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PHP验证生日

May 25, 2016 pm 05:06 PM

php代码

<?php
function pc_checkbirthdate($month, $day, $year) {
    $min_age = 18; // 过18岁
    $max_age = 100; // 超过122岁
                    
    // 验证是不是合法时间,不会出现2月30号类似错误
    if (! checkdate ( $month, $day, $year )) {
        return false;
    }
    
    // 取得当前 年 月 日
    list ( $this_year, $this_month, $this_day ) = explode ( &#39;,&#39;, date ( &#39;Y, m, d&#39; ) );
    $min_year = $this_year - $max_age;
    $max_year = $this_year - $min_age;
    
    print "合法时间应该大于:$min_year,$this_month,$this_day\n<br/>";
    print "合法时间应该小于:$max_year,$this_month,$this_day\n<br/>";
    print "您输入的时间是:$year,$month,$day\n<br/>";
    
    if (($year > $min_year) && ($year < $max_year)) { // 先判断年,如果在(最小年,最大年)之间,返回true
        return true;
    } elseif (($year == $max_year) && (($month < $this_month) || (($month == $this_month && ($day < $this_day))))) {//年相等的在判断月,月相等在判断日
        return true;
    } elseif (($year == $min_year) && (($month > $this_month) || (($month == $this_month && ($day > $this_day))))) {
        return true;
    } else {
        return false;
    }
}

if (pc_checkbirthdate ( 4, 29, 1995 )) {
    print "You may use this web site.";
} else {
    print "please input the correct birthdate.";
    exit ();
}
?>
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