/**
 * Truncates $str and returns IT with $ending on the end,if $str is longer
 * than $limit characters
 *
 * @param string $str
 * @param int $length
 * @param string $ending
 * @return string
 */
function truncate_string($str,$length,$ending = "...")
{
    if (strlen($str) <= $length)
    {
        return $str;
    }
    return substr($str,$length - strlen($ending)).$ending;
}

因此,如果限制是40并且字符串是“快速狐狸跳过懒惰的棕色狗”,输出将是“快速狐狸跳过懒惰的眉毛……”.这似乎是PHP中存在的那种东西,所以当我找不到它时我感到很惊讶.