Showing image in WordPress works for both SVG & non SVG image

show-image.php

<?php
/*** Function to show images whether SVG or non SVG ***/
/*** $size & $attribute both can hold array if you want ***/
function show_image( $image_id, $size = null, $attributes = null ) {
	//first lets get the file info sto understand what kind of file it is
	//as for svg file we will take different approach
	$file_info = pathinfo( wp_get_attachment_url( $image_id ) );

	//so, if the file type is SVG
	if ( $file_info['extension'] === 'svg' ) {
		return file_get_contents( wp_get_attachment_url( $image_id ) );
	} else {
		//for any other type of images i.e. JPG, PNG, GIF
		//we can just simply use the wp_get_attachment_image() stock function
		return wp_get_attachment_image( $image_id, $size, false, $attributes );
	}
}