php 常用自定义函数

 1 /**
 2  * 银行卡号格式检测
 3  */
 4 function chkCard($card)
 5 {
 6     if(empty($card)) return false;
 7 
 8     $cardNo = RSADecode($card);
 9 
10     //Luhn 算法
11     $cardNo .= ‘‘;
12     $len = strlen($cardNo);
13     if($len != 16 && $len != 19)
14         return false;
15 
16     if(!is_numeric($cardNo))
17         return false;
18 
19     $a1 = 0; //偶数和
20     $a2 = 0; //奇数和
21     if($len == 19) { //19位卡
22         for($i = $len - 2; $i >= 0; $i--) {
23             if($i%2 != 0) {
24                 $t = $cardNo[$i] * 2;
25                 $t .= ‘‘;
26                 $a1 += $t[0];
27                 if(isset($t[1])) {
28                     $a1 += $t[1];
29                 }
30             } else {
31                 $a2 += $cardNo[$i];
32             }
33         }
34     } 
35     if($len == 16) { //16位信用卡
36         for($i = $len - 2; $i >= 0; $i--) {
37             if($i%2 == 0) {
38                 $t = $cardNo[$i] * 2;
39                 $t .= ‘‘;
40                 $a1 += $t[0];
41                 if(isset($t[1])) {
42                     $a1 += $t[1];
43                 }
44             } else {
45                 $a2 += $cardNo[$i];
46             }
47         }
48     }
49 
50     $mod = ($a2 + $a1) % 10; 
51     $last = $mod;
52     if($mod > 0)
53         $last = 10 - $mod;
54 
55     if($last != $cardNo[$len - 1])
56         return false;
57 
58     return true;
59 }

1 function chkChinese($name)
2 {
3     //$pattern = ‘/^[\u4E00-\u9FFF]+$/‘;
4     if(preg_match("/^[\x{4e00}-\x{9fa5}]+$/u", $name)) 
5         return true;
6     return false;
7 }

 1 /**
 2  *根据身份证号计算性别 
 3  **/
 4 function getGender($idNo)
 5 {
 6     //15位数的身份证最后一位是双数就是女的，单数就是男的
 7     //18位数的身份证倒数第二位（第17位）是双数就是女的，单数就是男的
 8     $len = strlen($idNo);
 9     $gender = ‘先生‘;
10 
11     $last = $len == 15 ? substr($idNo, 0, -1) : ($len == 18 ? substr($idNo, -2, 1) : 1);
12     if($last % 2 == 0)
13         $gender = ‘女士‘;
14     return $gender;
15 }

 1 /**
 2  * 生成指定长度的随机字符串
 3  */
 4 function getRandChar($amount)
 5 {
 6     $str = ‘23456789abcdefghijkmnpqrstuvwxyzABCDEFGHJKMNPQRSTUVWXYZ‘;
 7     $len = strlen($str);
 8     $charStr = ‘‘;
 9     for($i = 0; $i < $amount; $i++) {
10         $rnd = rand(0, $len - 1);
11         $charStr .= $str[$rnd];
12     }
13 
14     return $charStr;
15 }

 1 /**
 2  * RSA解密
 3  */
 4 function RSADecode($argEncoded)
 5 {
 6     $source = base64_decode($argEncoded);
 7     //rsa 配置加载
 8     $rsa = configParam(‘RSA‘);
 9     $res = openssl_pkey_get_private($rsa[‘privateKey‘], $rsa[‘passPhrase‘]);
10     openssl_private_decrypt($source,$newSource,$res);
11 
12     return $newSource;
13 
14 }

 1 /**
 2  * RSA 加密
 3  */
 4 function rsaEncode($mob)
 5 {
 6     $pub = ‘-----BEGIN PUBLIC KEY-----
 7  B
 8 -----END PUBLIC KEY-----‘;
 9 
10     $res = openssl_pkey_get_public($pub);
11     openssl_public_encrypt($mob, $newStr, $res);
12     $en = base64_encode($newStr);
13 
14     return $en;
15 }