takien, not taken » PHP http://takien.com Webmaster's Information and Resource Wed, 28 Jul 2010 15:45:24 +0000 en hourly 1 http://wordpress.org/?v=3.0 WordPress Plugin WP Sub Posthttp://takien.com/550/wordpress-plugin-wp-sub-post.php http://takien.com/550/wordpress-plugin-wp-sub-post.php#comments Thu, 28 Jan 2010 14:08:08 +0000 takien http://takien.com/?p=550 WP Sub Post is a wordpress plugin that allow you to make your wordpress post has a parent or child post.

Notes:

  • Child post is a real post that has a parent.
  • Child post only displayed on it's parent post page or when parent page is displayed.
  • Child post can not be viewed individually.
  • Child post has all possibility like a normal post, such as attachment, custom fields etc.

Features:

  • Add/edit parent post directly from your post area.
  • No need to edit theme file.

Limitations:

  • No setting page
  • I don't know about it's compatibility.

Bugs:

  • Not compatible with my syntax highlight plugin :D

Screenshot

Plugin page:

WP sub post

New/Edit post page:

Wp sub post

View Single Post:

Wp sub post

RSS:

Wp sub post


Code:

Here is the code of this plugins...  Hahaha.. little bit messy

WP Sub Post

WP Sub Post

<?php</p>
/*
Plugin Name: WP Sub Post
Plugin URI: http://wordpress.org/#
Description: You can make a post is a child of another post.
Author: Takien
Version: 0.1 Alpha
Author URI: http://takien.com
*/

////////////////////////////

class Walker_PostDropdown extends Walker {

    var $tree_type = 'post';

    var $db_fields = array ('parent' => 'post_parent', 'id' => 'ID');

    function start_el(&$output, $page, $depth, $args) {
        $pad = str_repeat(' ', $depth * 3);

        $output .= "\tID\"";
        if ( $page->ID == $args['selected'] )
            $output .= ' selected="selected"';
        $output .= '>';
        $title = esc_html($page->post_title);
        $output .= "$pad$title";
        $output .= "\n";
    }
}
/////////////
function &wp_get_posts($args = '') {
    global $wpdb;

    $defaults = array(
        'child_of' => 0, 'sort_order' => 'ASC',
        'sort_column' => 'post_title', 'hierarchical' => 1,
        'exclude' => '', 'include' => '',
        'meta_key' => '', 'meta_value' => '',
        'authors' => '', 'parent' => -1, 'exclude_tree' => '',
        'number' => '', 'offset' => 0
    );

    $r = wp_parse_args( $args, $defaults );
    extract( $r, EXTR_SKIP );
    $number = (int) $number;
    $offset = (int) $offset;

    $cache = array();
    $key = md5( serialize( compact(array_keys($defaults)) ) );
    if ( $cache = wp_cache_get( 'wp_get_posts', 'posts' ) ) {
        if ( is_array($cache) && isset( $cache[ $key ] ) ) {
            $pages = apply_filters('wp_get_posts', $cache[ $key ], $r );
            return $pages;
        }
    }

    if ( !is_array($cache) )
        $cache = array();

    $inclusions = '';
    if ( !empty($include) ) {
        $child_of = 0; //ignore child_of, parent, exclude, meta_key, and meta_value params if using include
        $parent = -1;
        $exclude = '';
        $meta_key = '';
        $meta_value = '';
        $hierarchical = false;
        $incpages = preg_split('/[\s,]+/',$include);
        if ( count($incpages) ) {
            foreach ( $incpages as $incpage ) {
                if (empty($inclusions))
                    $inclusions = $wpdb->prepare(' AND ( ID = %d ', $incpage);
                else
                    $inclusions .= $wpdb->prepare(' OR ID = %d ', $incpage);
            }
        }
    }
    if (!empty($inclusions))
        $inclusions .= ')';

    $exclusions = '';
    if ( !empty($exclude) ) {
        $expages = preg_split('/[\s,]+/',$exclude);
        if ( count($expages) ) {
            foreach ( $expages as $expage ) {
                if (empty($exclusions))
                    $exclusions = $wpdb->prepare(' AND ( ID <> %d ', $expage);
                else
                    $exclusions .= $wpdb->prepare(' AND ID <> %d ', $expage);
            }
        }
    }
    if (!empty($exclusions))
        $exclusions .= ')';

