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PHP实现身份证验证函数

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Release: 2016-06-06 19:56:48
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欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入 PHP实现身份证验证函数 function validation_filter_id_card($id_card){ if(strlen($id_card) == 18) { return idcard_checksum18($id_card); }elseif((strlen($id_card) == 15)){ $i

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  PHP实现身份证验证函数

  function validation_filter_id_card($id_card){

  if(strlen($id_card) == 18) {

  return idcard_checksum18($id_card);

  }elseif((strlen($id_card) == 15)){

  $id_card = idcard_15to18($id_card);

  return idcard_checksum18($id_card);

  }else{

  return false;

  }

  }

  // 计算身份证校验码,根据国家标准GB 11643-1999

  function idcard_verify_number($idcard_base){

  if(strlen($idcard_base) != 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('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');

  $checksum = 0;

  for ($i = 0; $i

  $checksum += substr($idcard_base, $i, 1) * $factor[$i];

  }

  $mod = $checksum % 11;

  $verify_number = $verify_number_list[$mod];

  return $verify_number;

  }

  // 将15位身份证升级到18位

  function idcard_15to18($idcard){

  if (strlen($idcard) != 15){

  return false;

  }else{

  // 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($idcard, 12, 3), array('996', '997', '998', '999')) !== false){

  $idcard = substr($idcard, 0, 6) . '18'. substr($idcard, 6, 9);

  }else{

  $idcard = substr($idcard, 0, 6) . '19'. substr($idcard, 6, 9);

  }

  }

  $idcard = $idcard . idcard_verify_number($idcard);

  return $idcard;

  }

  // 18位身份证校验码有效性检查

  function idcard_checksum18($idcard){

  if (strlen($idcard) != 18){

  return false;

  }

  $idcard_base = substr($idcard, 0, 17);

  if(idcard_verify_number($idcard_base) != strtoupper(substr($idcard, 17, 1))){

  return false;

  }else{

  return true;

  }

  }

PHP实现身份证验证函数

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