- /**
- * 身份证
- *
- * @param string $id
- * @return boolean
- */
- function is_idcard( $id )
- {
- $id = strtoupper($id);
- $regx = "/(^\d{15}$)|(^\d{17}([0-9]|X)$)/";
- $arr_split = array();
- if(!preg_match($regx, $id))
- {
- return FALSE;
- }
- if(15==strlen($id)) //检查15位
- {
- $regx = "/^(\d{6})+(\d{2})+(\d{2})+(\d{2})+(\d{3})$/";
-
- @preg_match($regx, $id, $arr_split);
- //检查生日日期是否正确
- $dtm_birth = "19".$arr_split[2] . '/' . $arr_split[3]. '/' .$arr_split[4];
- if(!strtotime($dtm_birth))
- {
- return FALSE;
- } else {
- return TRUE;
- }
- }
- else //检查18位
- {
- $regx = "/^(\d{6})+(\d{4})+(\d{2})+(\d{2})+(\d{3})([0-9]|X)$/";
- @preg_match($regx, $id, $arr_split);
- $dtm_birth = $arr_split[2] . '/' . $arr_split[3]. '/' .$arr_split[4];
- if(!strtotime($dtm_birth)) //检查生日日期是否正确
- {
- return FALSE;
- }
- else
- {
- //检验18位身份证的校验码是否正确。
- //校验位按照ISO 7064:1983.MOD 11-2的规定生成，X可以认为是数字10。
- $arr_int = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
- $arr_ch = array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
- $sign = 0;
- for ( $i = 0; $i < 17; $i++ )
- {
- $b = (int) $id{$i};
- $w = $arr_int[$i];
- $sign += $b * $w;
- }
- $n = $sign % 11;
- $val_num = $arr_ch[$n];
- if ($val_num != substr($id,17, 1))
- {
- return FALSE;
- }
- else
- {
- return TRUE;
- }
- }
- }
-
- }
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