I currently have a form on a page set up that allows you to upload a file and it will then run an imagemagick command I have created on the file and output it. I would like for this form to be able to handle multiple images (or all images in a local directory).
I currently have my form.php:
<?php
session_start();
?>
<!DOCTYPE html>
<html>
<head>
<title>Image Framer </title>
</head>
<body>
<?php
if (isset($_SESSION['message']) && $_SESSION['message'])
{
printf('<p><b>%s</b></p>', $_SESSION['message']);
unset($_SESSION['message']);
}
if (isset($_SESSION['final_file']) && $_SESSION['final_file'])
{
// printf('<b>%s</b>', $_SESSION['source_image']);
// printf('<img src=%s />', $_SESSION['source_image']);
// printf('<b>%s</b>', $_SESSION['final_file']);
printf('<img src=%s />', $_SESSION['final_file']);
echo "<br />";
unset($_SESSION['source_image']);
unset($_SESSION['final_file']);
}
?>
<form method="POST" action="process.php" enctype="multipart/form-data">
<br />
<div>
<span>Upload an image to frame:</span>
<input type="file" name="uploadedFile" />
</div>
<input type="submit" name="uploadBtn" value="Upload" />
</form>
</body>
</html>
...my process.php:
<?php
session_start();
require_once 'process-lib.php';
$imageProcessor = new ImageProcessor();
$message = '';
if (isset($_POST['uploadBtn']) && $_POST['uploadBtn'] == 'Upload')
{
if (isset($_FILES['uploadedFile']) && $_FILES['uploadedFile']['error'] === UPLOAD_ERR_OK)
{
// get details of the uploaded file
$fileTmpPath = $_FILES['uploadedFile']['tmp_name'];
$fileName = $_FILES['uploadedFile']['name'];
$fileSize = $_FILES['uploadedFile']['size'];
$fileType = $_FILES['uploadedFile']['type'];
$fileNameCmps = explode(".", $fileName);
$fileExtension = strtolower(end($fileNameCmps));
// sanitize file-name
$newFileName = md5(time() . $fileName) . '.' . $fileExtension;
// check if file has one of the following extensions
$allowedfileExtensions = array('jpg', 'gif', 'png', 'jpeg');
if (in_array($fileExtension, $allowedfileExtensions))
{
// directory in which the uploaded file will be moved
$uploadFileDir = './uploaded_files/';
$dest_path = $uploadFileDir . $newFileName;
if(move_uploaded_file($fileTmpPath, $dest_path))
{
$message ='File is successfully uploaded.';
$imageProcessor->convert($dest_path);
}
else
{
$message = 'There was some error moving the file to upload directory. Please make sure the upload directory is writable by web server.';
}
}
else
{
$message = 'Upload failed. Allowed file types: ' . implode(',', $allowedfileExtensions);
}
}
else
{
$message = 'There is some error in the file upload. Please check the following error.<br>';
$message .= 'Error:' . $_FILES['uploadedFile']['error'];
}
}
$_SESSION['message'] = $message;
header("Location: form.php");
and finally my process-lib.php (containing an imageprocessor class):
<?php
class ImageProcessor {
private $upload_dir;
private $main_file;
private $temp_background_file;
private $background_file;
private $final_file;
public function __construct () {
$this->upload_dir = 'uploaded_files';
$this->main_file = $this->upload_dir . '/main.png';
$this->temp_background_file = $this->upload_dir . '/temp_background.png';
$this->background_file = $this->upload_dir . '/background.png';
$this->final_file = $this->upload_dir . '/final.png';
}
public function convert ($source_image) {
$_SESSION['source_image'] = $source_image;
$_SESSION['final_file'] = $this->final_file;
$exec = "convert " . $source_image . " -resize '500x500>' -write mpr:img0
-set option:distort:viewport '%[fx:max(w,h)]x%[fx:max(w,h)]'
-distort SRT '%[fx:(w>h)*(w/2)],%[fx:(h>w)*(h/2)] %[fx:max(w/h,h/w)] 0'
-fill white -colorize 70 mpr:img0 -gravity center -composite " . $this->final_file;
$output = `$exec`;
}
public function logger ($message) {
file_put_contents('uploader.log', $message);
}
}
I'm new to PHP and most of this code was from a tutorial I found. I am struggling to figure out how to handle multiple images. Ideally it would append '_T' to the name of each input file on output. Whether the multiple images are just uploaded to the upload directory or if they are all zipped up doesnt matter.
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