Function to replace SVG images to inline SVG code (WordPress)

wp-svg-inline.php

<?php
function wp_svg_inline_replacer($matches) {
  $src = $matches[1];
  $parts = explode('/wp-content/', $src);

  $svg = file_get_contents(WP_CONTENT_DIR . '/' . $parts[1]);
  $svg = preg_replace('/<\?xml.*\?>/', '', $svg);
  $svg = preg_replace('/<\!DOCTYPE[^>]*>/', '', $svg);

  return trim($svg);
}

function wp_svg_inline_filter($content) {
  global $post;
  $pattern = "/<img.*src=\"(.*\.svg)\"(.*) \/>/i";
  $content = preg_replace_callback($pattern, 'wp_svg_inline_replacer', $content);
  return $content;
 }

 add_filter('the_content','wp_svg_inline_filter');
 add_filter('get_custom_logo','wp_svg_inline_filter');