    $author_query = '';
    if (!empty($authors)) {
        $post_authors = preg_split('/[\s,]+/',$authors);

        if ( count($post_authors) ) {
            foreach ( $post_authors as $post_author ) {
                //Do we have an author id or an author login?
                if ( 0 == intval($post_author) ) {
                    $post_author = get_userdatabylogin($post_author);
                    if ( empty($post_author) )
                        continue;
                    if ( empty($post_author->ID) )
                        continue;
                    $post_author = $post_author->ID;
                }

                if ( '' == $author_query )
                    $author_query = $wpdb->prepare(' post_author = %d ', $post_author);
                else
                    $author_query .= $wpdb->prepare(' OR post_author = %d ', $post_author);
            }
            if ( '' != $author_query )
                $author_query = " AND ($author_query)";
        }
    }

    $join = '';
    $where = "$exclusions $inclusions ";
    if ( ! empty( $meta_key ) || ! empty( $meta_value ) ) {
        $join = " LEFT JOIN $wpdb->postmeta ON ( $wpdb->posts.ID = $wpdb->postmeta.post_id )";

        // meta_key and meta_value might be slashed
        $meta_key = stripslashes($meta_key);
        $meta_value = stripslashes($meta_value);
        if ( ! empty( $meta_key ) )
            $where .= $wpdb->prepare(" AND $wpdb->postmeta.meta_key = %s", $meta_key);
        if ( ! empty( $meta_value ) )
            $where .= $wpdb->prepare(" AND $wpdb->postmeta.meta_value = %s", $meta_value);

    }

    if ( $parent >= 0 )
        $where .= $wpdb->prepare(' AND post_parent = %d ', $parent);

    $query = "SELECT * FROM $wpdb->posts $join WHERE (post_type = 'post' AND post_status = 'publish') $where ";
    $query .= $author_query;
    $query .= " ORDER BY " . $sort_column . " " . $sort_order ;

    if ( !empty($number) )
        $query .= ' LIMIT ' . $offset . ',' . $number;

    $pages = $wpdb->get_results($query);

    if ( empty($pages) ) {
        $pages = apply_filters('wp_get_posts', array(), $r);
        return $pages;
    }

    // Sanitize before caching so it'll only get done once
    $num_pages = count($pages);
    for ($i = 0; $i < $num_pages; $i++) {
        $pages[$i] = sanitize_post($pages[$i], 'raw');
    }

    // Update cache.
    update_page_cache($pages);

    if ( $child_of || $hierarchical )
        $pages = & get_page_children($child_of, $pages);

    if ( !empty($exclude_tree) ) {
        $exclude = (int) $exclude_tree;
        $children = get_page_children($exclude, $pages);
        $excludes = array();
        foreach ( $children as $child )
            $excludes[] = $child->ID;
        $excludes[] = $exclude;
        $num_pages = count($pages);
        for ( $i = 0; $i < $num_pages; $i++ ) {
            if ( in_array($pages[$i]->ID, $excludes) )
                unset($pages[$i]);
        }
    }

    $cache[ $key ] = $pages;
    wp_cache_set( 'wp_get_posts', $cache, 'posts' );

    $pages = apply_filters('wp_get_posts', $pages, $r);

    return $pages;
}
//////////////

function walk_post_dropdown_tree() {
    $args = func_get_args();
    if ( empty($args[2]['walker']) ) // the user's options are the third parameter
        $walker = new Walker_PostDropdown;
    else
        $walker = $args[2]['walker'];

    return call_user_func_array(array(&$walker, 'walk'), $args);
}

function wp_dropdown_posts($args = '') {
    $defaults = array(
        'depth' => 0, 'child_of' => 0,
        'selected' => 0, 'echo' => 1,
        'name' => 'page_id', 'show_option_none' => '', 'show_option_no_change' => '',
        'option_none_value' => ''
    );

    $r = wp_parse_args( $args, $defaults );
    extract( $r, EXTR_SKIP );

    $pages = wp_get_posts($r);
    $output = '';
    $name = esc_attr($name);

    if ( ! empty($pages) ) {
        $output = "
<select id=""$name\"" name="\"$name\"">
<option value="\"-1\"">$show_option_no_change</option>
<option value="\""">$show_option_none</option>

