How to hide the last two IP addresses in php and replace the number * in the middle of the mobile phone number

How to hide the last two IP addresses in php and replace the number * in the middle of the mobile phone number

Sometimes we need to hide the last two digits of the IP address in the php code, and replace the number in the middle of the mobile phone number with the "*" to keep the relevant data confidential. This article introduces several implementation methods, for more information, see. 1. hide the last two IP addresses. 2. php regular format IP address to hide the last digit. 3. use php to replace the number * in the middle of the mobile phone number. 4. use php to hide the last or last two IP addresses "; Echo preg_replace ($ reg2," $1. $2. *. * ", $ ip); // The output result is 127. 0. *. *?>