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Sweet PHP pros to the rescue. Easy code placement question.

vettebro1

By vettebro1
in Third Party Scripts

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vettebro1 Newbie

vettebro1

Posted
Posted

Hi All, Here is a third party plugin called advanced_excerpt for wordpress. It basically will truncate a long post to a specified character amount while leaving HTML formatting intact.

 

When a post is truncated the ending line of the truncated post has this from a input field in a settings page applied:

<th scope="row"><label for="<?php echo $this->name ?>_ellipsis"><?php _e("Ellipsis:", $this->text_domain); ?></label></th>

 

I want to append this to it so any post that gets truncated will have a link to display the full post.

 

<a class="more" href="<?php the_permalink() ?><?php print $urlType; ?>" rel="nofollow"><span><?php print $readType; ?></span></a>

 

 

Here is the php code from the author. 

<?php
/*
Plugin Name: Advanced Excerpt
Plugin URI: http://sparepencil.com/code/advanced-excerpt/
Description: Several improvements over WP's default excerpt. The size of the excerpt can be limited using character or word count, and HTML markup is not removed.
Version: 0.2.2
Author: Bas van Doren
Author URI: http://sparepencil.com/

Copyright 2007 Bas van Doren

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

if(!class_exists('AdvancedExcerpt')) :
class AdvancedExcerpt
{
var $name;
var $text_domain;
var $mb;

var $skip_next_call;

function AdvancedExcerpt()
{
	$this->name = strtolower(get_class($this));
	$this->text_domain = $this->name;
	$this->skip_next_call = false;
	$this->charset = get_bloginfo('charset');

	// Carefully support multibyte languages
	if(extension_loaded('mbstring') && function_exists('mb_list_encodings'))
		$this->mb = in_array($this->charset, mb_list_encodings());

	load_plugin_textdomain($this->text_domain, PLUGINDIR . '/advanced-excerpt/');

	register_activation_hook(__FILE__, array(&$this, 'install'));

	// Nothing to do on deactivation
	//register_deactivation_hook(__FILE__, array(&$this, 'uninstall'));

	add_action('admin_menu', array(&$this, 'add_pages'));

	// Replace the default filter (see /wp-includes/default-filters.php)
	remove_filter('get_the_excerpt', 'wp_trim_excerpt');
	add_filter('get_the_excerpt', array(&$this, 'filter'));
}

function __construct()
{
	self::AdvancedExcerpt();
}

function filter($text, $length = null, $use_words = null, $ellipsis = null, $allowed_tags = null, $no_custom = null, $api_used = false)
{
	global $id, $post;

	// Avoid trouble when the API (aka template tag) was used
	if($this->skip_next_call)
	{
		$this->skip_next_call = false;
		return $text;
	}
	$this->skip_next_call = $api_used;

	$no_custom = (!is_null($no_custom)) ? (int) (bool) $no_custom : get_option($this->name . '_no_custom');

	// Only make the excerpt if it does not exist or 'No Custom Excerpt' is set to true
	if('' == $text || $no_custom)
	{
		$length = (!is_null($length)) ? (int) $length : get_option($this->name . '_length');
		$use_words = (!is_null($use_words)) ? (int) (bool) $use_words : get_option($this->name . '_use_words');
		$ellipsis = (!is_null($ellipsis)) ? $ellipsis : get_option($this->name . '_ellipsis');

		$allowed_tags = (is_array($allowed_tags)) ? $allowed_tags : get_option($this->name . '_allowed_tags');
		$allowed_tags = '<' . implode('><', $allowed_tags) . '>';

		$text = apply_filters('the_content', get_the_content(''));

		// From the default wp_trim_excerpt():
		// Some kind of precaution against malformed CDATA in RSS feeds I suppose
		$text = str_replace(']]>', ']]>', $text);
		$text = strip_tags($text, $allowed_tags);

		if(1 == $use_words)
		{
			// Count words, not HTML tags
			if($length > count(preg_split('/[\s]+/', strip_tags($text), -1)))
				return $text;

			// Now we start counting
			$text_bits = preg_split('/([\s]+)/', $text, -1, PREG_SPLIT_DELIM_CAPTURE);
			$in_tag = false;
			$n_words = 0;
			$text = '';
			foreach($text_bits as $chunk)
			{
				// Determine whether a tag is opened (and not immediately closed) in this chunk
				if(0 < preg_match('/<[^>]*$/s', $chunk))
					$in_tag = true;
				elseif(0 < preg_match('/>[^<]*$/s', $chunk))
					$in_tag = false;