\n";
    }

    $output = apply_filters('wp_dropdown_pages', $output);

    if ( $echo )
        echo $output;

    return $output;
}
/////////////////////////////

/* Use the admin_menu action to define the custom boxes */
add_action('admin_menu', 'myplugin_add_custom_box');

/* Use the save_post action to do something with the data entered */
add_action('save_post', 'myplugin_save_postdata');

/* Adds a custom section to the "advanced" Post and Page edit screens */
function myplugin_add_custom_box() {

  if( function_exists( 'add_meta_box' )) {
    add_meta_box( 'myplugin_sectionid', __( 'WP Sub Posts', 'myplugin_textdomain' ), 'myplugin_inner_custom_box', 'post', 'side','high' );
    //add_meta_box( $id,                  $title,                                      $callback,                  $page, $context, $priority );
    add_meta_box( 'myplugin_sectionid', __( 'WP Sub Posts', 'myplugin_textdomain' ), 'myplugin_inner_custom_box', 'page', 'advanced' );
   } else {
    add_action('dbx_post_advanced', 'myplugin_old_custom_box' );
    add_action('dbx_page_advanced', 'myplugin_old_custom_box' );
  }
}

function myplugin_inner_custom_box() {
echo '
<style type="text/css">
select#parent_id, select#parent_id option {
    width:250px;
}
</style>

';

echo '
<input id="myplugin_noncename" name="myplugin_noncename" type="hidden" value="' .
    wp_create_nonce( plugin_basename(__FILE__) ) . '" />';  ?>
<h5><?php _e('Parent') ?></h5>

<label for="post_parent">Please select the parent of this post</label>

<?php 

$currentid = $_GET['post'];
wp_dropdown_posts(array('exclude_tree'             => $currentid,
                            'selected'             => $post->post_parent,
                            'name'                 => 'parent_id',
                            'show_option_none'     => __('Main Post (no parent)'),
                            'sort_column'        => 'menu_order, post_title'));
 }

/* Prints the edit form for pre-WordPress 2.5 post/page */
function myplugin_old_custom_box() {

  echo '
<div class="dbx-b-ox-wrapper">' . "\n";
  echo '
<fieldset id="myplugin_fieldsetid" class="dbx-box">' . "\n";
  echo '
<div class="dbx-h-andle-wrapper">
<h3 class="dbx-handle">' .
        __( 'WP Sub Posts', 'myplugin_textdomain' ) . "</h3>
</div>

";   

  echo '
<div class="dbx-c-ontent-wrapper">
<div class="dbx-content">';

  // output editing form

  myplugin_inner_custom_box();

  // end wrapper

  echo "</div>
</div>
</fieldset>
</div>

\n";
}

/* When the post is saved, saves our custom data */
function myplugin_save_postdata( $post_id ) {

  // verify this came from the our screen and with proper authorization,
  // because save_post can be triggered at other times

  if ( !wp_verify_nonce( $_POST['myplugin_noncename'], plugin_basename(__FILE__) )) {
    return $post_id;
  }

  // verify if this is an auto save routine. If it is our form has not been submitted, so we dont want
  // to do anything
  if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE )
    return $post_id;

  // Check permissions
  if ( 'page' == $_POST['post_type'] ) {
    if ( !current_user_can( 'edit_page', $post_id ) )
      return $post_id;
  } else {
    if ( !current_user_can( 'edit_post', $post_id ) )
      return $post_id;
  }

  // OK, we're authenticated: we need to find and save the data

  $mydata = $_POST['parent_id'];

   return $mydata;
}

add_filter('posts_where','where_no_parent');
add_filter ('the_content','subpost_template', 1, 2 );

function subpost_template($content) {

    if(is_singular) {
    remove_filter('posts_where','where_no_parent');
    }
    echo $content;

    $idnya = get_the_ID();
    $child = new WP_Query("post_type=post&post_parent=".$idnya."");

    while($child->have_posts()) : $child->the_post();
    echo '
<blockquote>

';
    echo '
<h3>';
    the_title();

    echo '</h3>

';
    $childid =  get_the_ID();
    the_content();

    edit_post_link('Edit','','',$childid);
    echo '</blockquote>

';

    endwhile;
    wp_reset_query();
}

function where_no_parent($where) {
    global $wpdb;
     $where .= " AND post_parent  = 0";
     return $where;
}
?>

?>
Revision by polvocdo

subpost_template()

subpost_template()

