Limit the_field output to x chars

• rhand

• February 24, 2019 at 2:05 pm

I currently have the following code to load an intro paragraph ACF field and if empty to load the excerpt:

<?php 
if( get_field('intro_paragraph') ) {
   the_field('intro_paragraph');
} else {
  the_excerpt(); 
}?>

This as some older posts do not have the ACF Intro field populated. The excerpt it limited to 30 chars:

function custom_excerpt_length( $length ) {
    return 30;
}
add_filter( 'excerpt_length', __NAMESPACE__ . '\\custom_excerpt_length', 999);

How can limit the output of a field to x amount of characters?