Author: shkhan

the fact of real shit
by shkhan
Posted on

going to change ZF2.4.9 core

I decided to change ZF 2.4.9 core. I know its a wired decision. But I don’t have any choice, cause they didn’t provide any release for PHP 7x. But the change will noted in this site by adding post for future.

Today I’m changing –

class: Zend\Validator\EmailAddress
function: idnToAscii($email) and
function: idnToUtf8($email)

Previous (original) code –

protected function idnToAscii($email)
{
if (extension_loaded(‘intl’)) {
return (idn_to_ascii($email) ?: $email);
}
return $email;
}

protected function idnToUtf8($email)
{
if (extension_loaded(‘intl’)) {
return idn_to_utf8($email);
}
return $email;
}

New Code

protected function idnToAscii($email)
{
if (extension_loaded(‘intl’)) {
return (idn_to_ascii($email, IDNA_DEFAULT, INTL_IDNA_VARIANT_UTS46) ?: $email);
}
return $email;
}

protected function idnToUtf8($email)
{
if (extension_loaded(‘intl’)) {
return idn_to_utf8($email, IDNA_DEFAULT, INTL_IDNA_VARIANT_UTS46);
}
return $email;
}

I took this decision for –

https://bugs.php.net/bug.php?id=75609 and
https://wiki.php.net/rfc/deprecate-and-remove-intl_idna_variant_2003

 

Posted in php, zf2Tagged , , ,
by shkhan
Posted on

change mysql data directory ubuntu 17.xx

Follow https://www.digitalocean.com/community/tutorials/how-to-move-a-mysql-data-directory-to-a-new-location-on-ubuntu-16-04
NOTE: you can skip empty directory (/var/lib/mysql/mysql) creation script in ubuntu 17.xx version.

Then try to start mysql server. If fail then log messages are telling you that /usr/sbin/mysqld needs read (r) access to open /proc/14767/status, /sys/devices/system/node/ (trailing slash because it wants to read the directory), and /proc/14767/task/14767/mem. The file to edit is /etc/apparmor.d/usr.sbin.mysqld.

In my case I solved the problem by adding these lines somewhere in the middle (with two spaces in front of each):

/proc/*/status r,
/sys/devices/system/node/ r,
/sys/devices/system/node/** r,

Reload apparmor:

sudo apparmor_parser -r /etc/apparmor.d/usr.sbin.mysqld
sudo /etc/init.d/apparmor reload

After doing that, try starting MySQL, and if you get more errors, add those files too and try again.

In some case mysql may fail to start for assoc i/o error. So, you may need to disable this settings by adding following line into /etc/mysql/mysql.conf.d/mysqld.cnf

innodb_use_native_aio=0

Another note about file permission of data directory is, “mysql” user should have permission into every directory of that path. Like if new data directory is “/media/myusb01/mysql-data” then “mysql” user should read access of “/media” folder and “/media/myusb01” folder and read write access at new data directory.

Hope mysql will start now.

Posted in linux, mysql, ubuntu
by shkhan
Posted on

network adapter at guest [ubuntu] while setup host only network at virtualbox

I’m trying to setup host only network at virtualbox by following http://christophermaier.name/2010/09/01/host-only-networking-with-virtualbox/

but facing to choice network adapter at guest [ubuntu]

To see a list of the adapters your virtual machine can access, use this:

ls /sys/class/net

This will show you the interface names. For example, with two network adapters set up, my Ubuntu guest looks like this.

eth1 eth2 lo

To see a list of active network with IP address assigned

ifconfig

So you can easily guess what network adapter should use for host only network.

Well in a brand new ubuntu machine the permanent network save is not work in the way described in that article. For this you need to install ifupdown or ifupdown2 package

apt install ifupdown2

After install execute following command

ifup eth1

Then reboot.

