Include inline SVG files.

inline-svg.php

<?php

function pb_load_inline_svg( $filename ) {

    // Add the path to your SVG directory inside your theme.
    $svg_path = '/assets/svg/';
    $file_end = '.svg';

    //Check the SVG file exists
    if ( ! file_exists( CHILD_DIR . $svg_path . $filename . $file_end ) ) {

      // Return a blank string if we can't find the file.
      return '';

    }

    // Load and return the contents of the file
    return file_get_contents( CHILD_DIR . $svg_path . $filename . $file_end );

}