Analysis of the characteristics of PHP class Snoopy_PHP tutorial

Everyone knows what is the PHP class Snoopy in ?

Snoopy is a php class that is used to imitate the functions of a web browser. It Able to complete tasks of obtaining web page content and sending forms.

Some features of PHP Snoopy:

* Convenient to crawl the content of web pages
* Convenient to crawl the text content of web pages (removing HTML tags)
* Convenient to crawl web links
* Support proxy host
* Support basic username/password verification
* Support setting user_agent, referer (source), cookies and header content (header file)
* Supports browser redirection and can control redirection depth
* Can expand links in web pages into high-quality URLs (default)
* Conveniently submit data and obtain return values
* Support tracking HTML Framework (added in v0.92)
* Supports passing cookies when redirecting (added in v0.92)

The correct operation of the PHP class Snoopy requires that your server's PHP version is 4 or above and supports PCRE ( Perl Compatible Regular Expressions), basic LAMP services are supported.

It provides the following interfaces or methods:

fetch($URI)
This method is to crawl the content of the web page, $URI is to crawl the web page The URL is fetched and the results are stored in $this->results. If you capture frames, each frame will be captured and the results will be saved in an array.

fetchtext($URI)
This method is roughly the same as fetch(), except that its result is text, removing HTML tags and other irrelevant information.

fetchform($URI)
This method only returns the form element on the fetched web page.

fetchlinks($URI)
This method only returns links on the crawled web page. By default, the links returned are links containing domain names.

submit($URI,$formvars)
This method submits a form to the specified $URI. $formvars is an array of form variables to be passed.

submittext($URI,$formvars)
This method is basically the same as submit(), but it returns text without html tags and other irrelevant data.

submitlinks($URI)
This method returns links.

The above is the complete introduction to PHP Snoopy, I hope it will be helpful to everyone.