added function to parse base64 encoded PDFs (#493)

* added function to parse base64 encoded PDFs

* added information about Base64 PDFs

* Removed Parser::parseB64

Removed because we decided to focus on improving documentation.

* Reverted many changes, kept only the doc part about base64 encoding

Co-authored-by: juan miguel <[email protected]>
Co-authored-by: Konrad Abicht <[email protected]>

DEVELOPER.md

@@ -38,3 +38,20 @@ To check coding styles run:
 To run a static code analysis use:
 
 > make run-phpstan
+
+## Base64 encoded PDFs
+
+If working with [Base64](https://en.wikipedia.org/wiki/Base64) encoded PDFs you might want to parse the PDF without saving the file on disk. This sample will parse the Base64 encoded PDF and extract text from each page.
+
+```php
+<?php
+// Include Composer autoloader if not already done.
+include "vendor/autoload.php";
+
+// Parse Base64 encoded PDF string and build necessary objects.
+$parser = new \Smalot\PdfParser\Parser();
+$pdf = $parser->parseContent(base64_decode($base64PDF));
+
+$text = $pdf->getText();
+echo $text;
+```

README.md

@@ -42,7 +42,9 @@ There is no active development by the author of this library (at the moment), bu
 
 Original PDF References files can be downloaded from this url: http://www.adobe.com/devnet/pdf/pdf_reference_archive.html
 
-**For developers**: Please read [DEVELOPER.md](DEVELOPER.md) for more information about local development of the PDFParser library.
+### For developers
+
+Please read [DEVELOPER.md](DEVELOPER.md) for more information about local development of the PDFParser library. Here you will also find information about how to handle Base63 encoded PDFs.
 
 ## Installation