				// This should check if there is a word before the tag
				// but it doesn't work very well
				/*
				if($in_tag && $this->substr($chunk, 0, 1) != '<')
					$n_words++;
				*/

				// Is there a word?
				if(!$in_tag && '' != trim($chunk) && $this->substr($chunk, -1, 1) != '>')
					$n_words++;

				$text .= $chunk;

				if($n_words >= $length && !$in_tag)
					break;
			}
			$text = $text . $ellipsis;
		}
		else
		{
			// Count characters, not whitespace, not those belonging to HTML tags
			if($length > $this->strlen(strip_tags($text)))
				return $text;

			$in_tag = false;
			$n_chars = 0;
			for($i = 0; $n_chars < $length || $in_tag; $i++)
			{
				// Is the character worth counting (ie. not part of an HTML tag)
				if($this->substr($text, $i, 1) == '<')
					$in_tag = true;
				elseif($this->substr($text, $i, 1) == '>')
					$in_tag = false;
				elseif(!$in_tag && '' != trim($this->substr($text, $i, 1)))
					$n_chars++;

				// Prevent eternal loops (this could happen with incomplete HTML tags)
				if($i >= $this->strlen($text) - 1)
					break;
			}
			$text = $this->substr($text, 0, $i) . $ellipsis;
		}
		$text = force_balance_tags($text);
	}
	return $text;
}

function update_options()
{
	$length = (int) $_POST[$this->name . '_length'];
	$use_words = ('on' == $_POST[$this->name . '_use_words']) ? 1 : 0 ;
	$no_custom = ('on' == $_POST[$this->name . '_no_custom']) ? 1 : 0 ;

	$ellipsis = (get_magic_quotes_gpc() == 1) ? stripslashes($_POST[$this->name . '_ellipsis']) : $_POST[$this->name . '_ellipsis'];
	$ellipsis = $ellipsis;

	$allowed_tags = (array) $_POST[$this->name . '_allowed_tags'];

	update_option($this->name . '_length', $length);
	update_option($this->name . '_use_words', $use_words);
	update_option($this->name . '_no_custom', $no_custom);
	update_option($this->name . '_ellipsis', $ellipsis);
	update_option($this->name . '_allowed_tags', $allowed_tags);
?>
<div id="message" class="updated fade"><p>Options saved.</p></div>
<?php
}


function page_options()
{
	global $allowedposttags;

	if ('POST' == $_SERVER['REQUEST_METHOD'])
	{
		check_admin_referer($this->name . '_update_options');
		$this->update_options();
	}

	$length = get_option($this->name . '_length');
	$use_words = get_option($this->name . '_use_words');
	$no_custom = get_option($this->name . '_no_custom');
	$ellipsis = htmlentities(get_option($this->name . '_ellipsis'));
	$allowed_tags = get_option($this->name . '_allowed_tags');
?>
<div class="wrap">
<div id="icon-options-general" class="icon32"><br /></div>
<h2><?php _e("Advanced Excerpt Options", $this->text_domain); ?></h2>
<form method="post" action="">
<?php
	if ( function_exists('wp_nonce_field') )
		wp_nonce_field($this->name . '_update_options'); ?>

