php简单分页类|page.class.php-PHP源码

php简单分页类|page.class.php-PHP源码

 2)
        {
            $url = self::url(1);
            return "
首页
";
        }
    }
 
    public static function previous()
    {
        if (self::$page > 1)
        {
            $url = self::url(self::$page - 1);
            return "
上一页
";
        }
    }
 
    public static function number()
    {
        $str = '';
        $f = self::$number % 2 ? (self::$number - 1) / 2 : self::$number / 2;
        $s = self::$page - $f;
        $e = self::$page + $f;
 
        if (self::$page < ($f + 1))
        {
            $s = 1;
            $e = self::$number;
            $e = $e > self::$max ? self::$max : $e;
        }
 
        if (self::$page > (self::$max - $f))
        {
            $s = self::$max - self::$number;
            $s = $s < 1 ? 1 : $s;
            $e = self::$max;
        }
 
        for ($i=$s; $i<=$e; $i++)
        {
            $url = self::url($i);
            if ($i == self::$page)
                $str .= "
{$i}
";
            else
                $str .= "
{$i}
";
        }
        return $str;
    }
 
    public static function next()
    {
        if (self::$page < self::$max)
        {
            $url = self::url(self::$page + 1);
            return "
下一页
";
        }
    }
 
    public static function end()
    {
        if ((self::$max - self::$page) > 1)
        {
            $url = self::url(self::$max);
            return "
末页
";
        }
    }
 
    public static function url($page)
    {
        return str_replace('{page}', $page, self::$url);
    }
}