<?php


    if(is_singular()) {
        remove_filter('posts_where','where_no_parent');
    }

    $parentID = get_the_ID();
       $childposts = get_posts(array(
                                'post_type' => 'post',
                                'numberposts' => -1,
                                'post_status' => 'publish',
                                'post_parent' => $parentID
                                ));
      $subcontent = "";
    foreach($childposts as $childpost){
        $subcontent .= "
<blockquote>

";
        $subcontent .= "
<h3>".$childpost->post_title."</h3>

";
        $subcontent .= $childpost->post_content;
        $subcontent .= '

<a rel="nofollow" href="'.get_edit_post_link($childpost->ID).'">Edit</a>

';
        $subcontent .= "</blockquote>

";
    }

    $content .= $subcontent;

    return $content;
}

<p>?>

WP Dropdown Post

wp_dropdown_posts()

<?php</p>
$currentid = $_GET['post'];
wp_dropdown_posts(array('exclude_tree'             => $currentid,
                            'selected'             => $post->post_parent,
                            'name'                 => 'parent_id',
                            'show_option_none'     => __('Main Post (no parent)'),
                            'sort_column'        => 'menu_order, post_title'));

<p>?>
Download

You can download alpha version of this plugin here http://cektkp.com/wpsubpost
If it not working please Click here

Warning

This plugin is Alpha version, use it for testing purpose only. Any problem caused by this plugin is not my responsibility.

Demo:

See below:

Code Update WP Sub Post

There are some changes to the WP Sub Post:

  • Fixed/Added, now child post can be viewed as a single post, with link to the Parent Post instead of displaying blank post with 'Post not found' title.
  • Added, CSS class and id to the blockquote of the child post. It would be useful to make a link like http://example.com/parentpost.html#childpostXXX. while XXX is your child post ID.

Two functions that are changed subpost_template() and where_no_parent()

WP Sub Post

<?php
function subpost_template($content) {
global $post;

$parentID = get_the_ID();
       $childposts = get_posts(array(
                                'post_type' => 'post',
                                'numberposts' => -1,
                                'post_status' => 'publish',
                                'post_parent' => $parentID
                                ));
      $subcontent = "";
    foreach($childposts as $childpost){
        $subcontent .= "
<blockquote class=\"sub_post\" id=\"subpost_".$childpost->ID."\">";
        $subcontent .= "
<h3>".$childpost->post_title."</h3>

";
        $subcontent .= $childpost->post_content;
        $subcontent .= '
<p class="postmetadata"><small>This sub post was added on: '.date('l, dS F, Y',strtotime($childpost->post_date)).' <a href="'.get_edit_post_link($childpost->ID).'" rel="nofollow">Edit</a></small>

';
        $subcontent .= "</blockquote>

";
    }

        if($post->post_parent !== 0) {

        $parent_info = '
<blockquote>This post is a child post of <strong>'.get_the_title($post->post_parent).'</strong>. To view the parent post, please <a href="'.get_permalink($post->post_parent).'">click here.</a></blockquote>

';
        $content = $parent_info.$content;
        }

    $content .= $subcontent;
    return $content;
}

function where_no_parent($where) {
    global $wpdb;
    if(!is_single()) {
     $where .= " AND post_parent  = 0";
    }
    else {
    $where .= " AND post_type = 'post'";
    }
    return $where;
}

<p>?>

This sub post was added on: Tuesday, 09th February, 2010 Edit

Finally you can see the demo here

Yesterday, I was failed to add a demo directly in this site because of incompatibility with smart tags (all smart tags are not working when WP Sub Post is activated).

The problem comes from my old stupid function subpost_template():D

Thanks and sorry to polvocdo :) , actually your revision is the answer.
Ha ha I'm forget to replace mine with your revision  :hammer: ....


This sub post was added on: Friday, 29th January, 2010 Edit

This is a child post

This is an individual post (http://takien.com/536/this-is-a-child-post.php) that attached to the another post ( http://takien.com/550/wordpress-plugin-wp-sub-post.php)

image on the child post

Child post could be useful when you want to add an additional information to the main post,  news analysis, or update. Instead of editing the main post, you can now simply Add New post and mark it as child post.

Child post also has it's own functionality, can handle attachment, displaying image. etc.

But you can't see this post in the post editing page (wp-admin/edit.php) because of filter  in the plugin to prevent child post to be displayed individually in the main page, post listing, feed, etc.  Hahaha.. don't worry, I will fix it soon.

