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Example code of tecnickcom/tc-lib-pdf-image

Informations about the package tc-lib-pdf-image

tc-lib-pdf-image

Image import and embedding utilities for PDF streams.

Latest Stable Version Build Coverage License Downloads

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Overview

tc-lib-pdf-image imports images, converts them to the formats a PDF can embed, and generates the corresponding PDF image objects.
Namespace \Com\Tecnick\Pdf\Image
Author Nicola Asuni [email protected]
License GNU LGPL v3 - see LICENSE
API docs https://tcpdf.org/docs/srcdoc/tc-lib-pdf-image
Packagist https://packagist.org/packages/tecnickcom/tc-lib-pdf-image

Features

Import

PDF integration

Requirements

Installation

Quick Start

Remote images require a host allowlist as well:

For full file-loading options, see the tc-lib-file documentation: https://tcpdf.org/docs/srcdoc/tc-lib-file

Persistent image cache

The processed image data is cached in memory for the lifetime of the Import instance, so the same image imported twice within one document is processed once.

To reuse processed images across documents and processes, inject an external cache. The library defines only the contract, \Com\Tecnick\Pdf\Image\ImageCacheInterface, and the backend (filesystem, APCu, Redis, a PSR-16 cache, ...) is provided by the application:

Pass an implementation to the constructor; the default null keeps the in-memory cache only:

On a miss the processed data is written through to the cache; a hit skips the processing. For local files the key includes the file modification time and size, so editing an image in place invalidates its stale entry.

Security: the cache store is a trust boundary. The stored bytes (image data, palette, ICC profile) are embedded verbatim into the generated PDFs, so use a store only the application can write to. An implementation that serializes entries must deserialize with object restoration disabled, e.g. unserialize($s, ['allowed_classes' => false]).

An example implementation:

Development

Packaging

For system packages, bootstrap with:

Contributing

Contributions are welcome. Please review SECURITY.md.

All versions of tc-lib-pdf-image with dependencies

PHP Build Version
Package Version
Requires php Version ^8.2
ext-zlib Version *
tecnickcom/tc-lib-file Version ^3.9
tecnickcom/tc-lib-pdf-encrypt Version ^2.12
Composer command for our command line client (download client) This client runs in each environment. You don't need a specific PHP version etc. The first 20 API calls are free. Standard composer command

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