Rasmus Lerdorf Books

PHP

By Rasmus Lerdorf

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Programming PHP

By Rasmus Lerdorf, Kevin Tatroe, Peter MacIntyre

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Programming PHP Creating Dynamic Web Pages

By Rasmus Lerdorf, Kevin Tatroe, Peter MacIntyre

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Programming PHP

By Rasmus Lerdorf

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Explains how to use the open source scripting language to process and validate forms, track sessions, generate dynamic images, create PDF files, parse XML files, create secure scripts, and write C...

PHP

By Rasmus Lerdorf

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PHP

By James Guerin, Rasmus Lerdorf

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PHP Pocket Reference

By Rasmus Lerdorf

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Programming PHP

By Rasmus Lerdorf, Kevin Tatroe, Peter MacIntyre

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Php Pocket Reference

By Rasmus Lerdorf

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Programming PHP

By Rasmus Lerdorf, Kevin Tatroe, Peter MacIntyre

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.