WordPress/wp-includes/template-functions-post.php

<?php

// Default filters
add_filter('the_title', 'convert_chars');
add_filter('the_title', 'trim');

add_filter('the_title_rss', 'strip_tags');

add_filter('the_content', 'convert_smilies');
add_filter('the_content', 'convert_chars');
add_filter('the_content', 'wpautop');

add_filter('the_excerpt', 'convert_smilies');
add_filter('the_excerpt', 'autop');
add_filter('the_excerpt', 'convert_chars');
add_filter('the_excerpt', 'wpautop');

function get_the_password_form() {
    $output = '<form action="' . get_settings('siteurl') . '/wp-pass.php" method="post">
    <p>This post is password protected. To view it please enter your password below:</p>
    <p><label>Password: <input name="post_password" type="text" size="20" /></label> <input type="submit" name="Submit" value="Submit" /></p>
    </form>
    ';
	return $output;
}

function the_ID() {
	global $id;
	echo $id;
}

function the_title($before = '', $after = '', $echo = true) {
	$title = get_the_title();
	if (!empty($title)) {
		$title = apply_filters('the_title', $before . $title . $after);
		if ($echo)
			echo $title;
		else
			return $title;
	}
}

function the_title_rss() {
	$title = get_the_title();
	$title = apply_filters('the_title', $title);
	$title = apply_filters('the_title_rss', $title);
	echo $title;
}

function get_the_title() {
	global $post;
	$output = stripslashes($post->post_title);
	if (!empty($post->post_password)) { // if there's a password
		$output = 'Protected: ' . $output;
	}
	return $output;
}

function the_content($more_link_text = '(more...)', $stripteaser = 0, $more_file = '') {
    $content = get_the_content($more_link_text, $stripteaser, $more_file);
    $content = apply_filters('the_content', $content);
    echo $content;
}

function the_content_rss($more_link_text='(more...)', $stripteaser=0, $more_file='', $cut = 0, $encode_html = 0) {
	$content = get_the_content($more_link_text, $stripteaser, $more_file);
	$content = apply_filters('the_content', $content);
	if ($cut && !$encode_html) {
		$encode_html = 2;
	}
	if ($encode_html == 1) {
		$content = htmlspecialchars($content);
		$cut = 0;
	} elseif ($encode_html == 0) {
		$content = make_url_footnote($content);
	} elseif ($encode_html == 2) {
		$content = strip_tags($content);
	}
	if ($cut) {
		$blah = explode(' ', $content);
		if (count($blah) > $cut) {
			$k = $cut;
			$use_dotdotdot = 1;
		} else {
			$k = count($blah);
			$use_dotdotdot = 0;
		}
		for ($i=0; $i<$k; $i++) {
			$excerpt .= $blah[$i].' ';
		}
		$excerpt .= ($use_dotdotdot) ? '...' : '';
		$content = $excerpt;
	}
	echo $content;
}

function get_the_content($more_link_text = '(more...)', $stripteaser = 0, $more_file = '') {
    global $id, $post, $more, $single, $withcomments, $page, $pages, $multipage, $numpages;
    global $HTTP_SERVER_VARS, $preview, $cookiehash;
    global $pagenow;
    $output = '';

    if (!empty($post->post_password)) { // if there's a password
        if ($_COOKIE['wp-postpass_'.$cookiehash] != $post->post_password) {  // and it doesn't match the cookie
            $output = get_the_password_form();
            return $output;
        }
    }

    if ($more_file != '') {
        $file = $more_file;
    } else {
        $file = $pagenow; //$HTTP_SERVER_VARS['PHP_SELF'];
    }
    $content = $pages[$page-1];
    $content = explode('<!--more-->', $content);
    if ((preg_match('/<!--noteaser-->/', $post->post_content) && ((!$multipage) || ($page==1))))
        $stripteaser = 1;
    $teaser = $content[0];
    if (($more) && ($stripteaser))
        $teaser = '';
    $output .= $teaser;
    if (count($content)>1) {
        if ($more) {
            $output .= '<a id="more-'.$id.'"></a>'.$content[1];
        } else {
            $output .= ' <a href="'. get_permalink() . "#more-$id\">$more_link_text</a>";
        }
    }
    if ($preview) { // preview fix for javascript bug with foreign languages
        $output =  preg_replace('/\%u([0-9A-F]{4,4})/e',  "'&#'.base_convert('\\1',16,10).';'", $output);
    }
    return $output;
}

function the_excerpt() {
    echo apply_filters('the_excerpt', get_the_excerpt());
}

function the_excerpt_rss($cut = 0, $encode_html = 0) {
    $output = get_the_excerpt(true);

