[Resolved] Insert element in to blog posts

[Dana]

Is it possible to use a hook element to auto insert something in to blog posts after x number of paragraphs?
Thanks!

[David]

Hi there,

you can’t hook the content but you can filter the_content – try this PHP snippet it adds a block of HTML after the second paragraph to all posts.

add_filter( 'the_content', 'insert_content_after_p', 20 );
function insert_content_after_p( $content ) {
    ob_start();
    ?>
    <div>HTML goes here...</div>
    <?php
    $after_p_content = ob_get_clean();
    if ( is_single() && ! is_admin() ) {
        return prefix_insert_after_paragraph( $after_p_content, 2, $content );
    }
    return $content;
}
// Parent Function that makes the magic happen
function prefix_insert_after_paragraph( $insertion, $paragraph_id, $content ) {
    $closing_p = '</p>';
    $paragraphs = explode( $closing_p, $content );
    foreach ($paragraphs as $index => $paragraph) {
        if ( trim( $paragraph ) ) {
            $paragraphs[$index] .= $closing_p;
        }
        if ( $paragraph_id == $index + 1 ) {
            $paragraphs[$index] .= $insertion;
        }
    }
    return implode( '', $paragraphs );
}

[Dana]

Hi David, Sorry life got busy! Where would I add this to make it work please?

[David]

It just takes over sometimes 🙂
Its PHP – this article covers the options:

https://docs.generatepress.com/article/adding-php/

[Dana]

Yay! I used the code snippet plugin (because the functions.php on my child theme wouldn’t save properly) and it worked perfectly!
Thank you

[David]

Glad to be of help

[IBNU AHMAD]

Hi David,

The solutions works!

But it can only be used once.

I tried creating new snippet, but gotten this error:

The snippet has been deactivated due to an error on line 3:
Cannot redeclare function insert_content_after_p.

Anything I should do differently?

[David]

Hi there,

thats correct you can only register a function once.
If you want to add more inserts then only duplicate this part of the code:

add_filter( 'the_content', 'insert_content_after_p', 20 );
function insert_content_after_p( $content ) {
    ob_start();
    ?>
    <div>HTML goes here...</div>
    <?php
    $after_p_content = ob_get_clean();
    if ( is_single() && ! is_admin() ) {
        return prefix_insert_after_paragraph( $after_p_content, 2, $content );
    }
    return $content;
}

In this code you will see 2 instances of:

insert_content_after_p

In your duplicate function you will need to change them both to something else eg. insert_content_after_p_number_two

[Author]

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