	<table class="form-table">
		<tr valign="top">
			<th scope="row"><label for="<?php echo $this->name ?>_length"><?php _e("Excerpt Length:", $this->text_domain); ?></label></th>
			<td>
				<input name="<?php echo $this->name ?>_length" type="text" id="<?php echo $this->name ?>_length" value="<?php echo $length; ?>" size="2" />
				<input name="<?php echo $this->name ?>_use_words" type="checkbox" id="<?php echo $this->name ?>_use_words" value="on" <?php echo (1 == $use_words) ? 'checked="checked" ': ''; ?>/> <?php _e("Use words?", $this->text_domain); ?>
			</td>
		</tr>
		<tr valign="top">
			<th scope="row"><label for="<?php echo $this->name ?>_ellipsis"><?php _e("Ellipsis:", $this->text_domain); ?></label></th>
			<td>
				<input name="<?php echo $this->name ?>_ellipsis" type="text" id="<?php echo $this->name ?>_ellipsis" value="<?php echo $ellipsis; ?>" size="5" /> <?php _e('(use <a href="http://www.w3schools.com/tags/ref_entities.asp">HTML entities</a>)', $this->text_domain); ?>
				<br />
				<?php _e("Will substitute the part of the post that is omitted in the excerpt.", $this->text_domain); ?>
			</td>
		</tr>
		<tr valign="top">
			<th scope="row"><label for="<?php echo $this->name ?>_no_custom"><?php _e("No Custom Excerpts:", $this->text_domain); ?></label></th>
			<td>
				<input name="<?php echo $this->name ?>_no_custom" type="checkbox" id="<?php echo $this->name ?>_no_custom" value="on" <?php echo (1 == $no_custom) ? 'checked="checked" ': ''; ?>/>
				<?php  _e("Generate excerpts even if a post has a custom excerpt attached.", $this->text_domain); ?>
			</td>
		</tr>
		<tr valign="top">
			<th scope="row"><?php _e("Keep Markup:", $this->text_domain); ?></th>
			<td>
				<table>
<?php
	$i = 0;
	foreach($allowedposttags as $tag => $spec) :
		if(1 == $i / 4) : ?><tr><?php endif;
		$i++;
	?>
				<td><input name="<?php echo $this->name ?>_allowed_tags[]" type="checkbox" id="<?php echo $this->name ?>_allow_<?php echo $tag; ?>" value="<?php echo $tag; ?>" <?php echo (in_array($tag, $allowed_tags)) ? 'checked="checked" ': ''; ?>/> <code><?php echo $tag; ?></code></td><?php if(1 == $i / 4) : $i = 0; ?></tr><?php endif;?>
<?php
	endforeach;
	if(1 != $i / 4) : ?><td colspan="<?php echo (4 - $i); ?>"> </td></tr><?php endif;?>
				</table>
				<!--<?php _e("See <a href=\"http://xref.redalt.com/wptrunk/nav.htm?wp-includes/kses.php.source.htm\"><code>wp-includes/kses.php</code></a> if you want to control more tags.", $this->text_domain); ?>-->
			</td>
		</tr>
	</table>
	<p class="submit"><input type="submit" name="Submit" class="button-primary" value="<?php _e("Save Changes", $this->text_domain); ?>" /></p>
</form>
</div>
<?php
}

function add_pages()
{
	add_options_page(__("Advanced Excerpt Options", $this->text_domain), __("Excerpt", $this->text_domain), 'manage_options', 'options-' . $this->name, array(&$this, 'page_options'));
}

function install()
{
	global $allowedposttags;
	foreach($allowedposttags as $tag => $spec)
		$allowed_tags[] = $tag;
	add_option($this->name . '_length', 40);
	add_option($this->name . '_use_words', 1);
	add_option($this->name . '_no_custom', 0);
	add_option($this->name . '_ellipsis', '…');
	add_option($this->name . '_allowed_tags', $allowed_tags);
}

function uninstall()
{
	// Nothing to do (note: deactivation hook is also disabled)
}

// Careful multibyte support (fallback to normal functions if not available)
function substr($str, $start, $length = null)
{
	$length = (is_null($length)) ? $this->strlen($str) : $length;
	if($this->mb)
		return mb_substr($str, $start, $length, $this->charset);
	else
		return substr($str, $start, $length);
}

function strlen($str)
{
	if($this->mb)
		return mb_strlen($str, $this->charset);
	else
		return strlen($str);
}

// PHP seems to lack a simple complement function for arrays
function array_complement($a, $b)
{
	$a = array_unique($a);
	$b = array_unique($b);
	$c = array();
	foreach($a as $t)
	{
		if(!in_array($t, $b))
			$c[] = $t;
	}
}
}

$advancedexcerpt = new AdvancedExcerpt();

function the_advanced_excerpt($args = '')
{
global $advancedexcerpt;
$defaults = array(
'length' => get_option($advancedexcerpt->name . '_length'),
'use_words' => get_option($advancedexcerpt->name . '_use_words'),
'no_custom' => get_option($advancedexcerpt->name . '_no_custom'),
// URL encode, because URL decode is used on this setting later
'ellipsis' => urlencode(get_option($advancedexcerpt->name . '_ellipsis')),
'allow_tags' => implode(',', get_option($advancedexcerpt->name . '_allowed_tags')),
'exclude_tags' => '');

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

extract($r, EXTR_SKIP);

$allow_tags = preg_split('/[\s,]+/', $allow_tags);
$exclude_tags = preg_split('/[\s,]+/', $exclude_tags);
$ellipsis = urldecode($ellipsis);

// {allow_tags} - {exclude_tags}
$allow_tags = $advancedexcerpt->array_complement($allow_tags, $exclude_tags);

// All filters are applied, however, the advanced excerpt now behaves like a priorite 1 filter, instead of the default priority 10
$text = $advancedexcerpt->filter('', $length, $use_words, $ellipsis, $allow_tags, $no_custom, true);
$text = apply_filters('get_the_excerpt', $text);
echo "hello"; 
echo apply_filters('the_excerpt', $text);

}
endif;

 

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