create_func = 'ImageCreateFromJPEG';
$image_save_func = 'ImageJPEG';
$newImageExt = 'jpg';
break;
case 'jpg':
$image_create_func = 'ImageCreateFromJPEG';
$image_save_func = 'ImageJPEG';
$newImageExt = 'jpg';
break;
case 'png':
$image_create_func = 'ImageCreateFromPNG';
$image_save_func = 'ImagePNG';
$newImageExt = 'png';
break;
case 'bmp':
$image_create_func = 'ImageCreateFromBMP';
$image_save_func = 'ImageBMP';
$newImageExt = 'bmp';
break;
case 'gif':
$image_create_func = 'ImageCreateFromGIF';
$image_save_func = 'ImageGIF';
$newImageExt = 'gif';
break;
case 'vnd.wap.wbmp':
$image_create_func = 'ImageCreateFromWBMP';
$image_save_func = 'ImageWBMP';
$newImageExt = 'bmp';
break;
case 'xbm':
$image_create_func = 'ImageCreateFromXBM';
$image_save_func = 'ImageXBM';
$newImageExt = 'xbm';
break;
default:
$image_create_func = 'ImageCreateFromJPEG';
$image_save_func = 'ImageJPEG';
$newImageExt = 'jpg';
}
// New Image
$image_c = imagecreatetruecolor($this->newWidth, $this->newHeight);
$newImage = $image_create_func($this->imageTempName);
imagealphablending($image_c, false);
imagesavealpha($image_c,true);
$transparent = imagecolorallocatealpha($image_c, 255, 255, 255, 127);
imagefilledrectangle($image_c, 0, 0, $this->newWidth, $this->newHeight, $transparent);
ImageCopyResampled($image_c, $newImage, 0, 0, 0, 0, $this->newWidth, $this->newHeight, $width, $height);
if($this->savePath)
{
if($this->imageName)
{
$new_name = $this->imageName.'.'.$newImageExt;
}
else
{
$new_name = $this->newImageName(basename($this->imageTempName)).'_resized.'.$newImageExt;
}
$save_path = $this->savePath.$new_name;
}
else
{
/* Show the image without saving it to a folder */
header("Content-Type: ".$mime);
$image_save_func($image_c);
$save_path = '';
}
$process = $image_save_func($image_c, $save_path);
return array('result' => $process, 'new_file_path' => $save_path);
}
function newImageName($filename)
{
$string = trim($filename);
$string = strtolower($string);
$string = trim(ereg_replace("[^ A-Za-z0-9_]", " ", $string));
$string = ereg_replace("[ \t\n\r]+", "_", $string);
$string = str_replace(" ", '_', $string);
$string = ereg_replace("[ _]+", "_", $string);
return $string;
}
}
?>

Answer 1

Add the image index to the upload function
for($i=0;$i<$count;$i++ ) {
if(isset($_FILES['photo']['tmp_name'][$i]) && ($_FILES['photo']['tmp_name'][$i]!="")){
$uploadImage = new UploadImage;
echo $uploadImage->upload('photo', $i, '../uploads/', 150, 0, '../uploads/thumb/', 75, 75);
//...................................^ here
}
}

Answer 2

I think this is the way it can be done.
<form action="file-upload.php" method="post" enctype="multipart/form-data">
Send these files:<br />
<input name="userfile[]" type="file" /><br />
<input name="userfile[]" type="file" /><br />
<input type="submit" value="Send files" />
</form>
And for the script you can upload multiple files using array.
Array
(
[0] => Array
(
[name] => foo.txt
[type] => text/plain
[tmp_name] => /tmp/phpYzdqkD
[error] => 0
[size] => 123
)
[1] => Array
(
[name] => bar.txt
[type] => text/plain
[tmp_name] => /tmp/phpeEwEWG
[error] => 0
[size] => 456
)
)
A quick function that would convert the $_FILES array to the cleaner (IMHO) array.
<?php
function reArrayFiles(&$file_post) {
$file_ary = array();
$file_count = count($file_post['name']);
$file_keys = array_keys($file_post);
for ($i=0; $i<$file_count; $i++) {
foreach ($file_keys as $key) {
$file_ary[$i][$key] = $file_post[$key][$i];
}
}
return $file_ary;
}
?>
Now I can do the following:
<?php
if ($_FILES['upload']) {
$file_ary = reArrayFiles($_FILES['ufile']);
foreach ($file_ary as $file) {
print 'File Name: ' . $file['name'];
print 'File Type: ' . $file['type'];
print 'File Size: ' . $file['size'];
}
}
?>
Head over here for more explanation.