    $output = convert_chars($output);
    if ($cut && !$encode_html) {
        $encode_html = 2;
    }
    if ($encode_html == 1) {
        $output = htmlspecialchars($output);
        $cut = 0;
    } elseif ($encode_html == 0) {
        $output = make_url_footnote($output);
    } elseif ($encode_html == 2) {
        $output = strip_tags($output);
    }
    if ($cut) {
        $excerpt = '';
        $blah = explode(' ', $output);
        if (count($blah) > $cut) {
            $k = $cut;
            $use_dotdotdot = 1;
        } else {
            $k = count($blah);
            $use_dotdotdot = 0;
        }
        for ($i=0; $i<$k; $i++) {
            $excerpt .= $blah[$i].' ';
        }
        $excerpt .= ($use_dotdotdot) ? '...' : '';
        $output = $excerpt;
    }
    echo $output;
}

function get_the_excerpt($fakeit = true) {
    global $id, $post;
    global $HTTP_SERVER_VARS, $preview, $cookiehash;
    $output = '';
    $output = stripslashes($post->post_excerpt);
    if (!empty($post->post_password)) { // if there's a password
        if ($_COOKIE['wp-postpass_'.$cookiehash] != $post->post_password) {  // and it doesn't match the cookie
            $output = 'There is no excerpt because this is a protected post.';
            return $output;
        }
    }
    //if we haven't got an excerpt, make one in the style of the rss ones
    if (($output == '') && $fakeit) {
        $output = get_the_content();
        $output = strip_tags($output);
        $blah = explode(' ', $output);
        $excerpt_length = 120;
        if (count($blah) > $excerpt_length) {
            $k = $excerpt_length;
            $use_dotdotdot = 1;
        } else {
            $k = count($blah);
            $use_dotdotdot = 0;
        }
        $excerpt = '';
        for ($i=0; $i<$k; $i++) {
            $excerpt .= $blah[$i].' ';
        }
        $excerpt .= ($use_dotdotdot) ? '...' : '';
        $output = $excerpt;
    } // end if no excerpt
    if ($preview) { // preview fix for javascript bug with foreign languages
        $output =  preg_replace('/\%u([0-9A-F]{4,4})/e',  "'&#'.base_convert('\\1',16,10).';'", $output);
    }
    return $output;
}


function link_pages($before='<br />', $after='<br />', $next_or_number='number', $nextpagelink='next page', $previouspagelink='previous page', $pagelink='%', $more_file='') {
    global $id, $page, $numpages, $multipage, $more;
    global $pagenow;
    global $querystring_start, $querystring_equal, $querystring_separator;
    if ($more_file != '') {
        $file = $more_file;
    } else {
        $file = $pagenow;
    }
    if (($multipage)) {
        if ($next_or_number=='number') {
            echo $before;
            for ($i = 1; $i < ($numpages+1); $i = $i + 1) {
                $j=str_replace('%',"$i",$pagelink);
                echo ' ';
                if (($i != $page) || ((!$more) && ($page==1))) {
                if ('' == get_settings('permalink_structure')) {
                    echo '<a href="'.get_permalink().$querystring_separator.'page'.$querystring_equal.$i.'">';
                } else {
                    echo '<a href="'.get_permalink().$i.'/">';
                }
                }
                echo $j;
                if (($i != $page) || ((!$more) && ($page==1)))
                    echo '</a>';
            }
            echo $after;
        } else {
            if ($more) {
                echo $before;
                $i=$page-1;
                if ($i && $more) {
                if ('' == get_settings('permalink_structure')) {
                    echo '<a href="'.get_permalink().$querystring_separator.'page'.$querystring_equal.$i.'">';
                } else {
                    echo '<a href="'.get_permalink().$i.'/">';
                }
                }
                $i=$page+1;
                if ($i<=$numpages && $more) {
                if ('' == get_settings('permalink_structure')) {
                    echo '<a href="'.get_permalink().$querystring_separator.'page'.$querystring_equal.$i.'">';
                } else {
                    echo '<a href="'.get_permalink().$i.'/">';
                }
                }
                echo $after;
            }
        }
    }
}


function previous_post($format='%', $previous='previous post: ', $title='yes', $in_same_cat='no', $limitprev=1, $excluded_categories='') {
    global $tableposts, $id, $post, $siteurl, $blogfilename, $wpdb;
    global $p, $posts, $posts_per_page, $s, $single;
    global $querystring_start, $querystring_equal, $querystring_separator;

    if(($p) || ($posts_per_page == 1) || 1 == $single) {

        $current_post_date = $post->post_date;
        $current_category = $post->post_category;

