Wordpress Content Limit
Better Wordpress Content Limit
I decided to update mu Wordpress themes Webbutveckling and Webbdesign which I hope I will release in next couple of days when problem concerning content limit in Wordpress occur to me. There is possibility to include more tag: <!–more–> in every post, but what if you have thousands of posts or later want to change place of more tags? You can use the the_excerpt but what if you don’t want to write excerpts?
I search web for solutions and find 3 plugins.
First one http://labitacora.net/comunBlog/limit-post.phps which is basically a function Limits the displayed text length (number of characters)on the index page entries and generates a link to a page to read the full content if it’s bigger than the selected maximum length. Everything fine except that function strips all html tags and put content between<p> and </p> tag. However it produces valid xhtml against The W3C Markup Validation Service.
Next one – Excerpt and Content Word Limit – limits the number of words from posts or excerpts. It even pulls out first image but with actual size and without wordpress align classes. Plugin also takes html tags and that’s its main downfall because it cuts code regardless if tag is open or closed. HTML output is full of errors and even whole layout could break.
Third – WP Limit Posts Automatically – first check if there is a <!–more–> tag and if is not limits post by number of letters, words or just take first paragraph by inserting <!–more–> tag on specified place. There is same problem as with the plugin above. Leaves unclosed html tags.
I obviously wasn’t satisfied so I write small piece of code which do the job: limits content after set number of words, add gettexted more link to the endof it , pull out only wordpress allowed html tags, check if any tag is unclosed and closing it. And here it is:
<?php
////////////////////////////////////////////////////////////////////////////////
// Find and close unclosed xhtml tags
function close_tags($text) {
$patt_open = "%((?<!</)(?<=<)[\s]*[^/!>\s]+(?=>|[\s]+[^>]*[^/]>)(?!/>))%";
$patt_close = "%((?<=</)([^>]+)(?=>))%";
if (preg_match_all($patt_open,$text,$matches))
{
$m_open = $matches[1];
if(!empty($m_open))
{
preg_match_all($patt_close,$text,$matches2);
$m_close = $matches2[1];
if (count($m_open) > count($m_close))
{
$m_open = array_reverse($m_open);
foreach ($m_close as $tag) $c_tags[$tag]++;
foreach ($m_open as $k => $tag) if ($c_tags[$tag]--<=0) $text.='</'.$tag.'>';
}
}
}
return $text;
}
////////////////////////////////////////////////////////////////////////////////
// Content Limit
function content($num, $more_link_text = '(more...)') {
$theContent = get_the_content($more_link_text);
$output = preg_replace('/<img[^>]+./','', $theContent);
$limit = $num+1;
$content = explode(' ', $output, $limit);
array_pop($content);
$content = implode(" ",$content);
$content = strip_tags($content, '<p><a><address><a><abbr><acronym><b><big><blockquote><br><caption><cite><class><code><col><del><dd><div><dl><dt><em><font><h1><h2><h3><h4><h5><h6><hr><i><img><ins><kbd><li><ol><p><pre><q><s><span><strike><strong><sub><sup><table><tbody><td><tfoot><tr><tt><ul><var>');
echo close_tags($content);
echo "<p><a href='";
the_permalink();
echo "'>".$more_link_text."</a></p>";
}?>
How does it works?
First function function close_tags($text) use php function preg_match_all to match all xml/html tags against a pattern, find unclosed ones and close them.
The other one function content($num, $more_link_text = ‘(more…)’) get the content with the wp build in function get_the_content(), strip images, strip html tags except allowed, then calls function close_tags to close them, get the permalink to post with wp the_permalink() and that’s it.
How to use this?
Copy the code above and paste it in your themes function.php file
In you theme within the loop find the following code
<?php the_content(); ?>
And replace it with
<?php content(100, __('(more...)')); ?>
Where ‘100′ is the number of words to limit content and ‘more…’ is link to full post. Change ‘100′ to whatever number and ‘more…’ to ‘Read more’ or whatever
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Hello there, I would like to know if you have the same function but with the following :
After a certain number of letters (including spaces) just add the ‘…’. Of course if the number of letters ends up in the middle of a word do include the entire word.
See what i mean ?
The reason i’m asking is because limiting by number of words is great but sometimes after a big paragraph it results in a different size.
I’m trying to limit my text to a defined size.
Thank you for posting this amazing code. I was previously using the first plug-in you listed, however your plug-in does an amazing job at keeping the existing formatting.
For those interested, I simply created a .php file in my Plug-ins folder in wordpress, copied and pasted the code listed above and made this piece of functionality a plug-in that can be enabled/disabled as needed.
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What I do not believe I see eye to eye with that at all really.
Hi, Why post image does not show when i add this code? Image show on readmore page. please help.
Hi,
That’s intended. This piece of code removes images
$output = preg_replace('/<img[^>]+./','', $theContent);I want the images to show up. But I cant just remove
$output = preg_replace(‘/]+./’,”, $theContent);
So how do I modify the code to include the images?
I have tried getting the image to show too. After exhaustive searches, there is a different approach…
Use the function, and edit the formatting.php file, as explained in another post,
http://chadcarr.com/blog/images-in-auto-excerpts-wordpress-cmsms/
Replace the $output = preg_replace(‘/]+./’,”, $theContent); with $output = $theContent;
Hope it will work…
what about if $num > $theContent? Still (readmore)…..
I like it
I currently use:
the_content(“read more about ” . get_the_title(”, ”, false));
I would like to keep this and use your function? Also I agree with some people above, how can I keep images?
Thanks, looks very promising.
I have been perusing a few of your posts and have enjoyed it. Keep it up
Hi there
Thanks for the plug in, it seems to work but i only want to display one post at the time.
if i use your function it overrides the setting in the options
Can you help?
Thanks
@gino
You have to make custom query in order to display one post at the time. Please check this http://codex.wordpress.org/Function_Reference/query_posts
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[...] A tutorial about limiting the content [...]
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