PHP - Print any variable easily

You often need to print some PHP variable right into the HTML code, but the variable is out of your current scope. Familiar problem, isn't it?

Here is a bright solution: PHP function that prints any global variable:


function print_var($var = 'domain', $url = '')
{
  global $$var, $$$var;
  if ($url != '')
    echo("<a href=\"$url\">${$var}</a>");
  else
    echo(${$var});
}


Moreover, you can pass some URL as a second parameter, and your variable becomes a clicable link :)

Some examples:


<?php print_var('page')?>
<?php print_var('domain', '/') ?>
<?php print_var('software', '/download/') ?>
<?php print_var('author', 'http://www.site.com') ?>


Wordpress + Custom Scripts = Error 404

Wordpress is the most popular CMS in the world. Many sites are powered by Wordpress, plugins almost for every need are available. But...

If you decide to add some custom web scripts or other CMS to the domain where Wordpress is already installed, you'll get a problem with Error Handling. Wordpress shows Error 404 (File not found) for any URL that is not a part of Wordpress system!

Moreover, Wordpress changes standard error pages to its own ones. So if an error occurs outside Wordpress environment, the error message appears in Wordpress style anyway!

This can be fixed using .htaccess settings. At first you should exclude work folders form RewriteMode redirections. Add the following line into .htaccess file in the root of your site:

RewriteEngine On
RewriteBase /wordpress/
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_URI} !^/(folder1|folder2)/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /wordpress /index.php [L]

Then you should disable custom error page, at least in folders of your scripts. Add the following line to .htaccess files in your script folders. You can add this line to the root file as well, but sometimes it doesn't work:

ErrorDocument 404 default

This is enough if Wordpress is installed into a folder. But if Wordpress is installed into the root of the site, the solution may not work depending on CMS version and installed theme. Most probably you will need to fix some files manually to disable 404 error handling. The core is located in class-wp.php file:

function handle_404() {
...
$wp_query->set_404();
status_header( 404 );
...
}

BTW, Wordpress in the root of the site is not a best practice...

Keyboard Leds 2.0

Keyboard LEDs version 2.0 has been released.

Program allows you to see the current state of keyboard locks (Caps, Num, Scroll). Information is shown in the system tray or on a floating window over your screen. Also there is an option to indicate the locks state changing with sound.

You can download and use Keyboard Leds program absolutely free!

Function IsValidEmail for Delphi

It's hard to believe, but there is no standard function in Delphi to verify the email address. Also there is no native RegExp support. So I have to create own routine for email verification. It is not fully RFC compatible (there is no support for user@[10.20.30.40] and John Dow <a@b.c>) but is good enough for 99% of end-user programs.

//------------------------------------------------------------------------------ // Verifies is the given string valid email address or not. Domain names without // dots (user@localhost) are acceptable if AllowRootDomain is True. function IsValidEmail(const Value: string; AllowRootDomain: Boolean = False): Boolean; //------------------------------------- function _Verify(const S: string): Boolean; var i: Integer; begin Result := False; for i := 1 to Length(S) do if not (S[i] in ['a'..'z' ,'A'..'Z', '0'..'9', '_', '-', '.']) then Exit; Result := True; end;{Internal _Verify} //------------------------------------- var i: Integer; User, Domain: string; begin Result:= False; // @ is must, but not first i := Pos('@', Value); if i < 2 then Exit; User := Copy(Value, 1, i - 1); if User = '' then Exit; Domain := Copy(Value, i + 1, MaxInt); if Domain = '' then Exit; if not AllowRootDomain then begin // Dot is must, but not first i := Pos('.', Domain); if i < 2 then Exit; end; // Dot should not be first and the last if (Domain[1] = '.') or (Domain[Length(Domain)] = '.') then Exit; // Verify each char of User and Domain Result:= _Verify(User) and _Verify(Domain); end;

Click on code, press Ctrl+A to select all, Ctrl+C to copy the text.

P.S. Does anybody use Delphi in 2011? :)

Keyboard Leds 1.5

Keyboard LEDs version 1.5 has been released.

Program allows you to see the current state of keyboard locks (Caps, Num, Scroll). Information is shown in the system tray or on a floating window over your screen. Also there is an option to indicate the locks state changing with sound.

You can download and use Keyboard LEDs program absolutely free!

List of USA and Canada States

Same to the countries list I'm publishing the list of USA and Canadian states:

Alabama Alaska Alberta Arizona Arkansas British Columbia California Colorado Connecticut Delaware District of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Manitoba Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Brunswick New Hampshire New Jersey New Mexico New York Newfoundland and Labrador North Carolina North Dakota Northwest Territories Nova Scotia Nunavut Ohio Oklahoma Ontario Oregon Pennsylvania Prince Edward Island Quebec Rhode Island Saskatchewan South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming Yukon Territory

Hope this helps somebody :)

Hint: Click on list, press Ctrl+A to select all, Ctrl+C to copy the list.

