They want to understand about basic rules and api about wordpress theme development. Here we collected some best of urls which has best practices and guidelines about wordpress theme development.

List of free wordpress theme frameworks for wordpress theme developer

How to create wordpress theme

How To Create WordPress Themes From Scratch Part 1

How to Create a WordPress Theme from Scratch

Theme Development

Template Tags for wordpress

Blog design and development

Designing a WordPress Theme From Scratch

Future of PSD to WordPress Conversion

All time Best WordPress Ebooks

General Guidelines when you are developing the new Theme

How to create simple wordpress theme

Basic CSS rules for development of WordPress themes

I liked one picture which about wordpress theme development. This picture is by Yoast blogger.

Best of Resources for wordpress theme-development

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First you need to add the following code in your wp-config.php file.

define('FTP_USER', 'username');
define('FTP_PASS', 'mypassword');
define('FTP_HOST', '192.168.2.132');
define('FTP_SSL', false);

But this is old idea. If you dont want to add the ftp access in wp-config.php file then Just add the following line wp-config.php file.

define('FS_METHOD', 'direct');

Note: You need to give 755 permission to wp-content folder. Create the upgrade folder in wp-content folder.

If still you are facing issue then give 777 permission to all wp-content folder.

For permission use following command

cd your_wordpress_directory
sudo chown -R www-data wp-content
sudo chmod -R 755 wp-content

More information:

WordPress will try to write a temporary file to your /wp-content directory. If this succeeds, it compares the ownership of the file with it’s own uid, and if there is a match it will allow you to use the ‘direct’ method of installing plugins, themes, or updates.

Now, if for some reason you do not want to rely on the automatic check for which filesystem method to use, you can define a constant, 'FS_METHOD' in your wp-config.php file that is either 'direct' 'ssh', 'ftpext' or 'ftpsockets' and it will use method. Keep in mind that if you set this to ‘direct’ but your web user (the username under which your webs server runs) does not have proper write permissions, you will receive an error.

install and update the wordpress plugins without providing ftp access

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I added the google button code to digcms.com site.

You just need to add the following code to site.

<!-- Place this tag where you want the +1 button to render -->
<g:plusone size="tall"></g:plusone>

<!-- Place this render call where appropriate -->
<script type="text/javascript">
 (function() {
 var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
 po.src = 'https://apis.google.com/js/plusone.js';
 var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
 })();
</script>

For getting the different style of google plus button you can go to following site.

http://www.google.com/webmasters/+1/button/

how to add the google plus button code for wordpress without plugin

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What is RSS?

The easiest way to receive latest posts from your favorite blogs is to subscribe to RSS using feed readers such as Google Reader, Bloglines, NetVibes.
RSS (means Really Simple Syndication) retrieves the latest content from the sites you are interested and pulls them into your feed reader where you can read them all in one location rather than visiting each site separately.

What is FeedBurner?

Most blogs have RSS feed which is detected automatically by commonly used feed readers when the blog URL is added to the reader.

Setting Up Your Feedburner Feed

1.  Go to Feedburner and sign in to Feedburner with your Google Account (create a Google Account first if you don’t have one!).

However, if you want to make it more obvious and easier for readers to subscribe using RSS, or want to know exactly how many people subscribe to your blog then the best option is to add a Feedburner RSS feed and email subscription to your blog.

After creating feedburner account go to

1.  Click on the Publicize Tab > Email Subscription in your Feedburner account and click on Activate.

2.   Copy the HTML code.

After this go to wordpress admin panel and go to widget section and choose text widget.

Add a text widget to the desired sidebar by dragging it from the Available Widgets into the Sidebar area on the right.

The widget will automatically open — just add the HTML code for Feedburner email subscription, click Save and then Close.

This widget will look as follows:

If you like this article then please subscribe my blog.

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add_action( 'init', 'wpapi_date_picker' );
function wpapi_date_picker() {
    wp_enqueue_script( 'jquery' );
    wp_enqueue_script( 'jquery-ui-core' );
    wp_enqueue_script( 'jquery-datepicker', 'http://jquery-ui.googlecode.com/svn/trunk/ui/jquery.ui.datepicker.js', array('jquery', 'jquery-ui-core' ) );
}

add_action( 'wp_footer', 'wpapi_print_scripts');
function wpapi_print_scripts() {
    ?>
<script type="text/javascript">
    jQuery(document).ready(function() {
        jQuery('#datepicker').datepicker();
    })
</script>
    <?php
}

For showing the datepicker control in theme or plugin use following code.

<script type="text/javascript">
jQuery(document).ready(function() {
    jQuery('#datepicker').datepicker({
        dateFormat : 'yy-mm-dd'
    });
});
</script>

How to implement the Jquery UI datepicker in wordpress

If you have any issue for adding the datepicker control then please add comment or email me.