        $sqlcat = '';
        if ($in_same_cat != 'no') {
            $sqlcat = " AND post_category = '$current_category' ";
        }

        $sql_exclude_cats = '';
        if (!empty($excluded_categories)) {
            $blah = explode('and', $excluded_categories);
            foreach($blah as $category) {
                $category = intval($category);
                $sql_exclude_cats .= " AND post_category != $category";
            }
        }

        $limitprev--;
        $lastpost = @$wpdb->get_row("SELECT ID, post_title FROM $tableposts WHERE post_date < '$current_post_date' AND post_status = 'publish' $sqlcat $sql_exclude_cats ORDER BY post_date DESC LIMIT $limitprev, 1");
        if ($lastpost) {
            $string = '<a href="'.get_permalink($lastpost->ID).'">'.$previous;
            if ($title == 'yes') {
                $string .= wptexturize(stripslashes($lastpost->post_title));
            }
            $string .= '</a>';
            $format = str_replace('%', $string, $format);
            echo $format;
        }
    }
}

function next_post($format='%', $next='next post: ', $title='yes', $in_same_cat='no', $limitnext=1, $excluded_categories='') {
    global $tableposts, $p, $posts, $id, $post, $siteurl, $blogfilename, $wpdb;
    global $time_difference, $single;
    global $querystring_start, $querystring_equal, $querystring_separator;
    if(($p) || ($posts==1) || 1 == $single) {

        $current_post_date = $post->post_date;
        $current_category = $post->post_category;

        $sqlcat = '';
        if ($in_same_cat != 'no') {
            $sqlcat = " AND post_category='$current_category' ";
        }

        $sql_exclude_cats = '';
        if (!empty($excluded_categories)) {
            $blah = explode('and', $excluded_categories);
            foreach($blah as $category) {
                $category = intval($category);
                $sql_exclude_cats .= " AND post_category != $category";
            }
        }

        $now = date('Y-m-d H:i:s',(time() + ($time_difference * 3600)));

        $limitnext--;

        $nextpost = @$wpdb->get_row("SELECT ID,post_title FROM $tableposts WHERE post_date > '$current_post_date' AND post_date < '$now' AND post_status = 'publish' $sqlcat $sql_exclude_cats ORDER BY post_date ASC LIMIT $limitnext,1");
        if ($nextpost) {
            $string = '<a href="'.get_permalink($nextpost->ID).'">'.$next;
            if ($title=='yes') {
                $string .= wptexturize(stripslashes($nextpost->post_title));
            }
            $string .= '</a>';
            $format = str_replace('%', $string, $format);
            echo $format;
        }
    }
}

function next_posts($max_page = 0) { // original by cfactor at cooltux.org
    global $HTTP_SERVER_VARS, $siteurl, $blogfilename, $p, $paged, $what_to_show, $pagenow;
    global $querystring_start, $querystring_equal, $querystring_separator;
    if (empty($p) && ($what_to_show == 'paged')) {
        $qstr = $HTTP_SERVER_VARS['QUERY_STRING'];
        if (!empty($qstr)) {
            $qstr = preg_replace('/&paged=\d{0,}/', '', $qstr);
            $qstr = preg_replace('/paged=\d{0,}/', '', $qstr);
        } elseif (stristr($HTTP_SERVER_VARS['REQUEST_URI'], $HTTP_SERVER_VARS['SCRIPT_NAME'] )) {
            if ('' != $qstr = str_replace($HTTP_SERVER_VARS['SCRIPT_NAME'], '',
                                            $HTTP_SERVER_VARS['REQUEST_URI']) ) {
                $qstr = preg_replace('/^\//', '', $qstr);
                $qstr = preg_replace('/paged\/\d{0,}\//', '', $qstr);
                $qstr = preg_replace('/paged\/\d{0,}/', '', $qstr);
                $qstr = preg_replace('/\/$/', '', $qstr);
            }
        }
        if (!$paged) $paged = 1;
        $nextpage = intval($paged) + 1;
        if (!$max_page || $max_page >= $nextpage) {
            echo  $siteurl.'/'.$pagenow.$querystring_start.
                ($qstr == '' ? '' : $qstr.$querystring_separator) .
                'paged'.$querystring_equal.$nextpage;
        }
    }
}

