bragento/bragento-composer-installer

<?php
/**
 * String.php
 *
 * PHP Version 5
 *
 * @category  Bragento_MagentoComposerInstaller
 * @package   Bragento\Magento\Composer\Installer\Util
 * @author    David Verholen <david.verholen@brandung.de>
 * @copyright 2014 Brandung GmbH & Co. KG
 * @license   http://opensource.org/licenses/OSL-3.0 OSL-3.0
 * @link      http://www.brandung.de
 */

namespace Bragento\Magento\Composer\Installer\Util;

/**
 * Class String
 *
 * @category  Bragento_MagentoComposerInstaller
 * @package   Bragento\Magento\Composer\Installer\Util
 * @author    David Verholen <david.verholen@brandung.de>
 * @copyright 2014 Brandung GmbH & Co. KG
 * @license   http://opensource.org/licenses/OSL-3.0 OSL-3.0
 * @link      http://www.brandung.de
 */
class StringUtil
{
    /**
     * startsWith
     *
     * @param string $haystack
     * @param string $needle
     *
     * @return bool
     */
    public static function startsWith($haystack, $needle)
    {
        return $needle === "" || strpos($haystack, $needle) === 0;
    }

    /**
     * endsWith
     *
     * @param string $haystack
     * @param string $needle
     *
     * @return bool
     */
    public static function endsWith($haystack, $needle)
    {
        return $needle === ""
        || substr($haystack, -strlen($needle)) === $needle;
    }

    /**
     * @param $haystack
     * @param $needle
     *
     * @return bool
     */
    public static function contains($haystack, $needle)
    {
        return strpos($haystack, $needle) !== false;
    }
}