|
|
|
Évaluation du client type
Partagez votre opinion avec les autres clients
|
|
|
Le commentaire favorable le plus utile
Le commentaire critique le plus utile
A great introduction and more!
This is the book I wish I'd read last year before struggling with regex to scrape daily weather and snowfall data from my local ski hill's website and place it in a database to plot trends.
The explanations and sample applications were clear and the libraries, available for download at the book's website, are a great help towards simplifying the process of...
Publié le Jui 6 2007 par Colin J. Mccubbin
|
› Voir plus de commentaires 5 étoiles, 4 étoiles |
 |
Good basic intro, with a catch
I picked up this book full of enthusiasm, spiders are just plain cool, they go out and start downloading data for you, reading webpages, and even understanding them a little. My enthusiasm was dashed a little however on page four: You may use any of the scripts in this book for your own personal use, as long as you agree not to redistribute them... and agree not to sell...
Publié le Avril 27 2007 par Paul M. Reinheimer
|
› Voir plus de commentaires 3 étoiles, 2 étoiles, 1 étoiles |
|
|
A great introduction and more!, Jui 6 2007
This is the book I wish I'd read last year before struggling with regex to scrape daily weather and snowfall data from my local ski hill's website and place it in a database to plot trends.
The explanations and sample applications were clear and the libraries, available for download at the book's website, are a great help towards simplifying the process of both downloading (using the cURL functions in php) and extracting the required data from the page. It greatly simplifies the process of isolating specific bits of information and relieves many of the headaches that using Regular Expressions cause.
All in all I found this book to be an inspiration and am now looking forward to rewriting my weather scraper using the techniques described.
Aidez d'autres clients à trouver les commentaires les plus utiles
Ce commentaire vous a-t-il été utile ?
 
|
|
|
|
|
|
Good basic intro, with a catch, Avril 27 2007
I picked up this book full of enthusiasm, spiders are just plain cool, they go out and start downloading data for you, reading webpages, and even understanding them a little. My enthusiasm was dashed a little however on page four: You may use any of the scripts in this book for your own personal use, as long as you agree not to redistribute them... and agree not to sell or create derivative products under any circumstances.. I develop in PHP professionally, and a lot of the code I write ends up getting used somewhere with some sort of a for-profit basis, which pretty effectively prevents me from using any code between the covers (at its strictest reading, Im not sure I can even change the code).
The book does a great job of introducing different sorts of web agents that you can create programatically (more than just spiders) and introduces all sorts of interesting projects along those lines. Throughout the book a series of libraries written by the author are leveraged to make the retrieval and parsing of the various pages much easier. While newer developers will enjoy being able to concentrate on the big picture I found myself itching for more information on the nitty gritty.
Some of the projects explored include: price monitoring, image capturing (want to be your own google image search? :) ), link verification, spiders, and snipers. Each of the different projects received its own chapter, and effectively covered a lot of the topics covered within.
Overall, I would recommend this book to beginner to intermediate PHP developers looking to tackle the world of web agents, its a good primer on the related topics, and at the very least will give you some ideas on the complexities involved. As their skill grows they will probably find them-self either moving past the libraries included with the book, or modifying them greatly. My biggest complaint is the lack of coverage on the robots.txt file, some talk is given to it in terms of blocking robots from your own site, but I didnt see any code that actually dealt with parsing it for your own robot.
Aidez d'autres clients à trouver les commentaires les plus utiles
Ce commentaire vous a-t-il été utile ?
|
|
|
|
|
|
|
Ce produit
|
|
CDN$ 49.95 CDN$ 31.47
Habituellement expédié sous 3 à 5 semaines
| |
|
|
|
Accueil Amazon
