PHP implementation of the phone number in the middle of the four-bit asterisk (*) of the instance code

This article mainly introduces the PHP implementation of mobile phone number middle four with an asterisk (*) hidden custom function sharing, which is a more commonly used features, the need for friends can refer to the following

PHP shielded phone number middle four bits:

Method 1:
function Hidtel ($phone) {
$IsWhat = Preg_match ('/(0[0-9]{2,3}[\-]?[ 2-9][0-9]{6,7}[\-]? [0-9]?) /I ', $phone); Fixed telephone
if ($IsWhat = = 1) {
return Preg_replace ('/(0[0-9]{2,3}[\-]?[ 2-9]) [0-9]{3,4} ([0-9]{3}[\-]?[ 0-9]?) /I ', ' $1****$2 ', $phone);
}else{
return Preg_replace ('/(1[358]{1}[0-9]) [0-9]{4} ([0-9]{4})/I ', ' $1****$2 ', $phone);
}
}

Method 2:
$num = "13966778888"
$str = Substr_replace ($num, ' * * * ', 3,4);

Example:

$phonenum = "13966778888";
echo Hidtel ($phonenum);

Last output: 139****8888