It’s not well documented, but according to the codex, you can pass a ‘post_type’ variable in the get_comments function.

<?php
 $comments = get_comments('number=10&status=approve&post_type=YOUR_POST_TYPE');
foreach($comments as $comment) :

// comment loop code will go here

endforeach;
?>

Note: This code only useful after wordpress 3.1 version.

Show the comments from custom post type in wordpress

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Change uploaded image name to post slug during upload using variables

In other words, if you are uploading/attaching images to the post whose page slug is “test-page-slug”, i’d like for the images to be renamed on the fly to test-page-slug-[C].[original_extension] — test-page-slug-1.jpg, test-page-slug-2.jpg etc (no matter what the original filenames were).

This is very easy. You just need to use following hook in functions.php file.

function wp_modify_uploaded_file_names($image_name) {

    // Get the parent post ID, if there is one
    if( isset($_GET['post_id']) ) {
        $post_id = $_GET['post_id'];
    } elseif( isset($_POST['post_id']) ) {
        $post_id = $_POST['post_id'];
    }

    // Only do this if we got the post ID--otherwise they're probably in
    //  the media section rather than uploading an image from a post.
    if(is_numeric($post_id)) {

        // Get the post slug
        $post_obj = get_post($post_id);
        $post_slug = $post_obj->post_name;

        // If we found a slug
        if($post_slug) {

            $random_number = rand(10000,99999);
            $image_name['name'] = $post_slug . '-' . $random_number . '.jpg';

        }

    }

    return $image_name;

}
add_filter('wp_handle_upload_prefilter', 'wp_modify_uploaded_file_names', 1, 1);

This is very easy.
if you have pretty permalinks enabled, so I’ve added a check to make sure there is a slug before renaming the file. You’ll also want to consider checking the file type, which I haven’t done here–I’ve just assumed it’s a jpg.

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• change wordpress image name
• wordpress media-upload options page no post_id

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Solved: qTranslate slug with Widget not working with pages

The problem was exactly at the function qTranslateSlug_filter_request inside de file qtranslate-slug-with-widget.php, which is the only one of the plugin, so it’s easy to find.
We must take a look at this part of the code:

if (isset($q['name'])) {
    $type = QTS_POST;
    $slug = $q['name'];
    $param = 'p';
    $get_link = 'get_permalink';
    unset($new_q['name']);
} else if (isset($q['pagename'])) {
    //$type = QTS_PAGE;
    //$slug = $q['pagename'];
    //$param = 'page_id';
    $id = qTranslateSlug_get_page_by_path($q['pagename'], $lang);
    if ($id) {
        unset($new_q['pagename']);
        $q = $new_q;
        $q['page_id'] = $id;
        $get_link = 'get_page_link';
    }
} else if (isset($q['category_name'])) {
    $type = QTS_CAT;
    $slug = $q['category_name'];
    $param = 'cat';
    $get_link = 'get_category_link';
    unset($new_q['category_name']);
} else if (isset($q['tag'])) {
    $type = QTS_TAG;
    $slug = $q['tag'];
    $param = 'tag_id';
    $get_link = 'get_tag_link';
    unset($new_q['tag']);
}

That we hace to replace with the following:

if (isset($q['name'])) {
        $id = qTranslateSlug_get_page_by_path($q['name'], $lang);
        if ($id) {
            unset($new_q['name']);
            $q = $new_q;
            $q['page_id'] = $id;
            $get_link = 'get_page_link';
        } else {
            $type = QTS_POST;
            $slug = $q['name'];
            $param = 'p';
            $get_link = 'get_permalink';
            unset($new_q['name']);
        }
    } else if (isset($q['pagename'])) {
        $id = qTranslateSlug_get_page_by_path($q['pagename'], $lang);
        if ($id) {
            unset($new_q['pagename']);
            $q = $new_q;
            $q['page_id'] = $id;
            $get_link = 'get_page_link';
        }
    } else if (isset($q['category_name'])) {
        $type = QTS_CAT;
        $slug = $q['category_name'];
        $param = 'cat';
        $get_link = 'get_category_link';
        unset($new_q['category_name']);
    } else if (isset($q['tag'])) {
        $type = QTS_TAG;
        $slug = $q['tag'];
        $param = 'tag_id';
        $get_link = 'get_tag_link';
        unset($new_q['tag']);
    } else {
        $path = trim(preg_replace('/\?(.*)/', '', $_SERVER['REQUEST_URI']), '/');
        $id = qTranslateSlug_get_page_by_path($path, $lang);
        if ($id) {
            if (isset ($q['attachment'])) {
                unset($q['attachment']);
                unset($new_q['attachment']);
            }
            $q = $new_q;
            $q['page_id'] = $id;
            $get_link = 'get_page_link';
        }
    }

With the last wordpress versions, mine is 3.3.1, has changed the way of passing the query to the request filter, changing the array slug position from ‘pagename’ to ‘name’, then the plugin didn’t have a way to find any page, since it expected to find in the array the position ‘pagename’, nonexistent for the current case.
Ref is taken from – http://en.codatavern.com/qtranslate-slug-with-widget-wordpress-plugin-fix/

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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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you can use the following code in funcations.php file.

