truncate a RSS-feed with PHP string functions like substr

[Maze]

this is a RSS-question: Im pulling an RSS feed from a site to display on my homepage. It displays the titles correctly, but I want
to truncate the number of characters per post so it doenst take up a long section if the title is long. How do I do that? here is the code Im using

<?php // Get RSS Feed(s)
include_once(ABSPATH . WPINC . '/feed.php');

$rss = fetch_feed('http://examplesite.com/rss');
if (!is_wp_error( $rss ) ) :

    $maxitems = $rss->get_item_quantity(5);

    $rss_items = $rss->get_items(0, $maxitems);
endif;
?>

<ul>
    <?php if ($maxitems == 0) echo '<li>No items.</li>';
    else

    foreach ( $rss_items as $item ) : ?>
    <li>
        <a href='<?php echo $item->get_permalink(); ?>'
        title='<?php echo 'Posted '.$item->get_date('j F Y | g:i a'); ?>'>
        <?php echo $item->get_title(); ?></a>
    </li>
    <?php endforeach; ?>
</ul>

well I am trying to limit the number of words displayed in the excerpt Basicly, the problem is that I want to use the
same excerpt in two different loops. The first one will display the whole excerpt, the second loop will only display a smaller
part of it. Therefore I cannot limit the words number of ALL the excerpts, but I would need to do that locally.
Ideally, if there is a solution to this I can use the same excerpts in many different places on
the blog, using the same excerpt but in its longer/shorter version depending on the situation.


 

<?php $little_excerpt = substr(the_excerpt(),0,XY); ?>

doesn’t work because the_excerpt() is not at string.

well we can Use get_the_excerpt() instead, that will do the trick. However, this is still limiting characters, not words.


I just found a solution to limiting the number of words in the excerpt without plugins. Put the following piece of code in your templates functions.php file:

<?php
function string_limit_words($string, $word_limit)
{
  $words = explode(' ', $string, ($word_limit + 1));
  if(count($words) > $word_limit)
  array_pop($words);
  return implode(' ', $words);
}
?>

Next, put the following piece of code in your template where you want to display the excerpt:
 

<?php
  $excerpt = get_the_excerpt();
  echo string_limit_words($excerpt,25);
?>

Where 25 is the number of words to display.
php




    
we can use PHP string functions like substr to return a number of characters rather than word count.

The post content aaaaaaaaaaaaaaa aaaaaaaaaaaaa will be much longer than a a.
 

$max_length = 150;

echo substr( $string, 0, $max_length );

As a function it might look like:
 

function string_limit_words( $string = '', $count = 25, $after = '...' ) {
    if ( strlen( $string ) <= $count ) {
        return $string;
    }

    return substr( $string, 0, $count ) . $after;
}

echo string_limit_words( "This is a lot of words", 10 );

// This is a ...

the_excerpt() prints the output while get_the_excerpt() will return the string to allow manipulation before output.

 

what do you say?

 

look forward to hear from you
 

[Psycho]

I'm not going to read through your entire post. But, based on what I understand, I would create a function to output the limited string. Then when you need to output the title either use the title directly (if you want to use the whole thing), or use a function to limit the output accordingly. I have an old function for just this purpose.

 

e.g.

//Return a string up to a certain number of characters
//but will break on a space
function truncateString($string, $length, $ellipse='…')
{
    //Return truncated string w/ ellipse (if >$length)
    return substr($string, 0, stripos($string, ' ', $length)) . $ellipse;
}
 
$string = "This is a string with a lot of words that may need to be limited in some places in the output";
 
echo "<b>Output the full string:</b><br>\n";
echo $string . "<br><br>\n";
echo "<b>Output the limited string:</b><br>";
echo truncateString($string, 25);

Output:

 

 

Output the full string:

This is a string with a lot of words that may need to be limited in some places in the output

Output the limited string:

This is a string with a lot…

Edited November 13, 2016 by Psycho

[Maze]

hello dear Psycho, many many thanks for the quick reply.

 

great to hear form you!

 

fantastic to read your ideas - that sound great.

 

 

i will add your lines accordingly ... .to the part that fetches the RSS

<?php // Get RSS Feed(s)
include_once(ABSPATH . WPINC . '/feed.php');

$rss = fetch_feed('http://examplesite.com/rss');
if (!is_wp_error( $rss ) ) :

    $maxitems = $rss->get_item_quantity(5);

    $rss_items = $rss->get_items(0, $maxitems);
endif;
?>

<ul>
    <?php if ($maxitems == 0) echo '<li>No items.</li>';
    else

and then your lines come....:

 

.

//Return a string up to a certain number of characters
//but will break on a space
function truncateString($string, $length, $ellipse='…')
{
    //Return truncated string w/ ellipse (if >$length)
    return substr($string, 0, stripos($string, ' ', $length)) . $ellipse;
}
 
$string = "This is a string with a lot of words that may need to be limited in some places in the output";
 
echo "<b>Output the full string:</b><br>\n";
echo $string . "<br><br>\n";
echo "<b>Output the limited string:</b><br>";
echo truncateString($string, 25);

Output:

 

 

 

many many thanks for the hints.

 

regards

maze