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Archives: Web Crawler

The Best Methods to Extract Data from AJAX Pages

January 20, 2023 | By David Selden-Treiman

Can web crawlers interpret and extract information from JavaScript or AJAX pages? Absolutely, but it requires using a system that • Read More »

Is Web Crawling Legal?

January 8, 2023 | By David Selden-Treiman

While web crawlers can be useful and even necessary in some cases, using them can also raise significant legal concerns.

Web Crawlers and Proxies: How to Use Proxies with PHP Web Crawlers

Shield Your IP Address: Web Crawlers and Proxies

July 16, 2019 | By David Selden-Treiman

Tired of your web crawlers getting blocked? Try using a free proxy. In this article we explain what proxies are, how to use them, and where to get them.

Web Crawler Development Techniques

Web Crawler Development Techniques

July 15, 2019 | By David Selden-Treiman

Looking for some quick code to build your web crawler in PHP? Here's some code we use a lot here at Potent Pages to make our development a lot easier!

How to create a polite PHP web crawler using robot.txt.

Creating a Polite PHP Web Crawler: Checking robots.txt

May 31, 2018 | By David Selden-Treiman

In this tutorial, we create a PHP website spider that uses the robots.txt file to know which pages we're allowed to download. We continue from our previous tutorials to create a robust web spider and expand on it to check for download crawling permissions.

How to create a simple PHP web crawler to download a website

Creating a Simple PHP Web Crawler

May 24, 2018 | By David Selden-Treiman

Looking to download a site or multiple webpages? Interested in examining all of the titles and descriptions for a site? We created a quick tutorial on building a script to do this in PHP. Learn how to download webpages and follow links to download an entire website.

How to Download a Webpage using PHP and cURL

Downloading a Webpage using PHP and cURL

May 24, 2018 | By David Selden-Treiman

Looking to automatically download webpages? Here's how to download a page using PHP and cURL.

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