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PHP function to verify whether the ID card is legal

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Release： 2016-07-25 08:42:28
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Is it legal, PHP
  1. /**
  2. * ID card
  3. *
  4. * @param string $id
  5. * @return boolean
  6. */
  7. function is_idcard( $id )
  8. {
  9. $id = strtoupper($id);
  10. $regx = "/(^d{15}$)|(^d{ 17}([0-9]|X)$)/";
  11. $arr_split = array();
  12. if(!preg_match($regx, $id))
  13. {
  14. return FALSE;
  15. }
  16. if(15= =strlen($id)) //Check 15 digits
  17. {
  18. $regx = "/^(d{6})+(d{2})+(d{2})+(d{2})+( d{3})$/";
  20. @preg_match($regx, $id, $arr_split);
  21. //Check whether the birthday date is correct
  22. $dtm_birth = "19".$arr_split[2] . '/' . $arr_split[3]. '/' .$arr_split[4];
  23. if(!strtotime($dtm_birth))
  24. {
  25. return FALSE;
  26. } else {
  27. return TRUE;
  28. }
  29. }
  30. else //Check 18 Bit
  31. {
  32. $regx = "/^(d{6})+(d{4})+(d{2})+(d{2})+(d{3})([0-9] | ;
  33. if(!strtotime($dtm_birth)) //Check whether the birthday date is correct
  34. {
  35. return FALSE;
  36. }
  37. else
  38. {
  39. //Check whether the check code of the 18-digit ID card is correct.
  40. //The check digit is generated in accordance with ISO 7064:1983.MOD 11-2. X can be considered as the number 10.
  41. $arr_int = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
  42. $arr_ch = array('1' , '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
  43. $sign = 0;
  44. for ( $i = 0; $i < 17; $i++ )
  45. {
  46. $b = (int) $id{$i};
  47. $w = $arr_int[$i];
  48. $sign += $b * $w;
  49. }
  50. $n = $sign % 11;
  51. $val_num = $arr_ch[$n];
  52. if ($val_num != substr($id,17, 1))
  53. {
  54. return FALSE;
  55. }
  56. else
  57. {
  58. return TRUE;
  59. }
  60. }
  61. }
  63. }
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验证身份证是否合法的PHP函数
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