300 * 1024) {
$message = "File is too large. Maximum size is 300 KB.";
} else {
// Verify that it is actually an image
$imageInfo = @getimagesize($file['tmp_name']);
if ($imageInfo === false) {
$message = "Only image files are allowed.";
} else {
$width = $imageInfo[0];
$height = $imageInfo[1];
// Exact dimensions
if ($width != 900 || $height != 600) {
$message = "Image must be exactly 900 × 600 pixels.";
} else {
$allowedTypes = [
IMAGETYPE_JPEG => 'jpg',
IMAGETYPE_PNG => 'png',
IMAGETYPE_WEBP => 'webp'
];
$type = $imageInfo[2];
if (!isset($allowedTypes[$type])) {
$message = "Only JPG, PNG, and WebP images are allowed.";
} else {
// Create upload directory
$uploadDir = __DIR__ . '/uploads/';
if (!is_dir($uploadDir)) {
mkdir($uploadDir, 0755, true);
}
// Generate a safe filename
$filename = bin2hex(random_bytes(16)) . '.' . $allowedTypes[$type];
$destination = $uploadDir . $filename;
if (move_uploaded_file($file['tmp_name'], $destination)) {
$url = 'uploads/' . $filename;
$message =
'Upload successful!
' .
'' .
htmlspecialchars($url) .
'';
} else {
$message = "Could not save the uploaded file.";
}
}
}
}
}
}
}
?>
Image Uploader