Country List

Every time I create the user panel in some program or website I'm searching for a list of countries for dropdown (combo box) options control. So I decide to palace such list in a public place:

AFGHANISTAN ALBANIA ALGERIA ANDORRA ANGOLA ANTARCTICA ANTIGUA AND BARBUDA ARGENTINA ARMENIA ARUBA AUSTRALIA AUSTRIA AZERBAIJAN BAHAMAS BAHRAIN BANGLADESH BARBADOS BELARUS BELGIUM BELIZE BENIN BERMUDA BHUTAN BOLIVIA BOSNIA AND HERZEGOVINA BOTSWANA BRAZIL BRITISH INDIAN OCEAN TERRITORY BRUNEI DARUSSALAM BULGARIA BURKINA FASO BURUNDI CAMBODIA CAMEROON CANADA CAPE VERDE CENTRAL AFRICAN REPUBLIC CHAD CHILE CHINA COLOMBIA COMOROS CONGO CONGO, DEMOCRATIC REPUBLIC OF THE COSTA RICA COTE D'IVOIRE CROATIA CUBA CYPRUS CZECH REPUBLIC DENMARK DJIBOUTI DOMINICA DOMINICAN REPUBLIC ECUADOR EGYPT EL SALVADOR EQUATORIAL GUINEA ERITREA ESTONIA ETHIOPIA FAROE ISLANDS FIJI FINLAND FRANCE FRENCH GUIANA FRENCH SOUTHERN TERRITORIES GABON GAMBIA GEORGIA GERMANY GHANA GREECE GRENADA GUADELOUPE GUATEMALA GUINEA GUINEA-BISSAU GUYANA HAITI HONDURAS HUNGARY ICELAND INDIA INDONESIA IRAN, ISLAMIC REPUBLIC OF IRAQ IRELAND ISRAEL ITALY JAMAICA JAPAN JERSEY JORDAN KAZAKHSTAN KENYA KIRIBATI KOREA, DEMOCRATIC PEOPLE'S REPUBLIC OF KOREA, REPUBLIC OF KUWAIT KYRGYZSTAN LAO PEOPLE'S DEMOCRATIC REPUBLIC LATVIA LEBANON LESOTHO LIBERIA LIBYAN ARAB JAMAHIRIYA LIECHTENSTEIN LITHUANIA LUXEMBOURG MACAU MACEDONIA, THE FORMER YUGOSLAV REPUBLIC OF MADAGASCAR MALAWI MALAYSIA MALDIVES MALI MARTINIQUE MAURITANIA MAURITIUS MEXICO MICRONESIA, FEDERATED STATES OF MOLDOVA MONACO MONGOLIA MONTENEGRO MONTSERRAT MOROCCO MOZAMBIQUE MYANMAR NAMIBIA NEPAL NETHERLANDS NEW ZEALAND NICARAGUA NIGER NIGERIA NORWAY OMAN PAKISTAN PALAU PALESTINIAN TERRITORY PANAMA PAPUA NEW GUINEA PARAGUAY PERU PHILIPPINES POLAND PORTUGAL QATAR REUNION ROMANIA RUSSIAN FEDERATION RWANDA SAINT HELENA SAINT KITTS AND NEVIS SAINT LUCIA SAINT VINCENT AND THE GRENADINES SAN MARINO SAO TOME AND PRINCIPE SAUDI ARABIA SENEGAL SERBIA SEYCHELLES SIERRA LEONE SLOVAKIA SLOVENIA SOLOMON ISLANDS SOMALIA SOUTH AFRICA SPAIN SRI LANKA SUDAN SURINAME SWAZILAND SWEDEN SWITZERLAND SYRIAN ARAB REPUBLIC TAIWAN, PROVINCE OF CHINA TAJIKISTAN TANZANIA, UNITED REPUBLIC OF THAILAND TIMOR-LESTE (EAST TIMOR) TOGO TRINIDAD AND TOBAGO TUNISIA TURKEY TURKMENISTAN UGANDA UKRAINE UNITED ARAB EMIRATES UNITED KINGDOM UNITED STATES URUGUAY UZBEKISTAN VANUATU VENEZUELA VIETNAM WESTERN SAHARA YEMEN ZAMBIA ZIMBABWE

This is ISO 3166 Country Name list. Maybe other people will be happy to use this list in own projects :)

Hint: Click on list, press Ctrl+A to select all, Ctrl+C to copy the list.

Keyboard Leds 1.3

Keyboard LEDs version 1.3 has been released.

Program allows you to see the current state of keyboard locks (Caps, Num, Scroll). Information is shown in the system tray or on a floating window over your screen. Also there is an option to indicate the locks state changing with sound.



You can download and use Keyboard LEDs program absolutely free!




Software works on Windows, there is no MacOS edition. Yet :)

My CV

I've updated my Resume (Curriculum Vitae). I don't know what to do with this "paper", so just put it in a public place: KARPOLAN's CV.

Software to monitor internet usage

What is the best software to monitor internet usage?

I know WorkTime by NesterSoft but I'm not sure that is the easiest one.

Any other suggestions?