将函数添加到PHP file_get_contents路径

Question

I have this snippet of code which grabs the source of an SVG image and adds it to the HTML:

<?php echo file_get_contents("assets/images/lightening.svg"); ?>

I want to add a function root(); (that I already have working) which to the beginning path which tells it where the root of the site it (I'm hoisting the site in multiple locations).

What I want is a version of this that works:

<?php echo file_get_contents("'root();'.assets/images/lightening.svg"); ?>

Any help would greatly be appreciated. Thanks.

Answer 1

Dependent on whether the function root() returns the path without trailing slath:

<?php echo file_get_contents(root() . "/assets/images/lightening.svg"); ?>

or with trailing slash:

<?php echo file_get_contents(root() . "assets/images/lightening.svg"); ?>