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| Jelita |
16 October 2012
15 May 2012
RabbitMQ PHP in Ubuntu 12.04
Testing RabbitMQ PHP in Ubuntu 12.04
Examples for AMQP in official PHP site (last check 2012/05/15) not sync with API for PECL 1.0.1.
This is my version to test simple php amqp
emit_log.php:
// Create a connection
$cnn = new AMQPConnection(array('login'=>'guest', 'password'=>'abc123'));
$cnn->connect();
// Create a channel
$ch = new AMQPChannel($cnn);
// Declare a new exchange
$ex = new AMQPExchange($ch);
$ex->setName('logs');
$ex->setType(AMQP_EX_TYPE_FANOUT);
$ex->declare();
// Publish a message to the exchange with a routing key
$message = isset($argv[1]) ? $argv[1] : 'hello world message';
$ex->publish($message, 'routing.key');
receive_log.php:
// Create a connection
$cnn = new AMQPConnection(array('login'=>'guest', 'password'=>'abc123'));
$cnn->connect();
// Create a channel
$ch = new AMQPChannel($cnn);
// Declare a new exchange
$ex = new AMQPExchange($ch);
$ex->setName('logs');
$ex->setType(AMQP_EX_TYPE_FANOUT);
// Create a new queue
$q = new AMQPQueue($ch);
$q->declare();
$q->bind('logs', 'routing.key');
function cb($env, $q) {
print $env->getBody()."\n";
}
// Read from the queue
$msg = $q->consume('cb');
Examples for AMQP in official PHP site (last check 2012/05/15) not sync with API for PECL 1.0.1.
This is my version to test simple php amqp
emit_log.php:
// Create a connection
$cnn = new AMQPConnection(array('login'=>'guest', 'password'=>'abc123'));
$cnn->connect();
// Create a channel
$ch = new AMQPChannel($cnn);
// Declare a new exchange
$ex = new AMQPExchange($ch);
$ex->setName('logs');
$ex->setType(AMQP_EX_TYPE_FANOUT);
$ex->declare();
// Publish a message to the exchange with a routing key
$message = isset($argv[1]) ? $argv[1] : 'hello world message';
$ex->publish($message, 'routing.key');
receive_log.php:
// Create a connection
$cnn = new AMQPConnection(array('login'=>'guest', 'password'=>'abc123'));
$cnn->connect();
// Create a channel
$ch = new AMQPChannel($cnn);
// Declare a new exchange
$ex = new AMQPExchange($ch);
$ex->setName('logs');
$ex->setType(AMQP_EX_TYPE_FANOUT);
// Create a new queue
$q = new AMQPQueue($ch);
$q->declare();
$q->bind('logs', 'routing.key');
function cb($env, $q) {
print $env->getBody()."\n";
}
// Read from the queue
$msg = $q->consume('cb');
Easier to manage rabbitmsq server with the rabbitmq_management than the rabbitmqctl
Example based on rabbitmq Publish/Subscribe tutorial
30 October 2010
Custom Street View panorama using Google Maps v3
Notes and command line script to run when create custom Street View.
Demo
Create initial panorama
* using point and shoot camera take enough pictures to cover all around (8-12 is good enough)
* use stitching software to create equirectangular projection of the panorama
* panorama must be aspect ratio 2:1
Streetview tiles
* if initial panorama size 8192x4096, then for tile size 512x512, we need to create:
* The panorama with a single tile is zoom = 0, then 1,2,3,4
* Name each tile according to its zoom level and position.
* The top left tile is always tile (0,0).
* tile name format = "panorama_z_x_y.jpg".
Javascript code for streetview
Demo
Panorama view of playground at Tasik Titiwangsa, Kuala Lumpur
Note that Google Maps v3 use html5 canvas instead of flash in v2.
Credits
Other blogger already give great explanation to create custom streetview and Google Maps had excellent documentation about this feature. Credits to them.
Before this, I display panorama view using java plugin.
Demo
Create initial panorama
* using point and shoot camera take enough pictures to cover all around (8-12 is good enough)
* use stitching software to create equirectangular projection of the panorama
* panorama must be aspect ratio 2:1
Streetview tiles
* if initial panorama size 8192x4096, then for tile size 512x512, we need to create:
convert ${FN}_5.jpg -resize 8192x4096 ${FN}_4.jpg
convert ${FN}_4.jpg -resize 4096x2048 ${FN}_3.jpg
convert ${FN}_3.jpg -resize 2048x1024 ${FN}_2.jpg
convert ${FN}_2.jpg -resize 1024x512 ${FN}_1.jpg
convert ${FN}_1.jpg -resize 512x256 ${FN}_0.jpg
* The panorama with a single tile is zoom = 0, then 1,2,3,4
* Name each tile according to its zoom level and position.
