Davey Shafik Books

The PHP Anthology

By Harry Fuecks, Davey Shafik

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PHP master

By Lorna Mitchell

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Ben shu ji ben han gai le Web kai fa zhong chang jian de wen ti, Du zhe ke yi zhi jie jin ru dao guan zhu de zhu ti jin xing xue xi. Nei rong han gai shi yong PDO fang wen shu ju ku, Zi fu chuan, R...

Php architect s Zend PHP 5 Certification Study Guide

By Davey Shafik, Ben Ramsey

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PHP Pocket Reference

By Davey Shafik

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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.