NAME:
Snoopy - the PHP net client v2.0.0
SYNOPSIS:
include "Snoopy.class.php";
$snoopy = new Snoopy;
$snoopy->fetchtext("http://www.php.net/");
print $snoopy->results;
$snoopy->fetchlinks("http://www.phpbuilder.com/");
print $snoopy->results;
$submit_url = "http://lnk.ispi.net/texis/scripts/msearch/netsearch.html";
$submit_vars["q"] = "amiga";
$submit_vars["submit"] = "Search!";
$submit_vars["searchhost"] = "Altavista";
$snoopy->submit($submit_url,$submit_vars);
print $snoopy->results;
$snoopy->maxframes=5;
$snoopy->fetch("http://www.ispi.net/");
echo "<PRE>\n";
echo htmlentities($snoopy->results[0]);
echo htmlentities($snoopy->results[1]);
echo htmlentities($snoopy->results[2]);
echo "</PRE>\n";
$snoopy->fetchform("http://www.altavista.com");
print $snoopy->results;
DESCRIPTION:
What is Snoopy?
Snoopy is a PHP class that simulates a web browser. It automates the
task of retrieving web page content and posting forms, for example.
Some of Snoopy's features:
* easily fetch the contents of a web page
* easily fetch the text from a web page (strip html tags)
* easily fetch the the links from a web page
* supports proxy hosts
* supports basic user/pass authentication
* supports setting user_agent, referer, cookies and header content
* supports browser redirects, and controlled depth of redirects
* expands fetched links to fully qualified URLs (default)
* easily submit form data and retrieve the results
* supports following html frames (added v0.92)
* supports passing cookies on redirects (added v0.92)
REQUIREMENTS:
Snoopy requires PHP with PCRE (Perl Compatible Regular Expressions),
and the OpenSSL extension for fetching HTTPS requests.
CLASS METHODS:
fetch($URI)
-----------
This is the method used for fetching the contents of a web page.
$URI is the fully qualified URL of the page to fetch.
The results of the fetch are stored in $this->results.
If you are fetching frames, then $this->results
contains each frame fetched in an array.
fetchtext($URI)
---------------
This behaves exactly like fetch() except that it only returns
the text from the page, stripping out html tags and other
irrelevant data.
fetchform($URI)
---------------
This behaves exactly like fetch() except that it only returns
the form elements from the page, stripping out html tags and other
irrelevant data.
fetchlinks($URI, [$img = false])
----------------
This behaves exactly like fetch() except that it only returns
the links from the page. By default, relative links are
converted to their fully qualified URL form.
Support SRC, HREF and URL tags attribute.
$img is boolean attribute for fetch only image link
(true - for enable advanced filter)
submit($URI,$formvars)
----------------------
This submits a form to the specified $URI. $formvars is an
array of the form variables to pass.
submittext($URI,$formvars)
--------------------------
This behaves exactly like submit() except that it only returns
the text from the page, stripping out html tags and other
irrelevant data.
submitlinks($URI)
----------------
This behaves exactly like submit() except that it only returns
the links from the page. By default, relative links are
converted to their fully qualified URL form.