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// Register your javascript for properties
function admin_your_javascript(){
    global $post;
    if($post->post_type == 'post-type' && is_admin()) {
        wp_enqueue_script('YOUR-JS', WP_CONTENT_URL . '/themes/YOUR-THEME/js/YOUR-JS.js');

    }
}
add_action('admin_print_scripts', 'admin_your_javascript');

// Register your styles for properties
function admin_your_styles(){
    global $post;
    if($post->post_type == 'post-type' && is_admin()) {
        wp_enqueue_style('YOUR-CSS', WP_CONTENT_URL . '/themes/YOUR-THEME/css/YOUR-CSS.css');
    }
}
add_action('admin_print_styles', 'admin_your_styles');

You just need to replace Your theme name and javascript and css file name.

add javascript and css files into wordpress theme

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This following code you need to add in functions.php file.

function my_add_frontend_scripts() {
    if( ! is_admin() ) {
        wp_enqueue_script('jquery');
        wp_enqueue_script('jquery-ui-core');
    }
}
add_action('init', 'my_add_frontend_scripts');

Then you are able to see the jquery-ui in your wordpress theme.

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Parameters

$to
    (string or array) (required) The intended recipient(s). Multiple recipients may be specified using an array or a comma-separated string.

$subject
    (string) (required) The subject of the message.

$message
    (string) (required) Message content.

$headers
    (string or array) (optional) Mail headers to send with the message. (advanced)

$attachments
    (string or array) (optional) Files to attach: a single filename, an array of filenames, or a newline-delimited string list of multiple filenames. (advanced)

Simple example:

<?php
   $attachments = array(WP_CONTENT_DIR . '/uploads/file_to_attach.zip');
   $headers = 'From: My Name <myname@mydomain.com>' . "\r\n";
   wp_mail('test@test.com', 'subject', 'message', $headers, $attachments);
?>

Send email through wp_mail in html format with wordpress

We can use this code for contact form or in functions.php file

For html format email from wordpress. we just need to add following line in functions.php file.

add_filter('wp_mail_content_type',create_function('', 'return "text/html";'));

Sending HTML email has risks. It could be caught in spam filters. The client may not support HTML formatting (although that’s rare). The client may disable email HTML from using javascript, CSS or grabbing remote assets like images.

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How to start?
First you need to disable the wordpress theme. using following code.

open your header.php file from your wordpress theme and put following code in that file.

<?php
/* Short and sweet */
define('WP_USE_THEMES', false);
require('./wp-blog-header.php');
?>

Create any php file and put following code in that file.

<?php
require('/the/path/to/your/wp-blog-header.php');
?>

In the event you want to show ten posts sorted alphabetically in ascending order on your web page, you could do the following to grab the posted date, title and excerpt:

<?php
require('/the/path/to/your/wp-blog-header.php');
?>

<?php
$posts = get_posts('numberposts=10&order=ASC&orderby=post_title');
foreach ($posts as $post) : start_wp(); ?>
<?php the_date(); echo "<br />"; ?>
<?php the_title(); ?>
<?php the_excerpt(); ?>
<?php
endforeach;
?>

how to integrate the wordpress with php or html

For more information you can write to me.

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max_execution_time = 300     ; Maximum execution time of each script, in seconds
max_input_time = 300    ; Maximum amount of time each script may spend parsing request data
memory_limit = 128M      ; Maximum amount of memory a script may consume (16MB)

I know on 2.5.1 i needed to increase the memdory, but i don't know how in 2.6. in the wp-config.php there no define to increase memory.

If you are using old wordpress version less then wordpress 2.6 version or you are using the wordpress MU then use following code.

open your wp-settings.php file from root folder and change following line

if ( !defined('WP_MEMORY_LIMIT') )
        define('WP_MEMORY_LIMIT', '32M');

to

if ( !defined('WP_MEMORY_LIMIT') )
        define('WP_MEMORY_LIMIT', '128M');

If you are using the newer wordpress version greater then 2.7 then use following method.
Following URL is also helpful
http://codex.wordpress.org/Editing_wp-config.php#Increasing_memory_allocated_to_PHP

Edit wp-config.php and enter the following line
define('WP_MEMORY_LIMIT', '64M');

If you are using the shared hosting then use following method.

1. Create a file called php.ini in the root of your site (if you are using a hosted addon domain, this must be in the subdirectory of that site)
2. In php.ini, enter a line that says
memory_limit = 64MB
3. In your site's .htaccess (being a WordPress blog, I'm assuming there is one), enter the following line
SetEnv PHPRC /<unix path to the directory where php.ini is>/
(keep the slashes)
4. Edit wp-config.php and enter the following line
define('WP_MEMORY_LIMIT', '64M');
5. Upload the new files to the server

Oh, and don't tell your hosting provider you've done this...

This will solve your issue.

Solved for WordPress old and new versions - PHP Fatal error: Allowed memory size of 33554432 bytes exhausted

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