sharing some useful programming tips with other developers.
This is how you add a calendar / date picker to Joomla form.
add the following code to your
xx.html.php class
$document = &JFactory::getDocument();
$document->addScript("includes/js/joomla.javascript.js");
JHTML::_('behavior.calendar');
If you are in a position to have a better view of 2 dimensional array then try this
$fruits["apple"] = array("Canada","US","Extra");
echo "";";
print_r($fruits);
echo "
If you are trying to redirect a dynamic URL follow the steps to do it.
RewriteCond %{QUERY_STRING} ^product_id=(.*)$
RewriteRule ^product_view\.php$ /products/%1? [R=301,L]
The above statements would do the following,
http://www.example.com/product_view.php?product_id=4
redirected to
http://www.example.com/products/4
Hope it helps someone.
cheers.
If you are trying to select records whose ids are not present in the other table,
eg: articles table has article_id, categorized table has article_id and cat_id.
If you are trying to select the article that is not categorized yet
SELECT * FROM articles WHERE article_id NOT IN ( SELECT article_id FROM categorized );
If you are trying to filter out duplicate records from your table.
SELECT DISTINCT column_name,id FROM table_name
GROUP BY coulumn_name
HAVING COUNT(column_name) > 1
This is for MySQL I have no idea about other DBs
$query = mysql_query("SELECT count(*) FROM accounts");
$ctr = mysql_result($query,0,0);
If you happened to see ^M at end of every line of your code, it's a real pain. You can remove the character from the file somehow.
from your command line (Linux)
1) sed -e 's/^M//g' index.php > ind.php
[ ctrl v + ctrl M would give your ^M char on command line ]
2) mv ind.php index.php
Now, your index file is free of ^M characters. Enjoy coding.
If you'd like to change user registration page of Joomla, follow the following steps to accomplish it.
1) Change in template file (under components/user/)
2) modify /libraries/joomla/user/user.php
3) modify /libraries/joomla/database/table/user.php
and also modify users table of joomla using any db admin scripts eg:phpMyadmin
Modify those files as per your request, you will see a modified user registration page of Joomla.
If you are looking forward to enable Javascript in different browsers, just check whether it's disabled first by visiting the site.
www.isjavascriptenabled.com
That would tell you whether it's enabled or disabled
How to enable the Javascript now?
Go to the site get info as per your browser.
www.tranexp.com/win/JavaScript-enabling.htm
if you are trying to redirect any subdomain request to the root, try the following method. The URL will not change in the address bar.
RewriteCond %{HTTP_HOST} ^business\.rootdomain\.com
RewriteCond %{REQUEST_URI} !^/business/
RewriteRule (.*) http://www.rootdomain.com/business/$1 [P]
if you get any internal error, add proxy & proxy http modules to Apache.
restart the web server,it should work now.
If you are looking forward to install SSH2, follow the link to do so. It works and save you a lots time.
http://cubiclegeneration.com/web-servers/installing-secure-shell2-ssh2-php-extension
if you experience any issue at these lines
gunzip libssh2-0.18.tar.gz
tar -xvf libssh2-0.18.tar.gz
Just remove the .gz from the end, would work.
Done.
On your developer box: You enabled SEF in Joomla by doing the following way:
1.rename htaccess.txt to .htaccess
2.Global Configuration -> SEO Settings (set yes to everything) and save it
Refresh your Joomla site
click on your site links - if the short url is working then everything is cool if NOT
open up your Apache config file and
add the following lines to your virtual host setup
AllowOverride all
If you having trouble with your flash player in CentOS 5 ( 64 bits) then follow the link to make it work. I googled for help and found out this after a long time. It's good.
http://www.yqed.com/install-flash-player-10-centos-64-bits/
Enjoy your flash player.
Always pay attention to these functions.
$a = 0;
// isset() - treats $a as not empty
if(isset($a))
echo "a has ".$a;
// empty() - treats $a as empty
If you'd like to get the entire content of a file into a string then follow the way
// have your filename with path
$file_name = "yourfilename.ext";
$content_string = file_get_contents($file_name);
echo $content_string; // will display the content
echo strlen($content_string);
// have your filename with path
$file_name = "yourfilename.ext";
$content = file($filename);
foreach($content as $content_row)
echo $content_row;
// checks postal code format L4X-1S9
$regex = '/[a-z][0-9][a-z][- ]?[0-9][a-z][0-9]$/i';
if( preg_match($regex, $zip) )
echo "Valid postal code";
// checks for 5 digit or 9 digit zip code or 12345-6789
// or 123456789
$regex = '/(^\d{5}$)|(^\d{5}-\d{4}$)|(^\d{9}$)/'
if( preg_match($regex, $zip) )
echo "Valid Zip code";
PHP array:
$fruits = array("Apple","Mango","Banana");
echo 'var fruits = new Array("',join($fruits,'","'),'");';
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