* The top left tile is always tile (0,0).
* tile name format = "panorama_z_x_y.jpg".
convert ${FN}_5.jpg -crop ${SIZE}x${SIZE} -set filename:tile "%[fx:page.x/${SIZE}]_%[fx:page.y/${SIZE}]" +repage +adjoin "${FN}_5_%[filename:tile].jpg"
convert ${FN}_4.jpg -crop ${SIZE}x${SIZE} -set filename:tile "%[fx:page.x/${SIZE}]_%[fx:page.y/${SIZE}]" +repage +adjoin "${FN}_4_%[filename:tile].jpg"
convert ${FN}_3.jpg -crop ${SIZE}x${SIZE} -set filename:tile "%[fx:page.x/${SIZE}]_%[fx:page.y/${SIZE}]" +repage +adjoin "${FN}_3_%[filename:tile].jpg"
convert ${FN}_2.jpg -crop ${SIZE}x${SIZE} -set filename:tile "%[fx:page.x/${SIZE}]_%[fx:page.y/${SIZE}]" +repage +adjoin "${FN}_2_%[filename:tile].jpg"
convert ${FN}_1.jpg -crop ${SIZE}x${SIZE} -set filename:tile "%[fx:page.x/${SIZE}]_%[fx:page.y/${SIZE}]" +repage +adjoin "${FN}_1_%[filename:tile].jpg"
# resize to tile size and fill neutral color
convert ${FN}_0.jpg -resize 512x512\> -size 512x512 xc:black +swap -composite ${FN}_0_0_0.jpg Javascript code for streetview
function initialize() {
var panorama = new google.maps.StreetViewPanorama(
document.getElementById('streetview'),
{
panoProvider: function(pano) {
return {
location: {
pano: pano
},
copyright: 'helmi03',
links: [],
tiles: {
tileSize: new google.maps.Size(512, 512),
worldSize: new google.maps.Size(8192, 4096),
originHeading: 0,
getTileUrl: function(room, zoom, x, y) {
return 'tt_' +
zoom + '_' + x + '_' + y + '.jpg';
}
}
};
},
pano: 'tt'
}
);
}
Demo
Panorama view of playground at Tasik Titiwangsa, Kuala Lumpur
Note that Google Maps v3 use html5 canvas instead of flash in v2.
Credits
Other blogger already give great explanation to create custom streetview and Google Maps had excellent documentation about this feature. Credits to them.
Before this, I display panorama view using java plugin.
07 September 2010
Running two instances of Mozilla simultaneously
Useful when testing login multiple users for a web application during development
firefox -P profile2 -no-remote
21 April 2010
Ubuntu in ThinkPad X100e
ThinkPad X100e
Few notes while install Ubuntu Lucid:
- I install Lucid after upgrade from Karmic. Downloaded the Karmic AMD64 ISO, and run usb-creator to copy to my USB stick.
- Make sure wireless enabled in BIOS, there is no hardware button to enable wireless! My lappy disabled it by default (I bought it without OS from Digital Mall, Petaling Jaya )
- Get latest wireless driver and install it (wireless driver from Lucid not working for me). You also might want to configure TrackPoint "scroll button".
- Update to the latest X100e BIOS and the latest 10.04 packages and the fglrx driver.This fix issue "pressing function key to adjust brightness hard-lock the machine", "hard-locks if you switch to battery power"
Have issue after install fglrx: most of time CPU usage for Xorg very high.
Love the design. Chose red since big fan of Arsenal FC (even my daughter named Humaira). Keyboard is very nice, that's why prefer this over U series/other brand.
This lappy use AMD Processor, so known quite hot.There is no CD/DVD driver! luckily I rarely use it and have an external USB one (useful to update BIOS). Don't like the 'Delete' key position.
Issues above might not valid anymore after Ubuntu Lucid release (within fortnight)
14 April 2010
Optimize P1 W1MAX Signal
Position is the key. There is difference when P1 modem inside and outside (balcony) of my house.
