PHP一些代码收藏：验证身份号、根据身份证号获取星座和生肖等

<?php
// PHP根据身份证号，自动获取对应的星座函数
function get_xingzuo($cid) { // 根据身份证号，自动返回对应的星座
	if (!isIdCard($cid)) return '';
	$bir = substr($cid,10,4);
	$month = (int)substr($bir,0,2);
	$day = (int)substr($bir,2);
	$strValue = '';
	if (($month == 1 && $day >= 20) || ($month == 2 && $day <= 18)) {
		$strValue = "水瓶座";
	} else if (($month == 2 && $day >= 19) || ($month == 3 && $day <= 20)) {
		$strValue = "双鱼座";
	} else if (($month == 3 && $day > 20) || ($month == 4 && $day <= 19)) {
		$strValue = "白羊座";
	} else if (($month == 4 && $day >= 20) || ($month == 5 && $day <= 20)) {
		$strValue = "金牛座";
	} else if (($month == 5 && $day >= 21) || ($month == 6 && $day <= 21)) {
		$strValue = "双子座";
	} else if (($month == 6 && $day > 21) || ($month == 7 && $day <= 22)) {
		$strValue = "巨蟹座";
	} else if (($month == 7 && $day > 22) || ($month == 8 && $day <= 22)) {
		$strValue = "狮子座";
	} else if (($month == 8 && $day >= 23) || ($month == 9 && $day <= 22)) {
		$strValue = "处女座";
	} else if (($month == 9 && $day >= 23) || ($month == 10 && $day <= 23)) {
		$strValue = "天秤座";
	} else if (($month == 10 && $day > 23) || ($month == 11 && $day <= 22)) {
		$strValue = "天蝎座";
	} else if (($month == 11 && $day > 22) || ($month == 12 && $day <= 21)) {
		$strValue = "射手座";
	} else if (($month == 12 && $day > 21) || ($month == 1 && $day <= 19)) {
		$strValue = "魔羯座";
	}
	return $strValue;
	
}
function get_shengxiao($cid) { //根据身份证号，自动返回对应的生肖
	if (!isIdCard($cid)) return '';
	$start = 1901;
	$end = $end = (int)substr($cid,6,4);
	$x = ($start - $end) % 12;
	$value = "";		
	if ($x == 1 || $x == -11) {$value = "鼠";}
	if ($x == 0) { $value = "牛";}
	if ($x == 11 || $x == -1) {$value = "虎";}
	if ($x == 10 || $x == -2) {$value = "兔";}
	if ($x == 9 || $x == -3) {$value = "龙";}
	if ($x == 8 || $x == -4) {$value = "蛇";}
	if ($x == 7 || $x == -5) {$value = "马";}
	if ($x == 6 || $x == -6) {$value = "羊";}
	if ($x == 5 || $x == -7) {$value = "猴";}
	if ($x == 4 || $x == -8) {$value = "鸡";}
	if ($x == 3 || $x == -9) {$value = "狗";}
	if ($x == 2 || $x == -10) {$value = "猪";}
	return $value;
}
function get_xingbie($cid) { //根据身份证号，自动返回性别
	if (!isIdCard($cid)) return '';
	$sexint = (int)substr($cid,16,1);
	
	return $sexint % 2 === 0 ? '女' : '男';
}
function isIdCard($number) { // 检查是否是身份证号
	// 转化为大写，如出现x
	$number = strtoupper($number);
	//加权因子 
	$wi = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
	//校验码串 
	$ai = array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
	//按顺序循环处理前17位 
	$sigma = 0;
	for ($i = 0;$i < 17;$i++) { 
		//提取前17位的其中一位，并将变量类型转为实数 
		$b = (int) $number{$i}; 
 
		//提取相应的加权因子 
		$w = $wi[$i];
 
		//把从身份证号码中提取的一位数字和加权因子相乘，并累加
		$sigma += $b * $w; 
	}
	//计算序号 
	$snumber = $sigma % 11; 
 
	//按照序号从校验码串中提取相应的字符。 
	$check_number = $ai[$snumber];
 
	if ($number{17} == $check_number) {
		return true;
	} else {
		return false;
	}
}
?>