UrlAndAssetHelper.php

<?php

//As would be defined in bootstrap.php
defined('HOST_NAME') OR define('HOST_NAME', $SERVER['SERVER_NAME']);

if (!function_exists('asset')) {
	
	 /**
		* Generate an asset path
		*
		* @param string $path
		* @param bool $secure
		* @return string
		*/
		function asset($path, $isSecure = null)
		{
			if (urlValid($path)) {
				return $path;
			}
			//Get the http scheme
			$scheme = getScheme($isSecure);
			return $scheme . HOST_NAME . '/public/' . $path;
		}
}

if (!function_exists('url')) {
	
	 /**
* Generate an absolute URL to the given path.
*
* @param string $path
* @param bool|null $isSecure
* @return string
*/

function url($path, $isSecure = null)
{
	//First, let's see if the path is a  valid url, if it is, we just return it
	if (urlValid($path)) {
			return $path;
	}
	//Get the http scheme
	$scheme = getScheme($isSecure);
	//Check if this path has query params
	if (($pos = strpos($path, '?')) !== false) {
		//Path does have query params
		$query = substr($path, $pos);
		$path = substr($path, 0, $pos);
	} else {
		//Nope, no queries
		$query = '';
	}
	return $scheme . HOST_NAME . '/public/' . $path . $query;
}
	
}


/**
* Gets the http scheme of the url.
*
* @param bool|null $isSecure
* @return string
*/
function getScheme($isSecure = null)
{
		$scheme = '';
	 if (!is_null($isSecure) && $isSecure) {
		//It's secure, let's take their word for it
		$scheme = 'https://';
	} else {
		//Looks like we'll have to find ourselves
		 $scheme = isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] == 'on' || $_SERVER['HTTPS'] == 1) || isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https' ? 'https://' : 'http://';
	}
	return $scheme;
}


/**
* Checks if the given url is valid
*
* @param string $path
* @return bool
*/
function urlValid($path)
{
	 $isUrlValid = false;
	if (preg_match('/^(http:\/\/|https:\/\/|tel:|mailto:|#)/'), $path) {
	   $isUrlValid = true;
	}
	$isUrlValid = filter_var($path, FILTER_VALIDATE_URL) === true ? true : false;
	return $isUrlValid;
}