Inside
Outside
I been using P1 since Aug 2009, and the signal mostly strong when placing the modem inside house. The signal is significantly difference this couple of days, might be due to P1 Network Upgrade Exercise (9-12 March 2010). Anyway hope better signal while streaming Arsenal games tonight :-)
Inside
Outside
I been using P1 since Aug 2009, and the signal mostly strong when placing the modem inside house. The signal is significantly difference this couple of days, might be due to P1 Network Upgrade Exercise (9-12 March 2010). Anyway hope better signal while streaming Arsenal games tonight :-)
11 March 2010
02 February 2010
Tilecache TMS fixes
Error message when working with tilecache TMS:
To fix it, only add one line as below:
An error occurred: The requested layer (1.0.0) does not exist. Available layers are:
To fix it, only add one line as below:
helmi@gandalf:~/Packages/tilecache-2.10/TileCache/Services$ diff -C3 TMS.py TMS_fix.py
*** TMS.py 2010-02-02 16:12:32.000000000 +0800
--- TMS_fix.py 2010-02-02 16:13:06.000000000 +0800
***************
*** 13,18 ****
--- 13,19 ----
elif len(parts) < 2:
return self.serviceCapabilities(host, self.service.layers)
else:
+ parts = parts[-5:]
layer = self.getLayer(parts[1])
if len(parts) < 3:
return self.layerCapabilities(host, layer)
http://twitter.com/helmi03/status/8534440936
28 October 2009
gearman php problem on jaunty
Get this error on my ubuntu jaunty, works perfectly on hardy. I don't have the solution (hope expert out there post solution in comment)
How I install:
some info:
helmi@gandalf:/tmp> php reverse_client.php Sending job ALERT - canary mismatch on efree() - heap overflow detected (attacker 'REMOTE_ADDR not set', file '/tmp/reverse_client.php', line 10)
How I install:
helmi@gandalf:~/Packages/php> sudo pecl install gearman-0.6.0
some info:
helmi@gandalf:~/Packages/php/gearman-0.6.0> phpize Configuring for: PHP Api Version: 20041225 Zend Module Api No: 20060613 Zend Extension Api No: 220060519 helmi@gandalf:~/Packages/php/gearman-0.6.0> echo '<?php phpinfo();' | php| head phpinfo() PHP Version => 5.2.6-3ubuntu4.2 System => Linux gandalf 2.6.28-15-server #52-Ubuntu SMP Wed Sep 9 11:50:50 UTC 2009 i686 Build Date => Aug 21 2009 19:12:00 Server API => Command Line Interface Virtual Directory Support => disabled Configuration File (php.ini) Path => /etc/php5/cli Loaded Configuration File => /etc/php5/cli/php.ini Scan this dir for additional .ini files => /etc/php5/cli/conf.d helmi@gandalf:~/Packages/php/gearman-0.6.0> gearmand -V gearmand 0.10 - https://launchpad.net/gearmand
16 October 2009
Fix IE6 png transparency
Don't know who use IE6 these days (already 2009 lah), but one of my friend need to fix his website. So here the css (modified from a google result)
<!--[if lt IE 7]>
<style>
img {
position: relative;
behavior: expression((this.runtimeStyle.behavior="none")&&(this.pngSet?this.pngSet=true:(this.nodeName == "IMG" && this.src.toLowerCase().indexOf('.png')>-1?(this.runtimeStyle.backgroundImage = "none",
this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.src + "', sizingMethod='image')",
this.src = "http://imgur.com/ZOqET.gif"):(this.origBg = this.origBg? this.origBg :this.currentStyle.backgroundImage.toString().replace('url("','').replace('")',''),
this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.origBg + "', sizingMethod='crop')",
this.runtimeStyle.backgroundImage = "none")),this.pngSet=true));
}
</style>
<![endif]-->
09 October 2009
Inconsistent PHP - I'm sick of it
PHP is inconsistent, sick of it. $needle or $haystack? Which one first? List of php function that inconsistent needle/haystack
So I refer to php manual everytime use these functions, grrr. For vim, i override key binding for 'K' (:help K) - "Run a program to lookup the keyword under the cursor". In .vimrc
and my ~/bin/php_doc
helmi@gandalf:/usr/share/doc/php-doc/html> grep -l needle *| grep ^function | sed 's/^function.//'| sed 's/.html$//'| sed 's/-/_/'
array_search
grapheme_stripos
grapheme_stristr
grapheme_strpos
grapheme_strripos
grapheme_strrpos
grapheme_strstr
iconv_strpos
iconv_strrpos
in_array
mb_stripos
mb_stristr
mb_strpos
mb_strrchr
mb_strrichr
mb_strripos
mb_strrpos
mb_strstr
mb_substr-count
stripos
str_ireplace
stristr
strpos
strrchr
str_replace
strripos
strrpos
strstr
substr_count
So I refer to php manual everytime use these functions, grrr. For vim, i override key binding for 'K' (:help K) - "Run a program to lookup the keyword under the cursor". In .vimrc
autocmd FileType php set keywordprg=~/bin/php_doc
and my ~/bin/php_doc
#!/bin/sh
FN=`echo $1 | sed 's/_/-/g'`
echo ********************** $FN **********************
echo $FN
w3m file:///usr/share/doc/php-doc/html/function.$FN.html
02 October 2009
OpenStreetMap data for Malaysia = impressive progress!
