大约有 47,000 项符合查询结果（耗时：0.0362秒） [XML]
Validating IPv4 addresses with regexp
I've been trying to get an efficient regex for IPv4 validation, but without much luck. It seemed at one point I had had it with (25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?(\.|$)){4} , but it produces some strange results:
...
User recognition without cookies or local storage
I'm building an analytic tool and I can currently get the user's IP address, browser and operating system from their user agent.
...
PHP Regex to check date is in YYYY-MM-DD format
I'm trying to check that dates entered by end users are in the YYYY-MM-DD. Regex has never been my strong point, I keep getting a false return value for the preg_match() I have setup.
...
How to validate IP address in Python? [duplicate]
What's the best way to validate that an IP entered by the user is valid? It comes in as a string.
11 Answers
...
What is the best way to initialize a JavaScript Date to midnight?
What is the simplest way to obtain an instance of new Date() but set the time at midnight?
9 Answers
...
Find the PID of a process that uses a port on Windows
My service crash on startup with the classic:
7 Answers
7
...
How do you make an array of structs in C?
I'm trying to make an array of structs where each struct represents a celestial body.
7 Answers
...
How to validate an Email in PHP?
How can I validate the input value is a valid email address using php5. Now I am using this code
7 Answers
...
Why does ('0' ? 'a' : 'b') behave different than ('0' == true ? 'a' : 'b') [duplicate]
Why is the result of the following two statements different?
6 Answers
6
...
Set every cell in matrix to 0 if that row or column contains a 0
Given a NxN matrix with 0s and 1s. Set every row that contains a 0 to all 0 s and set every column that contains a 0 to all 0 s.
...