Using Advanced Custom Fields to create Post Title & Slug for different CPTs

acf-cpt-custom-post-title-slug.php

<?php
// Auto fill Title and Slug for 'companies' CPT
function acf_title_companies( $value, $post_id, $field ) {

	if ( get_post_type( $post_id ) == 'companies' ) {

		$new_title = get_field( 'company_name', $post_id ) . ' ' . $value;
		$new_slug = sanitize_title( $new_title );

		wp_update_post( array(
			'ID'         => $post_id,
			'post_title' => $new_title,
			'post_name'  => $new_slug,
			)
		);
	}

	return $value;
} 
add_filter( 'acf/update_value/name=company_name', 'acf_title_companies', 10, 3 );

// Auto fill Title and Slug for 'contacts' CPT
function acf_title_contacts( $value, $post_id, $field ) {

	if ( get_post_type( $post_id ) == 'contacts') {

		$new_title = get_field( 'name_first', $post_id ) . ' ' . $value;
		$new_slug = sanitize_title( $new_title );

		wp_update_post( array(
			'ID'         => $post_id,
			'post_title' => $new_title,
			'post_name'  => $new_slug,
			)
		);
	}

	return $value;
} 
add_filter( 'acf/update_value/name=name_first', 'acf_title_contacts', 10, 3 );

// Auto fill Title and Slug for 'properties' CPT
function acf_title_properties( $value, $post_id, $field ) {

	if ( get_post_type( $post_id ) == 'properties') {

		$new_title = get_field( 'building_name', $post_id ) . ' ' . $value;
		$new_slug = sanitize_title( $new_title );

		wp_update_post( array(
			'ID'         => $post_id,
			'post_title' => $new_title,
			'post_name'  => $new_slug,
			)
		);
	}

	return $value;
} 
add_filter( 'acf/update_value/name=building_name', 'acf_title_properties', 10, 3 );