Version 17 Apr 09
Version 24 Sept 09
OpenStreetMap data for Malaysia = impressive progress!
Quite a lot of new road added at Kuala Lumpur for 5 months work.
Map above viewed using udig.
Google Map Maker is available for Malaysia, but don't think it easy for offline usage/internal use (hint:shapefile).
28 August 2009
Which location column more trusted?
You have database from your client with fields state, district (description of locations), and the_geom (latitude/longitude) column. Example of the db
Anyone doing GIS should know that, the state, district fields is duplicate with the_geom since once we know the latitude/longitude we will know the state, district.
The problem is the_geom is not within Selangor, Petaling. Then when do group by st_intersects, the value is wrong since the_geom is refer to other place!
So, need to decide, which location column more trusted?
The latitude/longitude or description of locations.
| state | district | the_geom |
| Selangor | Petaling | POINT(101.497838106615 3.27468487066054) |
Anyone doing GIS should know that, the state, district fields is duplicate with the_geom since once we know the latitude/longitude we will know the state, district.
The problem is the_geom is not within Selangor, Petaling. Then when do group by st_intersects, the value is wrong since the_geom is refer to other place!
So, need to decide, which location column more trusted?
The latitude/longitude or description of locations.
26 June 2009
Mapnik need to know postgis column type
Mapnik need to know postgis column type to render properly. This mapnik xml for style not working for me.
My workaround (only tested on Ubuntu Jaunty) is cast the new column as varchar.
Mapnik is better than MapGuide when rendering road labels
OptimizeRenderingWithPostGIS
<Style name="jalan_casing2">
<Rule>
<Filter>[jenis] = 'lebuhraya'</Filter>
<MaxScaleDenominator>&maxscale_zoom7;</MaxScaleDenominator>
<MinScaleDenominator>&minscale_zoom7;</MinScaleDenominator>
<LineSymbolizer>
<CssParameter name="stroke">#808080</CssParameter>
<CssParameter name="stroke-width">6</CssParameter>
<CssParameter name="stroke-linejoin">round</CssParameter>
<CssParameter name="stroke-linecap">round</CssParameter>
</LineSymbolizer>
</Rule>
</Style>
<Layer name="jalan_lebuhraya" srs="+proj=latlong +datum=WGS84" status="on">
<StyleName>jalan_casing2</StyleName>
<StyleName>jalan_fill</StyleName>
<StyleName>jalan_text</StyleName>
<Datasource>
<Parameter name="type">postgis</Parameter>
<Parameter name="password"></Parameter>
<Parameter name="host">localhost</Parameter>
<Parameter name="port">5432</Parameter>
<Parameter name="user">helmi</Parameter>
<Parameter name="dbname">road</Parameter>
<Parameter name="table">(select * no_jalan, 'lebuhraya' as jenis, the_geom from jalanraya.lebuhraya) as jalan</Parameter>
<Parameter name="estimate_extent">false</Parameter>
<Parameter name="extent">-180,-90,180,89.99</Parameter>
</Datasource>
</Layer>
My workaround (only tested on Ubuntu Jaunty) is cast the new column as varchar.
(select * no_jalan, 'lebuhraya'::varchar as jenis, the_geom from jalanraya.lebuhraya) as jalan
Mapnik is better than MapGuide when rendering road labels
OptimizeRenderingWithPostGIS
27 May 2009
MapGuide 2.1beta
Eager to try beta version, here I log the problem I face and how I solve.
