samayo / bulletproof
A simple and secure PHP image uploader
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Requires
- php: >=8.1.0
- ext-exif: *
Requires (Dev)
- phpunit/phpunit: ^8
README
Bulletproof is a single-class PHP library to upload images securely.
Installation
Install using git
$ git clone https://github.com/samayo/bulletproof.git
Install using Composer
$ composer require samayo/bulletproof:5.0.*
Or download it manually in a ZIP format
Usage
To quickly upload images, use the following HTML & PHP code:
<form method="POST" enctype="multipart/form-data"> <input type="hidden" name="MAX_FILE_SIZE" value="1000000"/> <input type="file" name="pictures" accept="image/*"/> <input type="submit" value="upload"/> </form>
require_once "path/to/bulletproof.php"; $image = new Bulletproof\Image($_FILES); if($image["pictures"]){ $upload = $image->upload(); if($upload){ echo $upload->getPath(); // uploads/cat.gif }else{ echo $image->getError(); } }
For more options or configurations, check the following examples:
Configs
Setting Properties
Methods to set restriction on the image name, size, type, etc.. to upload
// To provide a name for the image. If unused, image name will be auto-generated. $image->setName($name); // To set the min/max image size to upload (in bytes) $image->setSize($min, $max); // To define a list of allowed image types to upload $image->setMime(array('jpeg', 'gif')); // To set the max image height/width to upload (limit in pixels) $image->setDimension($width, $height); // To create a folder name to store the uploaded image, with optional chmod permission $image->setStorage($folderName, $optionalPermission);
Getting Properties
Methods to retrieve image data before/after upload.
// To get the image name $image->getName(); // To get the image size (in bytes) $image->getSize(); // To get the image mime (extension) $image->getMime(); // To get the image width in pixels $image->getWidth(); // To get the image height in pixels $image->getHeight(); // To get image location (folder where images are uploaded) $image->getStorage(); // To get the full image path. ex 'images/logo.jpg' $image->getPath(); // To get the json format value of all the above information $image->getJson();
Extended Configuration Usage
How to use the property setters and getters.
$image = new Bulletproof\Image($_FILES); $image->setName("samayo") ->setMime(["gif"]) ->setStorage(__DIR__ . "/avatars"); if($image["pictures"]){ if($image->upload()){ echo $image->getName(); // samayo echo $image->getMime(); // gif echo $image->getStorage(); // avatars echo $image->getPath(); // avatars/samayo.gif } }
Image Manipulation
To crop, resize or watermak images, use functions stored in src/utils
Creating custom errors
Use php exceptions to define custom error responses
if($image['pictures']){ try { if($image->getMime() !== 'png'){ throw new \Exception('Only PNG image types are allowed'); } // check size, width, height... if(!$image->upload()){ throw new \Exception($image->getError()); } else { echo $image->getPath(); } } catch (\Exception $e){ echo "Error " . $e->getMessage(); } }
What makes this secure?
- Uses
exif_imagetype()
to get the true image mime (.extension
) - Uses
getimagesize()
to check if image has a valid height / width in pixels. - Sanitized images names, strict folder permissions and more...