<?php

namespace PhpZip\Util;

/**
 * String Util
 */
class StringUtil
{

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

    /**
     * @param string $haystack
     * @param string $needle
     * @return bool
     */
    public static function endsWith($haystack, $needle)
    {
        return $needle === "" || (($temp = strlen($haystack) - strlen($needle)) >= 0
                && strpos($haystack, $needle, $temp) !== false);
    }
}