CLASS VARIABLES: (default value in parenthesis)
$host the host to connect to
$port the port to connect to
$proxy_host the proxy host to use, if any
$proxy_port the proxy port to use, if any
proxy can only be used for http URLs, but not https
$agent the user agent to masqerade as (Snoopy v0.1)
$referer referer information to pass, if any
$cookies cookies to pass if any
$rawheaders other header info to pass, if any
$maxredirs maximum redirects to allow. 0=none allowed. (5)
$offsiteok whether or not to allow redirects off-site. (true)
$expandlinks whether or not to expand links to fully qualified URLs (true)
$user authentication username, if any
$pass authentication password, if any
$accept http accept types (image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*)
$source string source of webpage before $results changed other functions
$error where errors are sent, if any
$response_code responde code returned from server
$headers headers returned from server
$maxlength max return data length
$read_timeout timeout on read operations
set to 0 to disallow timeouts
$timed_out true if a read operation timed out (requires PHP 4 Beta 4+)
$maxframes number of frames we will follow
$status http status of fetch
$temp_dir temp directory that the webserver can write to. (/tmp)
$cafile name of a file with CA certificate(s)
$capath name of a correctly hashed directory with CA certificate(s)
if either $cafile or $capath is set, SSL certificate
verification is enabled
EXAMPLES:
Example: fetch a web page and display the return headers and
the contents of the page (html-escaped):
include "Snoopy.class.php";
$snoopy = new Snoopy;
$snoopy->user = "joe";
$snoopy->pass = "bloe";
if($snoopy->fetch("http://www.slashdot.org/"))
{
echo "response code: ".$snoopy->response_code."<br>\n";
while(list($key,$val) = each($snoopy->headers))
echo $key.": ".$val."<br>\n";
echo "<p>\n";
echo "<PRE>".htmlspecialchars($snoopy->results)."</PRE>\n";
}
else
echo "error fetching document: ".$snoopy->error."\n";
Example: submit a form and print out the result headers
and html-escaped page:
include "Snoopy.class.php";
$snoopy = new Snoopy;
$submit_url = "http://lnk.ispi.net/texis/scripts/msearch/netsearch.html";
$submit_vars["q"] = "amiga";
$submit_vars["submit"] = "Search!";
$submit_vars["searchhost"] = "Altavista";
if($snoopy->submit($submit_url,$submit_vars))
{
while(list($key,$val) = each($snoopy->headers))
echo $key.": ".$val."<br>\n";
echo "<p>\n";
echo "<PRE>".htmlspecialchars($snoopy->results)."</PRE>\n";
}
else
echo "error fetching document: ".$snoopy->error."\n";
Example: showing functionality of all the variables:
include "Snoopy.class.php";
$snoopy = new Snoopy;
$snoopy->proxy_host = "my.proxy.host";
$snoopy->proxy_port = "8080";
$snoopy->agent = "(compatible; MSIE 4.01; MSN 2.5; AOL 4.0; Windows 98)";
$snoopy->referer = "http://www.microsnot.com/";
$snoopy->cookies["SessionID"] = 238472834723489l;
$snoopy->cookies["favoriteColor"] = "RED";
$snoopy->rawheaders["Pragma"] = "no-cache";
$snoopy->maxredirs = 2;
$snoopy->offsiteok = false;
$snoopy->expandlinks = false;
$snoopy->user = "joe";
$snoopy->pass = "bloe";
if($snoopy->fetchtext("http://www.phpbuilder.com"))
{
while(list($key,$val) = each($snoopy->headers))
echo $key.": ".$val."<br>\n";
echo "<p>\n";
echo "<PRE>".htmlspecialchars($snoopy->results)."</PRE>\n";
}
else
echo "error fetching document: ".$snoopy->error."\n";
Example: fetched framed content and display the results
include "Snoopy.class.php";
$snoopy = new Snoopy;
$snoopy->maxframes = 5;
if($snoopy->fetch("http://www.ispi.net/"))
{
echo "<PRE>".htmlspecialchars($snoopy->results[0])."</PRE>\n";
echo "<PRE>".htmlspecialchars($snoopy->results[1])."</PRE>\n";
echo "<PRE>".htmlspecialchars($snoopy->results[2])."</PRE>\n";
}
else
echo "error fetching document: ".$snoopy->error."\n";
COPYRIGHT:
Copyright(c) 1999,2000 ispi. All rights reserved.
This software is released under the GNU General Public License.
Please read the disclaimer at the top of the Snoopy.class.php file.
THANKS:
Special Thanks to:
Peter Sorger <sorgo@cool.sk> help fixing a redirect bug
Andrei Zmievski <andrei@ispi.net> implementing time out functionality
Patric Sandelin <patric@kajen.com> help with fetchform debugging
Carmelo <carmelo@meltingsoft.com> misc bug fixes with frames