This sub post was added on: Wednesday, 27th January, 2010 Edit

Incoming search terms:

]]> http://takien.com/550/wordpress-plugin-wp-sub-post.php/feed 17 PHP: Keep HTML Tags Pairedhttp://takien.com/516/php-keep-html-tags-paired.php http://takien.com/516/php-keep-html-tags-paired.php#comments Fri, 13 Nov 2009 18:50:40 +0000 takien http://takien.com/?p=516 After applying substr to a string that contains HTML tags, usually I found that the result is broken because the closing tags are truncated.

To prevent this, I have made a function that keep the closing tags remains and will not break the appearance of my website.

Here is the function:

HTML Pair Tags

<?php</p>
function pair_tag($string) {
$tags = Array('em','i','b','strong','div','span','p');
//array of tags we will keep paired, you may add another
foreach($tags as $tag) {

$opentag     = substr_count($string, '<'.$tag);
// I don't put > in the opentag in case they may have an attribute
$closetag     = substr_count($string, '</'.$tag.'>');

if($opentag !== $closetag) {
$return .= str_repeat('</'.$tag.'>', ($opentag-$closetag));
}
}
return $return;
}
<p>?>

Usage/Example:

Example

<?php</p>
$excerpt = substr($string, 0, 20);  //only display first 20 character
$excerpt .= pair_tag($excerpt); // this will count any unclosed tags then close it.
echo $excerpt; // returns <p>This is my first pos</p>
<p>?>

Feedback and comment are welcome. Thanks

Incoming search terms:

]]> http://takien.com/516/php-keep-html-tags-paired.php/feed 4 How to fix ‘Function eregi() is deprecated’ in PHP 5.3.0?http://takien.com/513/how-to-fix-function-eregi-is-deprecated-in-php-5-3-0.php http://takien.com/513/how-to-fix-function-eregi-is-deprecated-in-php-5-3-0.php#comments Wed, 21 Oct 2009 10:41:18 +0000 takien http://takien.com/?p=513 I used to use eregi for validating email address input that matches to the regular expression.

<?php
if(!eregi("^[_\.0-9a-zA-Z-]+@([0-9a-zA-Z][0-9a-zA-Z-]+\.)+[a-zA-Z]{2,6}$", $str)) {
    $msg = 'email is not valid';
}
else {
$valid = true;
}
<p>?>

That would return true if given email address is matches to username@domain.ext pattern. Unfortunately, after upgrading PHP to the earlier version (5.3.0), it wont work properly. This is because eregi is one of several functions that are deprecated in the new version of PHP.

Solution:
Use preg_match with the 'i' modifier instead. i means that regular expression is case insensitive. So the code become like this:

<?php
if(!preg_match("/^[_\.0-9a-zA-Z-]+@([0-9a-zA-Z][0-9a-zA-Z-]+\.)+[a-zA-Z]{2,6}$/i", $str)) {
    $msg = 'email is not valid';
}
else {
$valid = true;
}
<p>?>

The list of functions that are deprecated in PHP 5.3.0:

  • call_user_method() (use call_user_func() instead)
  • call_user_method_array() (use call_user_func_array() instead)
  • define_syslog_variables()
  • dl()
  • ereg() (use preg_match() instead)
  • ereg_replace() (use preg_replace() instead)
  • eregi() (use preg_match() with the 'i' modifier instead)
  • eregi_replace() (use preg_replace() with the 'i' modifier instead)
  • set_magic_quotes_runtime() and its alias, magic_quotes_runtime()
  • session_register() (use the $_SESSION superglobal instead)
  • session_unregister() (use the $_SESSION superglobal instead)
  • session_is_registered() (use the $_SESSION superglobal instead)
  • set_socket_blocking() (use stream_set_blocking() instead)
  • split() (use preg_split() instead)
  • spliti() (use preg_split() with the 'i' modifier instead)
  • sql_regcase()
  • mysql_db_query() (use mysql_select_db() and mysql_query() instead)
  • mysql_escape_string() (use mysql_real_escape_string() instead)
  • Passing locale category names as strings is now deprecated. Use the LC_* family of constants instead.
  • The is_dst parameter to mktime(). Use the new timezone handling functions instead.

Ref:

http://php.net/manual/en/migration53.deprecated.php

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