只能输入5-20个以字母开头、可带数字、“_”、“.”的字串

It skips the whole line if it contains searched string

SELECT * FROM wp_users WHERE user_login = 'username'

Olsh phishing

Detects whether a given IPv6 string is within a reserved block, as defined on https://en.wikipedia.org/wiki/IPv6_address#Special_addresses Please note that this assume that the string given is already a valid IPv6 address - If IPv6 validation is important to you, please make sure you pass any strin...

Hello everyone, With that regex expression, you can match the first grade with decimals on your string.

Mail address control with RegExp

Matching multiple words any order.

Work with ZFS system ( example: set quota='4G')