Eclipse – “Too many open files” Problem

If your OS is Linux and you are using Eclipse, you might possibly see the following error messages or similar on certain time. This may result by installing many plugin or other reasons.
This is because there are too many files opened and these are more files than the number of open files allowed . So Eclipse cannot open more files and displays the errors above.
Let’s see the number of open files.
$ lsof | wc -l


$ lsof | wc -l

In my case, it was 9028.

Now check the limitation of open files

Now check the limitation of open files
$ ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 31226
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 31226
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

To change it, open the file /etc/security/limits.conf and put a greater number than 1024 depending on the number of open files you checked with lsof | wc -l just before.
For example,
Open the file
$ gksudo gedit /etc/security/limits.conf
add these lines
*                soft    nofile          9216

*                hard    nofile          9216

Log out and in then check with ulimit. It should show like this.
For more detail view in below page,


Customize WordPress login logo without a plugin

Sometime wordpress developer need to change the wordpress logo in admin login screen while creating the site for the client. For that we can simply include the code below and deploy it without using any plugin. Simply copy and paste the code below in the function.php of your theme folder.

function my_custom_login_logo() {
    echo '<style type="text/css">
        h1 a { background-image:url('.get_bloginfo('template_directory').'/images/custom-login-logo.gif) !important; }

add_action('login_head', 'my_custom_login_logo');

The image that need to changed should be placed in the images folder of the theme.


Magento – Display Address Fields on Create an Account

By default Magento doesnt show the address fields within “Create an Account”. To make the sign up process more user friendly you can enable the address fields by adding the following:
Simple way to show that is to add the below code in customer.xml or in local.xml

        <reference name="customer_form_register">
            <action method="setShowAddressFields"><value>true</value></action>
Source : 

Customer cannot login to magento

Using the free theme sometime may result  of customer not logged in problem issue. To resolve this issue we need to put the for key field in the login form.
In app/design/frontend/default/…/template/persistent/customer/form/login.phtml , around line 41 should look like

 <form action="<?php echo $this->getPostActionUrl() ?>" method="post" id="login-form">
 <?php echo $this->getBlockHtml('formkey'); ?> 

If the code is not seen then add it then customer login works

Category Specific Single Post Templates

Sometimes we may required different category related single post template , i get the following things .
First put the code in function.php

// set up category specific single.php templates
add_filter('single_template', create_function('$t', 'foreach( (array) get_the_category() as $cat ) { if ( file_exists(TEMPLATEPATH . "/single-{$cat->slug}.php") ) return TEMPLATEPATH . "/single-{$cat->slug}.php"; } return $t;' ));

Then create file as single-categoryname.php. Now the custom template will load while loading the page related to the categoryname.

“Error 404 Not Found” in Magento Admin Login Page

I got “Error: 404 Not Found” when  transfered my magento installation from one local machine server to another. Now, I cannot login to admin panel and I got “Error: 404 Not Found”

The reason for this error is that store_id and website_id for admin should be set to 0 (zero). But, when you import database to new server, somehow these values are not set to 0.
Open PhpMyAdmin and run the following query in your database:-

UPDATE `core_store` SET store_id = 0 WHERE code='admin';
UPDATE `core_store_group` SET group_id = 0 WHERE name='Default';
UPDATE `core_website` SET website_id = 0 WHERE code='admin';
UPDATE `customer_group` SET customer_group_id = 0 WHERE customer_group_code='NOT LOGGED IN';
Source : 

Magento no input file specified error in Godaddy Hosting

A common error, which usually comes up if you’re hosted by GoDaddy, is the no input file specified error.
Try this first:
add this to your .htaccess file

RewriteEngine On
RewriteRule ^.+.php$ /bogusfile

Then try to reload your setup page.
If you do not have Magento setup in the root of your server, make sure to add the following to your .htaccess file.

RewriteBase /yourbasepath/

Once that is verified, there are a couple things you can do to fix this, but we’ll start with the one that usually works.
In your web root directory, there should be a file called php.ini. Rename this to php5.ini.
If there is no php5.ini file. Create the file and upload it to your root directory.
If that doesn’t work, add the following to the end of your newly renamed php5.ini file:

cgi.fix_pathinfo = 1

And if you’re still getting the error, add the following to the top of your .htaccess file:

Options -MultiViews

The first one usually does the trick. If you don’t see this file in there, then create a blank php5.ini file add add the line listed on the second suggestion.
If all of the above has not worked, KEEP your changes, wait exactly 24 hours. Go back to youraddress.tld/downloader and try again. You may just be cached and for some reason it takes a bit longer then I was used to. Keep your chin up!
If nothing above worked, call GoDaddy up and have them either rename this for you, or make sure you’re on PHP 5.

Source :

Magento change the currency selector dropdown to a flag list

To change the currency selector dropdown to a flag list, you can take following these steps:
1. Open file app/design/frontend/default/your_theme/template/directory/currency.phtml (or app/design/frontend/base/default/template/directory/currency.phtml)and change code from:

 <select name="currency" title="<?php echo $this->__('Select Your Currency') ?>" onchange="setLocation(this.value)">
        <?php foreach ($this->getCurrencies() as $_code => $_name): ?>
            <option value="<?php echo $this->getSwitchCurrencyUrl($_code) ?>"<?php if($_code==$this->getCurrentCurrencyCode()): ?> selected="selected"<?php endif; ?>>
                <?php echo $_name ?> - <?php echo $_code ?>
        <?php endforeach; ?>


        <?php foreach ($this->getCurrencies() as $_code => $_name): ?>
            <a href="<?php echo $this->getSwitchCurrencyUrl($_code) ?>" onclick="setLocation(this.value);">
                    <img src="your_flag" title="<?php echo $_name ?> - <?php echo $_code ?>"/>
        <?php endforeach; ?>

1. You need to prepare a flag list (images).
2. Upload flag list to root/media/flag directory
3. Rename flags to currency’s code (EX: US Dollar -> usd.jpg, Euro -> eur.jpg, Hong Kong Dollar -> hkd.jpg…)
4. In the template file: app/design/frontend/default/your_theme/template/directory/currency.phtml (or app/design/frontend/base/default/template/directory/currency.phtml), change code to:

        <?php foreach ($this->getCurrencies() as $_code => $_name): ?>
            <a href="<?php echo $this->getSwitchCurrencyUrl($_code) ?>" onclick="setLocation(this.value);">
                    <img src="<?php echo Mage::getBaseUrl('media').'flag/'.$_code.'.jpg'; ?>" title="<?php echo $_name ?> - <?php echo $_code ?>" alt="<?php echo $_name ?> - <?php echo $_code ?>" width="20" height="20" />
        <?php endforeach; ?>

Magento – Move Currency Switcher to the Header

If you would like to move the currency switcher from the left column to the header, you can use the following instructions to do so!
Open /app/design/frontend/default/default/layout/page.xml

<block type="page/html_header" name="header" as="header">

Change to:

<block type="page/html_header" name="header" as="header">
<block type="directory/currency" name="currency" template="directory/currency.phtml"/>

Open /app/design/frontend/default/default/template/page/html/header.phtml

<?php echo $this->getChildHtml('store_language') ?>


<?php echo $this->getChildHtml('currency') ?>

Save, Upload + Clear Cache
Make sure you have imported or manually entered your Currency Rates otherwise the switcher will not appear!
Its as simple as that!!