Inject <script> added to custom field to header and footer

functions.php

<?php
/**
 * Add script code to page's header
 */
function bc_add_page_script_code_header() {
  $script_raw = get_field( 'script_code', get_the_ID(), false );
  $script_location = get_field( 'script_location', get_the_ID() );

  if ( !is_admin() && $script_raw && $script_location == 'header' ) {
    $script_decoded = htmlspecialchars_decode( $script_raw );
    echo $script_decoded;
  }
}
add_action( 'wp_head', 'bc_add_page_script_code_header' );


/**
 * Add script code to page's footer
 */
function bc_add_page_script_code_footer() {
  $script_raw = get_field( 'script_code', get_the_ID(), false );
  $script_location = get_field( 'script_location', get_the_ID() );

  if ( !is_admin() && $script_raw && $script_location == 'footer' ) {
    $script_decoded = htmlspecialchars_decode( $script_raw );
    echo $script_decoded;
  }
}
add_action( 'wp_footer', 'bc_add_page_script_code_footer' );