Question 165408 in Wordpress Question posted in
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Can WordPress separate categories with a comma?

Very new to WordPress and web design. I have this function for separating categories with a comma ",". But it also adds the comma after the last category. Making it look like this:

Category1, Category2, Category3,

When I want it like this:

Category1, Category2, Category3

Without the last comma behind Category3

How can I stop the function from adding the last comma?

<?php
    $category_detail = get_the_category($post->ID); //$post->ID
    foreach ($category_detail as $cd) {
        echo $cd->cat_name . ', ';
    }
    ?>

Regards

Tags:

3

Answers


  1. 0

    There is many approaches to splitting arrays values.

    Indeed you could achieve it via a foreach loop, by counting iterations.

    $category = get_the_category($post->ID);
$i = 0;
foreach ($categories as $category) {
  $i++;
  echo $category->cat_name;
  if ($i < count($items))
    echo ', ';
};

    Tho a more concise approach would be using the implode() native function:

    $categories = get_the_category($post->ID);
echo implode(', ', $categories);
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  2. 0

    With this foreach loop you are actually converting an array into string. Thus, if it is more understandable to use, you could just erase the last char like this:

    <?php
    $str=''; //single quotes
    $category_detail = get_the_category($post->ID); //$post->ID
    foreach ($category_detail as $cd) {
        $str .= $cd->cat_name . ', ';
    }
echo substr($str, 0, -1);
    ?>
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  3. 0

    I was being lazy, and searching Google for this, but none of these were quite what I was searching for. I wrote this and will leave it here for anyone else on a similar search.

    Add this to your functions.php:

    function comma_separated_blog_categories( $id, $class = '' )
{
    // Get the category object
    $categories = get_the_category( $id );
    // Bail if nothing is found
    if ( is_null( $categories ) )
    {
        return;
    }
    // Create an empty array for the output
    $output = array();
    // Loop over the categories
    foreach ( $categories as $category )
    {
        // Category is an object, so grab the name and the id
        $name     = $category->name;
        $url      = get_category_link( $category->ID );
        // Create the output and include our data
        $output[] = '<a href="' . $url . '" class="' . $class . '">' . $name . '</a>';
    }
    // Finally implode the output to apply the comma if it's required...
    return implode( ',', $output );
}

    Then in your templates, echo the function and pass in the post_id and a *class (optional)

    <?php echo comma_separated_blog_categories(get_the_ID(), 'category-item'); ?>
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