Posted in linux, ubuntu, virtualbox
by shkhan
Posted on

JavaScript class encaptulation

My favorite JavaScript class structure –

(function(exports) {
	"use strict";
	var mySuperDupparClassOfSHKR=function(pValue){
	var myPrivateValue;
	this.setValue=function(pValue){
		myPrivateValue=pValue;
		return this;
	};
	var __construct = function(that, pValue) {
		return that.setValue(pValue);
		}(this, pValue);
	};
	exports.SuperDupparClass = {
		create : function(pValue) {
			if(typeof pValue==='undefined') throw 'please provide a value, unable to continue...';
			return new mySuperDupparClassOfSHKR(pValue);
		},
	};
})(this);

Usage as follows –

var myObj;
jQuery(document).ready(function($) {
	try{
		myObj=SuperDupparClass.create('any value');
	}catch(e){
		alert('ERR: '+e);
	}
});

 

Posted in javascript, study, webdevelopmentTagged , , ,
by shkhan
Posted on

Install PHP-Redis on PHP5.6 Centos 7

Assume that PHP 5.6 installed and working properly.

Now execute following command

sudo yum install php56w-devel
sudo yum install git-core
git clone git://github.com/nicolasff/phpredis.git
cd phpredis/
sudo phpize
sudo ./configure
sudo make
sudo make install
sudo echo "extension=redis.so">/etc/php.d/redis.ini
sudo apachectl restart

Its pretty simple!

Posted in linux, php, redis
by shkhan
Posted on

PHP Archive (.phar) Attaching with ZF2

PHP archive aka phar is a stream wrapper which can serve any packaged PHP library efficiently.

To create a phar document for a library (not for web output or for cli executable) is simple as pie like –

$phar = new \Phar('target-location-where-to-save.phar', 
 FilesystemIterator::CURRENT_AS_FILEINFO |
 FilesystemIterator::KEY_AS_FILENAME, 'optionalPharAliasName');
$phar->buildFromDirectory('source/lib/path');

After creating phar document, file can use to attach ZF2 standard autoloader as follows –

Zend\Loader\AutoloaderFactory::factory(array(
 'Zend\Loader\StandardAutoloader' => array(
   'autoregister_zf' => true,
   'namespaces' => array(
          'YourProjectNamespace'=>'phar:///absolute/path/of/project/phar/file.phar',
        ),
     ),
   ));

This works as simple folder of your file system. Easily distributable, packaged.

Posted in php, webdevelopmentTagged , , , , , , ,
by shkhan
Posted on

PHP Debug efficiently with debug_backtrace

Hello today I write a small function for debug your PHP code. Its simple but powerful –

$bkTrace=function ($stack) {
 $output = '';
 
 $stackLen = count($stack);
 for ($i = 1; $i < $stackLen; $i++) {
 $entry = $stack[$i];
 
 $func = (array_key_exists('class', $entry)?$entry['class'].'\\':'').$entry['function'] . '(';
 $argsLen = count($entry['args']);
 for ($j = 0; $j < $argsLen; $j++) {
 $my_entry = $entry['args'][$j];
 if (is_string($my_entry)) {
 $func .= $my_entry;
 }
 if ($j < $argsLen - 1) $func .= ', ';
 }
 $func .= ')';
 
 $entry_file = 'NO_FILE';
 if (array_key_exists('file', $entry)) {
 $entry_file = $entry['file'];
 }
 $entry_line = 'NO_LINE';
 if (array_key_exists('line', $entry)) {
 $entry_line = $entry['line'];
 }
 $output .= $entry_file . ':' . $entry_line . ' - ' . $func . PHP_EOL;
 }
 return $output;
 };
 echo '<pre>'.$bkTrace(debug_backtrace()); exit();

 

Also for response with warning you can use above method like below –

trigger_error(‘warning @’.$bkTrace(debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 2)), E_USER_WARNING);

 

nJoy debugging…


			


			

				Posted in php, webdevelopmentTagged , , 2 Comments on PHP Debug efficiently with debug_backtrace			


		

		

	









	

	
		

			

				

					
 by shkhan
				

				

					
Posted on 
				

			

		

		

		

			
			

				
Image size for social media (like facebook, twitter, google+, linkedin, pinterest, instagram, youtube) profile and other picture
							


			

				
As we faced many problem to work in social media about size of profile picture to use. Here is the dimension that analysis by renowned email marketing tools provider constant contact. Also I add some value to enrich the list –


