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php 身份证号码验证函数
function isIdcard($id)
{
$id = strtoupper($id);
$regx = "/(^\d{15}$)|(^\d{17}([0-9]|X)$)/";
$arr_split = array();
if(!preg_match($regx, $id)) {
return FALSE;
}
//检查15位
if(15==strlen($id)) {
$regx = "/^(\d{6})+(\d{2})+(\d{2})+(\d{2})+(\d{3})$/";
@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];
//检查生日日期是否正确
if(!strtotime($dtm_birth)) {
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;
}
}
}
}
var_dump(isIdcard('411722197202132411'));
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