// === CUSTOM POST TYPES === //
function create_my_post_types() {
	register_post_type( 'Services',
		array(
			'labels' => array(
				'name' => __( 'Services' ),
				'singular_name' => __( 'Services' ),
				'add_new_item' => 'Add New Services',
				'edit_item' => 'Edit Services',
				'new_item' => 'New Services',
				'search_items' => 'Search Services',
				'not_found' => 'No Services found',
				'not_found_in_trash' => 'No Services found in trash',
			),
			'_builtin' => false,
			'public' => true,
			'hierarchical' => false,
			'taxonomies' => array( 'website_type', 'service'),
			'supports' => array(
				'title',
				'editor',
				'excerpt',
                                'thumbnail'
			),
			'rewrite' => array( 'slug' => 'services', 'with_front' => false ),

		)
	);
}
add_action( 'init', 'create_my_post_types' );

// === CUSTOM TAXONOMIES === //
function my_custom_taxonomies() {
	register_taxonomy(
		'website_type',		// internal name = machine-readable taxonomy name
		'Services',		// object type = post, page, link, or custom post-type
		array(
			'hierarchical' => true,
			'label' => 'Website Types',	// the human-readable taxonomy name
			'query_var' => true,	// enable taxonomy-specific querying
			'rewrite' => array( 'slug' => 'website_type' ),	// pretty permalinks for your taxonomy?
		)
	);
	register_taxonomy(
		'service',
		'post',
		array(
			'hierarchical' => false,
			'label' => 'Service',
			'query_var' => true,
			'rewrite' => array( 'slug' => 'service' ),
		)
	);

}
add_action('init', 'my_custom_taxonomies', 0);

Please consult with your developer.

How to add the custom post type with associated tags and category

……………………..

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You just need to open your functions.php file and put following function in that file.

</span>
<pre><pre>
add_filter('post_link', 'fitsmi_post_link');
function fitsmi_post_link($permalink) {
	global $post;
        $permalink = str_replace("wordpress/", "", $permalink);
        return $permalink;
	if (!isset($post))
		return $permalink;
	else
		return 'http://hack.by.wordpressapi/';
}

change permalinks as per your choice in wordpress using post_link filter

With following function you need to be very careful.

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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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I used the following code for first image removing.

/*
 * Removing the first image from post
 */
function remove_first_image ($content) {
 if (!is_page() && !is_feed() && !is_feed() && !is_home()) {
    if (preg_match("/<img[^>]+\>/i",$content)) {
		 $content = preg_replace("/<img[^>]+\>/i", "", $content, 1);
 	}
	return $content;
   }
}

But I faced the some issues with that code. When first image has caption then only image get removed and caption will remain there.

After that I used the following code for caption remove.

/*
 * Removing the first caption from post with image
 */
function remove_first_image_caption ($content) {
 if (!is_page() && !is_feed() && !is_feed() && !is_home()) {
 $content = preg_replace("(\)", "", $content, 1);
 } return $content;
}
add_filter('the_content', 'remove_first_image_caption');

But if first image has no caption and second image image has caption then both the images will be get removed from post.

After some struggle I written following code. Following is the solution:

Final Code.

/*
 * Removing the first image from post
 * functionality added to delete caption is present to first image.
 */
function remove_first_image ($content) {
 if (!is_page() && !is_feed() && !is_feed() && !is_home()) {
    if (preg_match("/<img[^>]+\>/i",$content)) {
    //find first image URL
     $first_img = '';
     $output = preg_match_all('/< *img[^>]*src *= *["\']?([^"\']*)/', $content, $matches);
     $first_img = $matches[1][0];

    //find first image caption inner text
     $output = preg_match_all("/caption=['"](.*)/", $content, $matches);

     //find first image present in first caption text or not
        $pos = strpos($matches[0][0], $first_img);

    // if image URL found in caption array then delete the caption and image
        if ($pos !== false) {
           $content = preg_replace("(\)", "", $content, 1);
        } else {
           $content = preg_replace("/<img[^>]+\>/i", "", $content, 1);
        }
    }

 } return $content;
}
add_filter('the_content', 'remove_first_image');

solved: pagination for Custom post type not working

Some people asked me about pagination of custom post type. That is very easy.

For showing the custom post type we always use the query_post method.

Just use the following code in your template or theme file.

<?php get_header(); ?>

            <?php  query_posts( 'post_type=custom-post-type&paged='.$paged );
                                    if (have_posts()) : while (have_posts()) : the_post(); ?>

loop here

              			<?php endwhile; ?>
				  <div id="nav-below" class="navigation">
					<div class="nav-previous"><?php next_posts_link( __( '<span class="meta-nav">&larr;</span> Older posts', 'twentyten' ) ); ?></div>
					<div class="nav-next"><?php previous_posts_link( __( 'Newer posts <span class="meta-nav">&rarr;</span>', 'twentyten' ) ); ?></div>
				  </div><!-- #nav-below -->
				  <?php endif; wp_reset_query(); ?>

<?php get_footer(); ?>

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$cat_id = get_cat_ID('private');
$args=array(
  'category__not_in' => $cat_id,
  'post_type' => 'post',
  'post_status' => 'publish',
  'posts_per_page' => 5
);

if(!is_user_logged_in()){
    $cat_id = get_cat_ID('private');
   $args=array(
  'category__not_in' => $cat_id,
  'post_type' => 'post',
  'post_status' => 'publish',
  'posts_per_page' => 5
);

} else {
    $cat_id = get_cat_ID('public');
$args=array(
  'category__not_in' => $cat_id,
  'post_type' => 'post',
  'post_status' => 'publish',
  'posts_per_page' => 5
);

}
// The Query
query_posts( $args );

// The Loop
while ( have_posts() ) : the_post();
	echo '<li>';
	the_title();
	echo '</li>';
endwhile;

// Reset Query
wp_reset_query();

How to show some posts to only registered users in wordpress

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