Facebook

 ————————

Cover photo 815×315

Profile photo 180×180 (display area 160×160)

Fan page profile photo 200×200 (display area 176×176)

Tab 111×74

Link Image 1200×627

Image 1200×1200

Highlighted/milestone image 1200×717


Twitter

 ———————–

Header 1500×500

Profile photo 400×400

Image display size 880×440 (recommended)


Google+

 —————————

Profile photo 250×250

Cover photo 2120×1192

Shared image 800×600


LinkedIn

 ————————-

Profile photo 200×200

Cover photo 646×220


Pinterest

 ————————–

Profile photo 600×600

Pins 600xINFINITE

Board thumbnail 222×150


Instagram

 ————————

Profile photo 161×161

Image viewed on desktop in lightbox as 612×612

Image feed 510×510


YouTube

 —————————

Profile photo 800×800

Channel art 2560×1224

Custom video thumbnail 1280×720


* all dimensions listed in pixels


Hope it may help you to engineering the web for your client.

			


			

				Posted in internet, Standard, webdevelopmentTagged , , , , , , , , , , , , 			


		

		

	









	

	
		

			

				

					
 by shkhan
				

				

					
Posted on 
				

			

		

		

		

			
			

				
Batch file that will create skeleton directories of ZF2
							


			

				
After a long time write a batch file to create a skeleton directory for Zend Framework 2 module. Hope it may help someone who work in windows 7 OS


@echo off
@setlocal ENABLEDELAYEDEXPANSION
@rem this file will create required empty directory of a ZF2 module
@rem author Shahadat Hossain Khan (shahadathossain.com)
ECHO.
IF "%~1"=="" GOTO noModuleName
SET modName=%~1
CALL :UCase %modName% _UCMN
CALL :LCase %modName% _LCMN
IF NOT EXIST "%_UCMN%" (
 MKDIR %_UCMN%
 MKDIR %_UCMN%\config
 MKDIR %_UCMN%\src
 MKDIR %_UCMN%\src\%_UCMN%
 MKDIR %_UCMN%\src\%_UCMN%\Controller
 MKDIR %_UCMN%\src\%_UCMN%\Form
 MKDIR %_UCMN%\src\%_UCMN%\Model
 MKDIR %_UCMN%\view\
 MKDIR %_UCMN%\view\%_LCMN%
 MKDIR %_UCMN%\view\%_LCMN%\%_LCMN%
 ECHO Directory created. Named - %modName%
) else (
 ECHO Directory already exist!
) 
GOTO:EOF
:noModuleName
ECHO You must provide module name along with this command as 1st argument
GOTO:EOF


:LCase
:UCase
:: Syntax: CALL :UCase _VAR1 _VAR2
:: Syntax: CALL :LCase _VAR1 _VAR2
:: _VAR1 = Variable NAME whose VALUE is to be converted to upper/lower case
:: _VAR2 = NAME of variable to hold the converted value
:: Note: Use variable NAMES in the CALL, not values (pass "by reference")
set varX=%1
set frstChar=%varX:~0,1%
set rstChar=%varX:~1%
FOR %%Z IN (Aa Bb Cc Dd Ee Ff Gg Hh Ii Jj Kk Ll Mm Nn Oo Pp Qq Rr Ss Tt Uu Vv Ww Xx 
Yy Zz) DO (
 SET pX=%%Z
 set c1=!pX:~0,1!
 set c2=!pX:~1,1!
 IF /I "%0"==":UCase" (
 if %frstChar%==!c1! SET _Abet=!c1!
 if %frstChar%==!c2! SET _Abet=!c1!
 )
 IF /I "%0"==":LCase" (
 if %frstChar%==!c1! SET _Abet=!c2!
 if %frstChar%==!c2! SET _Abet=!c2!
 )
)
SET _Word_Rtrn=%_Abet%%rstChar%
SET %2=%_Word_Rtrn%
GOTO:EOF


endlocal


Usage


<your batch file name> <the module name>

			


			

				Posted in php, webdevelopment, windowsTagged , , , , , , ,