Error msg:
Fix by move directive 'MgHttpHandler.dll' up
http://n2.nabble.com/MGOS-2.0.0-Beta-2-loadfile-error-td1816710.html
Error msg:
httpd.exe: Syntax error on line 127 of C:/Program Files/OSGeo/MapGuide/Web/Apache2/conf/httpd.conf: Cannot load ../Php/MgHttpHandler.dll into server: The specified procedure could not be found.
Fix by move directive 'MgHttpHandler.dll' up
LoadFile ../Php/php5ts.dll
LoadFile ../Php/ACE.dll
LoadFile ../Php/MgHttpHandler.dll # put this directive here, the first one and restart apache service
LoadFile ../Php/MgFoundation.dll
LoadFile ../Php/MgGeometry.dll
LoadFile ../Php/MgMapGuideCommon.dll
LoadFile ../Php/MgMdfModel.dll
LoadFile ../Php/MgMdfParser.dll
LoadFile ../Php/MgPlatformBase.dll
LoadFile ../Php/MgWebApp.dll
http://n2.nabble.com/MGOS-2.0.0-Beta-2-loadfile-error-td1816710.html
26 May 2009
13 May 2009
schema.table to "schema"."table"
PHP
Selected 3 of 3 Lines; 11 of 11 Words; 124 of 124 Bytes
Python
Selected 2 of 2 Lines; 9 of 9 Words; 69 of 69 Bytes
Python=PHP/2
<?php
$st = 'schema.table';
print join('.', array_map(create_function('$a', 'return \'"\'.$a.\'"\';'), explode('.', $st)));
Selected 3 of 3 Lines; 11 of 11 Words; 124 of 124 Bytes
Python
st = 'schema.table'
print '.'.join('"'+i+'"' for i in st.split('.'))
Selected 2 of 2 Lines; 9 of 9 Words; 69 of 69 Bytes
Python=PHP/2
05 May 2009
Trac error - database disk image is malformed
One of my trac page got the error message "database disk image is malformed"
"underlying Trac DB is in serious trouble, may corrupted" - Ticket #6347
How I fix:
"underlying Trac DB is in serious trouble, may corrupted" - Ticket #6347
How I fix:
sqlite3 trac.db .dump | sqlite3 trac2.db
cp trac.db trac.broken.db
cp trac2.db trac.db
04 May 2009
Find files, php5 way
Find files, implemented using iterator.
Example usage:
Previously using php 4:
class RegexFilter extends FilterIterator {
protected $regex;
public function __construct(Iterator $it, $regex) {
parent::__construct($it);
$this->regex = $regex;
}
public function accept() {
return preg_match($this->regex, $this->current());
}
}
function find_files($path, $pattern, $include_dir=FALSE) {
$objects = new RecursiveDirectoryIterator($path);
$objects = new RecursiveIteratorIterator($objects, RecursiveIteratorIterator::SELF_FIRST);
$objects = new RegexFilter($objects, $pattern);
return $objects;
}
Example usage:
$files = find_files('/tmp', '/.py$/');
foreach ($files as $file) {
echo $file;
}
Previously using php 4:
function find_files4($path, $pattern, $callback=null) {
$path = rtrim(str_replace("\\", "/", $path), '/') . '/';
$matches = Array();
$entries = Array();
$dir = dir($path);
while (false !== ($entry = $dir->read())) {
$entries[] = $entry;
}
$dir->close();
$files = array();
foreach ($entries as $entry) {
$fullname = $path . $entry;
if ($entry != '.' && $entry != '..' && is_dir($fullname)) {
$this->find_files($fullname, $pattern, $callback);
} else if (is_file($fullname) && preg_match($pattern, $entry)) {
if (!$callback) {
$files[] = $fullname;
} else {
call_user_func($callback, $fullname);
}
}
}
if (!$callback) {
return $files;
}
}
import data from csv into postgresql
We can use sql command, COPY. But programmer still need to create the table before copy the data. Simple python script to help
then
#!/usr/bin/python
fn = '/home/helmi/world.csv'
columns = file(fn).readline()
print 'create table world (%s text);' % " text,".join(columns.split(','))
print "copy world from '%s' with csv header;" % fn
then
python csv2psql.py | psql mydb
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