隐藏手机/银行卡号的两种方法
1.sub_str()
$mobile = '15555666789';
echo substr($mobile, 0, 3) . "****". substr($mobile, -4);// 输出:155****6789
2.substr_replace()
$mobile = '15555666789';
echo substr_replace ($mobile,'****',3,4); //输出:155****6789
隐藏手机/银行卡号的两种方法
$mobile = '15555666789';
echo substr($mobile, 0, 3) . "****". substr($mobile, -4);// 输出:155****6789
$mobile = '15555666789';
echo substr_replace ($mobile,'****',3,4); //输出:155****6789