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Category: Programming

PHP 5.2 upload progress meter

dinke 55 Comments

Yesterday I’ve spent considerable amount of time in order to find out more about the most interesting new PHP 5.2 feature – hook for upload progress meter. Except for this link I haven’t found anything else, no php source code example how to make one.

However, after I looked at internal php mailing list archive, I’ve found this thread, still no php data found, but Rasmus mentioned link with an example at http://progphp.com/progress.php. I immediately tried upload and it looked very cool. Then I looked at html source code and noticed one unusual thing there: APC_UPLOAD_PROGRESS hidden field inside of html source. I knew it must be important so I’ve googled for it, and insteresting enough first result was source code of Rasmus example above 🙂

So, I took complete source (I figured out later it is upload meter example made by Rasmus Lerdorf) and quickly tried to make it working under my fresh new installed PHP 5.2.0. Unfortunately, it didn’t work since it needed apc stuff installed. After I looked at apc documentation, I found that I need to grab it from list of pecl dll’s for windows php 5.2 version. Unfortunately, after I’ve downloaded it from here I’ve noticed apc dll is missing there ?!!

Again, I had to google for php_apc.dll and after a while found needed dll available at http://pecl4win.php.net/ext.php/php_apc.dll. In order to make it working, you have to save dll file under php/ext dir (i.e. c:\php\ext on windows) and put this to php.ini:

extension=php_apc.dll

Unfortunately, it still didn’t work, so I’ve looked at apc docs further. Finally on this page I’ve found apc have new “special feature” which is directly related to our new upload feature.

    apc.rfc1867             RFC1867 File Upload Progress hook handler is only available
                            if you compiled APC against PHP 5.2.0 or later.  When enabled
                            any file uploads which includes a field called
                            APC_UPLOAD_PROGRESS before the file field in an upload form
                            will cause APC to automatically create an upload_
                            user cache entry where  is the value of the
                            APC_UPLOAD_PROGRESS form entry.
                            (Default: 0)

After I figured out on my phpinfo page apc.rfc1867 setting is turned off, I’ve added

apc.rfc1867 = on

in php.ini, and after restart was finally able to enjoy new fancy upload progress meter 🙂

upload progress meter

Btw, upload also depend of json turned on as well, but it was already turned on so I didn’t have any more problems.

About the code Rasmus used in his example, I am tired to analyze it more now, but obviously it use Yahoo! User Interface Library to create progress bar and json/apc to control it from php during file upload.

I hope this will be helpful for someone. Enjoy 😉

Curl HTTP Client

dinke 33 Comments

Frequently, in my daytime job I have to fetch data from various url’s, either by sending get or post request, binding to different IP address etc. Long time I used my own socket based HTTP class, although I wasn’t quite happy with perfomances and various other things with it. I already used curl cli tool (mostly for debugging purposes), but didn’t really liked it’s php api, so I’ve decided to take some spare time and make some kind of oop wrapper for it, which should be easier to use for easy stuff like sending get/post request etc.

I use this class several months since then, and it evolved over time whenever I needed some new feature. Since various of my colleagues found it very usefull (some of them even sent me new methods for it), I’ve decided to put it out for public. Recently I submitted a code to phpclasses.org, and today got confirmation that class is officially approved.

Update 03/01/2007
New version 1.1 released with new features: fetch into file, upload, proxy etc.

Update 15/02/2008
New version 1.2 released with few bug fixes. New features are ability to send post string as string argument in send_post_data method, ability to accept gzipped content, close curl session etc.

Update 25/03/2013
Version 2.0 released. Pretty much the same features as old versions, but with updated code in order to match latest PHP changes. Code will be regularly updated on github.

You can download class and example files directly from gitgub https://github.com/dinke/curl_http_client

Here are few usage examples.

<?php
/**
 * @version 2.0
 * @package dinke.net
 * @copyright © 2013 Lampix.net
 * @author Dragan Dinic 
 */

require_once("curl_http_client.php");

$curl = new Curl_HTTP_Client();

//pretend to be Firefox 19.0 on Mac
$useragent = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:19.0) Gecko/20100101 Firefox/19.0";
$curl->set_user_agent($useragent);

//uncomment next two lines if you want to automatically manage cookies
//which will store them to file and send them on each http request
//$cookies_file = "/tmp/cookies.txt";
//$curl->store_cookies($cookies_file);

//Uncomment next line if you want to set credentials for basic http_auth
//$curl->set_credentials($username, $password);

//Uncomment next line if you want to set specific referrer
//$curl->set_referer('http://www.foo.com/referer_url/');

//if you want to send some post data
//form post data array like this one
$post_data = array('login' => 'pera', 'password' => 'joe', 'other_foo_field' => 'foo_value');
//or like a string: $post_data = 'login=pera&password=joe&other_foo_field=foo_value';

//and send request to http://www.foo.com/login.php. Result page is stored in $html_data string
$html_data = $curl->send_post_data("http://www.foo.com/login.php", $post_data);

//You can also fetch data from somewhere using get method!
//Fetch html from url
$html_data = $curl->fetch_url("http://www.foo.com/foobar.php?login=pera&password=joe&other_foo_field=foo_value");

//if you have more than one IP on your server,
//you can also bind to specific IP address like ...
//$bind_ip = "192.168.0.1";
//$curl->fetch_url("http://www.foo.com/login.php", $bind_ip);
//$html_data = $curl->send_post_data("http://www.foo.com/login.php", $post_data, $bind_ip);

//and there are many other things you can do like

//use proxy
//$curl->set_proxy('http://www.proxyurl.com');

//get http response code for last request
//$http_code = $curl->get_http_response_code();

//get last http request duration in sec
//$duration = $curl->get_request_duration();
?>