PHP Class for CLI Colors

cli_color.class.php

<?php
// Based upon http://goo.gl/406o
class CliColor
{
	private $colors = array();
	private $bgcolors = array();

	public function __construct()
	{
		// Set up shell colors
		$this->colors['black'] = '0;30';
		$this->colors['dark_gray'] = '1;30';
		$this->colors['blue'] = '0;34';
		$this->colors['light_blue'] = '1;34';
		$this->colors['green'] = '0;32';
		$this->colors['light_green'] = '1;32';
		$this->colors['cyan'] = '0;36';
		$this->colors['light_cyan'] = '1;36';
		$this->colors['red'] = '0;31';
		$this->colors['light_red'] = '1;31';
		$this->colors['purple'] = '0;35';
		$this->colors['light_purple'] = '1;35';
		$this->colors['brown'] = '0;33';
		$this->colors['yellow'] = '1;33';
		$this->colors['light_gray'] = '0;37';
		$this->colors['white'] = '1;37';

		$this->bgcolors['black'] = '40';
		$this->bgcolors['red'] = '41';
		$this->bgcolors['green'] = '42';
		$this->bgcolors['yellow'] = '43';
		$this->bgcolors['blue'] = '44';
		$this->bgcolors['magenta'] = '45';
		$this->bgcolors['cyan'] = '46';
		$this->bgcolors['light_gray'] = '47';
	}

	// Returns colored string
	public function getColoredString($string, $color = null, $bgcolor = null)
	{
		if (!self::isCli())
		{
			return $string;
		}

		$coloredString = "";

		// Check if given foreground color found
		if (isset($this->colors[$color]))
		{
			$coloredString .= "\033[" . $this->colors[$color] . "m";
		}
		// Check if given background color found
		if (isset($this->bgcolors[$bgcolor]))
		{
			$coloredString .= "\033[" . $this->bgcolors[$bgcolor] . "m";
		}

		// Add string and end coloring
		$coloredString .=  $string . "\033[0m";

		return $coloredString;
	}

	// Returns all foreground color names
	public function getForegroundColors()
	{
		return array_keys($this->colors);
	}

	// Returns all background color names
	public function getBackgroundColors()
	{
		return array_keys($this->bgcolors);
	}

	// Are we running on the command line?
	public static function isCli()
	{
		return (php_sapi_name() == 'cli' && empty($_SERVER['REMOTE_ADDR']));
	}
}
$c = new CliColor;
echo $c->getColoredString('Hello World', 'red', 'yellow');