function next_posts_link($label='Next Page &raquo;', $max_page=0) {
    global $p, $paged, $result, $request, $posts_per_page, $what_to_show, $wpdb;
    if ($what_to_show == 'paged') {
        if (!$max_page) {
            $nxt_request = $request;
            //if the query includes a limit clause, call it again without that
            //limit clause!
            if ($pos = strpos(strtoupper($request), 'LIMIT')) {
                $nxt_request = substr($request, 0, $pos);
            }
            $nxt_result = $wpdb->query($nxt_request);
            $numposts = $wpdb->num_rows;
            $max_page = ceil($numposts / $posts_per_page);
        }
        if (!$paged)
            $paged = 1;
        $nextpage = intval($paged) + 1;
        if (empty($p) && (empty($paged) || $nextpage <= $max_page)) {
            echo '<a href="';
            next_posts($max_page);
            echo '">'. preg_replace('/&([^#])(?![a-z]{1,8};)/', '&#038;$1', $label) .'</a>';
        }
    }
}


function previous_posts() { // original by cfactor at cooltux.org
    global $HTTP_SERVER_VARS, $siteurl, $blogfilename, $p, $paged, $what_to_show, $pagenow;
    global $querystring_start, $querystring_equal, $querystring_separator;
    if (empty($p) && ($what_to_show == 'paged')) {
        $qstr = $HTTP_SERVER_VARS['QUERY_STRING'];
        if (!empty($qstr)) {
            $qstr = preg_replace('/&paged=\d{0,}/', '', $qstr);
            $qstr = preg_replace('/paged=\d{0,}/', '', $qstr);
        } elseif (stristr($HTTP_SERVER_VARS['REQUEST_URI'], $HTTP_SERVER_VARS['SCRIPT_NAME'] )) {
            if ('' != $qstr = str_replace($HTTP_SERVER_VARS['SCRIPT_NAME'], '',
                                            $HTTP_SERVER_VARS['REQUEST_URI']) ) {
                $qstr = preg_replace('/^\//', '', $qstr);
                $qstr = preg_replace("/paged\/\d{0,}\//", '', $qstr);
                $qstr = preg_replace('/paged\/\d{0,}/', '', $qstr);
                $qstr = preg_replace('/\/$/', '', $qstr);
            }
        }
        $nextpage = intval($paged) - 1;
        if ($nextpage < 1) $nextpage = 1;
        echo  $siteurl.'/'.$pagenow.$querystring_start.
            ($qstr == '' ? '' : $qstr.$querystring_separator) .
            'paged'.$querystring_equal.$nextpage;
    }
}

function previous_posts_link($label='&laquo; Previous Page') {
    global $p, $paged, $what_to_show;
    if (empty($p)  && ($paged > 1) && ($what_to_show == 'paged')) {
        echo '<a href="';
        previous_posts();
        echo '">'. preg_replace('/&([^#])(?![a-z]{1,8};)/', '&#038;$1', $label) .'</a>';
    }
}

function posts_nav_link($sep=' :: ', $prelabel='<< Previous Page', $nxtlabel='Next Page >>') {
    global $p, $what_to_show, $request, $posts_per_page, $wpdb;
    if (empty($p) && ($what_to_show == 'paged')) {
        $nxt_request = $request;
        if ($pos = strpos(strtoupper($request), 'LIMIT')) {
            $nxt_request = substr($request, 0, $pos);
        }
        $nxt_result = $wpdb->query($nxt_request);
        $numposts = $wpdb->num_rows;
        $max_page = ceil($numposts / $posts_per_page);
        if ($max_page > 1) {
            previous_posts_link($prelabel);
            echo preg_replace('/&([^#])(?![a-z]{1,8};)/', '&#038;$1', $sep);
            next_posts_link($nxtlabel, $max_page);
        }
    }
}

?>