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<?php
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namespace Base\Tool;
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class IdCard
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{
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public static function isIdcard($id)
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{
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$id = strtoupper($id);
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$regx = "/(^\d{15}$)|(^\d{17}([0-9]|X)$)/";
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$arr_split = array();
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if (!preg_match($regx, $id)) {
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return false;
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}
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if (15 == strlen($id)) {
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$regx = "/^(\d{6})+(\d{2})+(\d{2})+(\d{2})+(\d{3})$/";
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@preg_match($regx, $id, $arr_split);
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//检查生日日期是否正确
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$dtm_birth = "19" . $arr_split[2] . '/' . $arr_split[3] . '/' . $arr_split[4];
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if (!strtotime($dtm_birth)) {
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return false;
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} else {
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return true;
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}
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} else {
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$regx = "/^(\d{6})+(\d{4})+(\d{2})+(\d{2})+(\d{3})([0-9]|X)$/";
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@preg_match($regx, $id, $arr_split);
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$dtm_birth = $arr_split[2] . '/' . $arr_split[3] . '/' . $arr_split[4];
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if (!strtotime($dtm_birth)) {
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return false;
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} else {
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//检验18位身份证的校验码是否正确。
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//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。
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$arr_int = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
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$arr_ch = array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
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$sign = 0;
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for ($i = 0; $i < 17; $i++) {
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$b = (int)$id{$i};
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$w = $arr_int[$i];
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$sign += $b * $w;
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}
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$n = $sign % 11;
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$val_num = $arr_ch[$n];
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if ($val_num != substr($id, 17, 1)) {
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return false;
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} else {
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return true;
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}
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}
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}
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}
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}
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