php身份证验证

以前我要验证身份证我们多半会使用正则判断用户输入是不是15位或18位的全数字,然后来判断身份证是否合法了,这种方法只是最基础的,下面提供的这个身份证验证,可以识别真假身份证.

代码如下:

<?php
$IDCard = new IDCard();
var_dump($IDCard::isCard($_GET[&#39;card&#39;]));
/**  
 * 身份证处理类
 */
class IDCard {
    //检证身份证是否正确
    public static function isCard($card) {
        $card = self::to18Card($card);
        if (strlen($card) != 18) {
            return false;
        }
        $cardBase = substr($card, 0, 17);
        return (self::getVerifyNum($cardBase) == strtoupper(substr($card, 17, 1)));
    }
    //格式化15位身份证号码为18位
    public static function to18Card($card) {
        $card = trim($card);
        if (strlen($card) == 18) {
            return $card;
        }
        if (strlen($card) != 15) {
            return false;
        }
        // 如果身份证顺序码是996 997 998 999，这些是为百岁以上老人的特殊编码
        if (array_search(substr($card, 12, 3) , array(
            &#39;996&#39;,
            &#39;997&#39;,
            &#39;998&#39;,
            &#39;999&#39;
        )) !== false) {
            $card = substr($card, 0, 6) . &#39;18&#39; . substr($card, 6, 9);
        } else {
            $card = substr($card, 0, 6) . &#39;19&#39; . substr($card, 6, 9);
        }
        $card = $card . self::getVerifyNum($card);
        return $card;
    }
    // 计算身份证校验码，根据国家标准gb 11643-1999
    private static function getVerifyNum($cardBase) {
        if (strlen($cardBase) != 17) {
            return false;
        }
        // 加权因子  
$factor = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);  
   
// 校验码对应值  
$verify_number_list = array(&#39;1&#39;, &#39;0&#39;, &#39;X&#39;, &#39;9&#39;, &#39;8&#39;, &#39;7&#39;, &#39;6&#39;, &#39;5&#39;, &#39;4&#39;, &#39;3&#39;, &#39;2&#39;);  
        $checksum = 0;
        for ($i = 0; $i < strlen($cardBase); $i++) {
            $checksum+= substr($cardBase, $i, 1) * $factor[$i];
        }
        $mod = $checksum % 11;
        $verify_number = $verify_number_list[$mod];
        return $verify_number;
    }
}

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随意转载^^但请附上教程地址。