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使用PHP读取PDF文件的版本。

安装

composer require "trekksoft/pdfversion":"~2.0"

示例

简单示例

<?php
use Trekksoft\PdfVersion\File;
use Trekksoft\PdfVersion\VersionDiscovery\HeaderCommentDiscoverer;
use Trekksoft\PdfVersion\VersionDiscovery\UnknownVersionException;

$file = new File('path/to/file.pdf');

$discoverer = new HeaderCommentDiscoverer();

try {
    $version = $discoverer->getVersion($file);
    echo $version->toString();
} catch (UnknownVersionException $e) {
    echo $e->getMessage();
}

尝试多个发现者

$file = new File('path/to/file.pdf');

$discovererChain = new DiscovererChain([
    new HeaderCommentDiscoverer(),
    new YourOwnDiscoverer(),
    new SorryIhaventWrittenAnyOtherDiscoverers(),
]);

$version = $discovererChain->getVersion($file);

使用流

<?php
$stream = new Stream($fileHandle);

$discoverer = new HeaderCommentDiscoverer();
$version = $discoverer->getVersion($stream);

许可证

MIT. 请参阅LICENSE文件。