Shortcode to output an ACF field with user defined truncation length #acf

Register-truncated-ACF-shortcode.php

<?php //ignore this line - only for formatting

add_shortcode("truncated_acf_field", "truncated_acf_field_shortcode");

function truncated_acf_field_shortcode($atts)
{
    if (function_exists("get_field")) {
        $atts = shortcode_atts(
            [
                "length" => 100, // Set the default to 100 characters if user doesn't define their own in the shortcode
                "name" => "",
                "ellipsis" => "true", // Defaults to true if user leaves this out of the shortcode
            ],
            $atts
        );

        if (empty($atts["name"])) {
            return "Please add an ACF field name to the shortcode";
        }

        $field_value = get_field($atts["name"]);

        // Truncate the description to the defined number of characters and trim white space at the end
        $truncated_field_value = mb_substr($field_value, 0, $atts["length"]);
        $truncated_field_value = rtrim($truncated_field_value);

        // Add the ellipsis if the attribute is true and the original value is longer than the defined length
        if (
            $atts["ellipsis"] === "true" &&
            mb_strlen($field_value) > $atts["length"]
        ) {
            $truncated_field_value .= "...";
        }

        return $truncated_field_value;
    } else {
        return "<p>Please activate the Advanced Custom Fields plugin</p>";
    }
}

// And your shortcode will look like [truncated_acf_field name="field_name" length="150"]