PHP Svg Helper Class

Icon.php

<?php

namespace Icon;

/**
 * Simple helper class that outputs  
 * svg icons as text
 */
class Icon
{
	/**
	 * Path where the icons are stored
	 * @var string
	 */
	private $directory = '';
	const FILE_EXTENSION = '.svg';

	/**
	 * @param string $directory 
	 */
	public function __construct(string $directory = '')
	{
		$this->directory = $directory;
	}
	
	/**
	 * Returns the contents of the svg file
	 * @param  string $file 
	 * @return string       
	 */
	public function render(string $file)
	{
		return file_get_contents($this->directory . $file . self::FILE_EXTENSION);
	}
}

/* demo usage */
$icon = new Icon(__DIR__.'/icons/');

echo $icon->render('cat');